UA-65274002-1 Jump to content

Car Hesitating/Dying


White92Cutlass

Recommended Posts

Need some help from the Gurus here. 1992 Cutlass Supreme 3.1, automatic stumbles on acceleration for a second and dies at times when accelerating from a stop (within a few feet). Shop threw parts at it, issue not fixed. Shop put new fuel pump, new fuel filter, 2 new coils, new coil pigtail, 3 new spark plugs, new throttle position sensor, new PCV and hose, and new crankshaft position sensor. Second shop said that bad fuel injectors was the problem and they guaranteed that that would fix it (for $1,600). I took it from the shop and replaced all 6 fuel injectors myself along with the upper intake gaskets for $80. However, issue is still there. Only code it is pulling is 45- left bank oxygen sensor. I unpugged the upstream oxygen sensor harness- it still dies. Also has irratic idle at times (up or down 500 rpms). Any help would be greatly appreciated- thanks!

Link to post
Share on other sites

What is the fuel pressure just before the engine stalls?

What is the cranking compression pressure of all six?

Connect a scan tool, look at the data stream.  Short- and long-term fuel trims, engine coolant temperature, O2 sensor readings and cross-counts,  EGR operation, MAP sensor values, and all the other sensors/actuators.

 

 

Have you followed the diagnostic procedure for the Code 45, or are we just ignoring it?

Edited by Schurkey
Link to post
Share on other sites

This is very odd........an OBDI vehicle does not make use of a *left bank* oxygen sensor..... there is only one in the system & that is just before the cat.

 

You're also misreading the code 45....that does not suggest that the o2 sensor is at fault....that code is telling one that there is a rich situation where the fuel mixture is concerned.

Removing the harness from the o2 will not correct that issue.

Did either of those *shops* test the FPR for proper function?

Edited by 55trucker
Link to post
Share on other sites
This is very odd........an OBDI vehicle does not make use of a *left bank* oxygen sensor..... there is only one in the system & that is just before the cat.
 
You're also misreading the code 45....that does not suggest that the o2 sensor is at fault....that code is telling one that there is a rich situation where the fuel mixture is concerned.
Removing the harness from the o2 will not correct that issue.
Did either of those *shops* test the FPR for proper function?



You know what, for some reason I was thinking he said the fuel pressure regulator was replaced but we reading it doesn’t seem like that was the case. This almost sounds exactly like what my monte Carlo was doing when the fuel pressure regulator went bad.
Link to post
Share on other sites
  • 2 weeks later...

Tested the fuel pressure regulator. No sign of fuel when removing the vacuum hose. 39 with key on and not started, 36 with engine idling. 44 when vacuum hose is pulled off when it is running. Are these numbers within required specifications? Thanks!

Link to post
Share on other sites

Those all sound good, no rich condition there, with the engine running one pulls off the vacuum line to the FPR & the pressure should rise, the vacuum to the diaphragm keeps the pressure regulated to what is needed in a high vacuum scenario (idle/no throttle).

Soooo........the next time this situation occurs (if at home) immediately pull all the plugs, look for signs of flooding in any of them, if all look dry & somewhat normal (tan colour, fluffy brown deposits) that would suggest they are all firing normally & the engine is not running rich.

 

Link to post
Share on other sites

White smoke coming from exhaust- so much that I thought it had blown a head gasket. Car does not get hot. Exhaust smells strongly of gas and lots of condensation dripping out of exhaust pipes.

Link to post
Share on other sites
1 hour ago, 55trucker said:

 pull all the plugs, look for signs of flooding in any of them, if all look dry & somewhat normal (tan colour, fluffy brown deposits) that would suggest they are all firing normally & the engine is not running rich.

 

"Normal" hasn't looked like that around here for decades.  Around here, unleaded gasoline burns so clean it takes thousands and thousands of miles to put color on the plugs.  I'd expect them to look virgin-white (at least the three new ones.)

What kind of shop puts three spark plugs into a six-cylinder car?  Were they the rear-bank plugs and someone already replaced the fronts?

 

PUT A SCAN TOOL ON THIS CAR.  Look at the data stream.  And does Code 45 come back when it's cleared?  Did you ever bother to follow the diagnostic procedure for Code 45?

Link to post
Share on other sites
On 11/16/2019 at 5:49 PM, Schurkey said:

"Normal" hasn't looked like that around here for decades.  Around here, unleaded gasoline burns so clean it takes thousands and thousands of miles to put color on the plugs.  I'd expect them to look virgin-white (at least the three new ones.)

What kind of shop puts three spark plugs into a six-cylinder car?  Were they the rear-bank plugs and someone already replaced the fronts?

 

PUT A SCAN TOOL ON THIS CAR.  Look at the data stream.  And does Code 45 come back when it's cleared?  Did you ever bother to follow the diagnostic procedure for Code 45?

I am not a mechanic. I sold the car to my step-son and it quit on him in Oklahoma. A friend and I trailered it back to Missouri because the shop guaranteed that fuel injectors would fix the issue but they wanted a fortune to do it. The car was on a scan tool at both shops in Oklahoma. Only code it ever pulled was oxygen sensor. The only scan tool I own doubles as a paper clip. Again, I am not a mechanic, so I haven't got a clue what the "diagnostic procedure is for code 45". Taking the car to a local shop so they can follow the diagnostic procedure for code 45. Thanks everyone for the replies.

Link to post
Share on other sites

I reset the codes and took it for a test drive. After an hour of driving, the check engine light came on. I pulled out the trusty paperclip and read the codes. It is now pulling codes 33, 35, and 45. Any idea what the problem may be going by these codes? Just trying to save my step-son some money by avoiding shop charges.

Link to post
Share on other sites

Code 33 is Map sensor circuit

signal voltage is high.. vacuum is low, throttle plate is closed, situation lasts for more than 5 seconds...engine misfire or low idle rpm can set code 33

Code 35 is IAC circuit

will set when the idle rpm is above or below the specified by 200 rpm for more than 50 secs

Code 45 is O2 sensor (rich condition)

 

that rich condition is the major cause of the 33 & the 35, find the source of the rich condition (as previously suggested) & the 33 & 35 will self correct.

Edited by 55trucker
Link to post
Share on other sites

An elderly O2 sensor can set a false "rich" code.

I fought with that for two years, on and off, on my '88 K1500.  Found nothing wrong...until, in desperation, I ripped out the O2 sensor and stuffed a new one in place.  Instantly fixed the "Code 45 only at highway speed" problem I'd been having..

Link to post
Share on other sites
  • 1 month later...
White92Cutlass

Shop diagnosed the problem as a bad computer. I have two Cutlass computers from previous parts cars. One is from a 1991 Cutlass Supreme Convertible (3.1, auto) and one is from a 1993 Cutlass Supreme Convertible (3.1, auto).

Is the 1991 computer the only one that would work in the '92 Cutlass (which is also a 3.1, auto)? Heard that '93's have a different trans than 92's and ecms can't be interchanged. Also, I need to switch some chip (PROM?) that is in the computers? What is the procedure for doing that? Thanks!

Link to post
Share on other sites

use this list to find your ECM/chip

locate your engine/platform in the left side menu, locate your year, then the corresponding ECM number...use the the ECM number listed in the lower main menu to find the memcal/PROM that was used with that particular ECM/ vehicle application

This page lists the several generations of GM engine, powertrain, and vehicle control modules which are characterized by having a single EPROM or EEPROM containing both the vehicle calibration and program code.

This page does not cover the older C3 generation of ECMs. It also does not cover any flash based control modules. Items in italics are unverified.

An incomplete list of ECMs/PCMs/VCMs:

   


An incomplete list of Australian ECMs/PCMs/VCMs:

   

 

Car ECM selection by model year and engine type:

  1986 1987 1988 1989 1990 1991 1992 1993 1994 1995
1.6 OHC L4 TBI “6” L73 (LeMans)   1227303 1227303 1227303 1227303 1227303 1227303  
1.9 L4 TBI “9” (Saturn)    
1.9 L4 PFI “7” (Saturn)    
2.0 OHC L4 TBI “K” LT2 (LeMans)   1227303 1227303 1227303  
2.0 L4 TBI “P” LQ5 1227165  
2.0 L4 TBI “1” LL8   1227730 1227730
1228321
1228321  
2.0 OHC L4 TBI “K” LT2   1227748 1227748 1227748 1227748 1227748  
2.0 OHC L4 PFI turbo “M” LT3   1227749 1227749 1227749 1227749  
2.0 OHC L4 PFI “H” LE4   16159282 16159282 16159282
16196393
 
  1986 1987 1988 1989 1990 1991 1992 1993 1994 1995
2.2 L4 TBI “G” LM3   1227748 1227748  
2.2 L4 PFI “4” LN2   16134847 16134847 16191947 16191947
2.3 DOHC L4 PFI “D” LD2
(exc. “W” body)
  1227749 1227749 1228707 1228707 1228707 16156450 16173278 16183978 16183978
16191947
16193700
16196285
2.3 DOHC L4 PFI “D” LD2
(“W” body)
  1228708 1228708  
2.3 DOHC L4 PFI “A” LG0
(exc. “W” body)
  1228707 1228707 1228707 16156450 16156450
16173278
16191947  
2.3 DOHC L4 PFI “A” LG0
(“W” body)
  1228708  
2.3 DOHC L4 PFI “3” L40   16156450 16173278 16191947  
2.5 L4 TBI “R” LR8
(exc. “W” body)
  1227748 1227748 1227748 1227748 1227748 1227748  
2.5 L4 TBI “R” LR8
(“W” body)
  1227727 1227727 1227727  
  1986 1987 1988 1989 1990 1991 1992 1993 1994 1995
2.5 L4 TBI “U” L68   1227748 1227748 1227748 1227748 1227748  
2.8 V6 PFI “W” LB6
(exc. “W” body)
  1227730 1227730 1227730  
2.8 V6 PFI “W” LB6
(“W” body)
  1227727 1227727  
3.1 V6 PFI “T” LH0
(exc. “W” body)
  1227730 1227730 1227730 1227730 1227730 1227730  
3.1 V6 PFI “T” LH0
(“F” body)
  16196404 16196404 16196404  
3.1 V6 PFI “T” LH0
(“W” body)
  1227727 1227727 1227727 1227727 1227727
16149396
 
3.1 V6 SFI “T” L82   16184164  
3.1 V6 SFI “M” L82   16196387 16196387
3.1 V6 PFI turbo “V” LG5   1227727 1227727  
  1986 1987 1988 1989 1990 1991 1992 1993 1994 1995
3.3 V6 PFI “N” LG7   1228706 1228706 1228706 1228706 1228706  
3.4 DOHC V6 PFI “X” LQ1   16149396 16149396 16149396  
3.4 DOHC V6 SFI “X” LQ1   16196401 16196401
3.8 V6 SFI “C” LN3   1228253 1228253 1228253 1228253  
3.8 V6 SFI “L” L27
(exc. “W” body)
  16141470 16141470 16141470 16183247 16183247
3.8 V6 SFI “L” L27
(“W” body)
  16132792 16132792 16132792  
3.8 V6 SFI “K” L36   16183247
3.8 V6 SFI supercharged “1” L67   16141470 16141470 16141470 16183247 16183247
5.0 V8 TPI “F” LB9 1227165 1227165 1227165 1227165 1227730 1227730 1227730  
  1986 1987 1988 1989 1990 1991 1992 1993 1994 1995
5.7 V8 TPI “8” L98
(“F” body)
  1227165 1227165 1227165 1227730 1227730 1227730  
5.7 V8 TPI “8” L98
(“Y” body)
1227165 1227165 1227165 1227165 1227727 1227727  
5.7 V8 TPI “P” LT1   16159278 16159278  
5.7 DOHC V8 SFI “J” LT5   1228331 1228331 16163993 16163993 16163993 16163993

 

 

Truck ECM selection by model year and engine type:

  1987 1988 1989 1990 1991 1992 1993 1994 1995
2.2 L4 PFI “4” LN2   16199982  
2.5 L4 TBI “E” LN8 1227165 1227165 1227165 1227165 1227165  
2.5 L4 TBI “A” L38   1227165 16156647 16156647  
3.8 V6 SFI “L” L27   16141470 16141470 16183247 16183247
4.3 V6 TBI “Z” LB4  
4.3 V6 CPI “W” L35   16156647   16156647  
4.3 V6 PFI turbo “Z” LB4   1227749 1227749 1227749  
5.0 V8 TBI “H” L03  
5.7 V8 TBI “K” L05  
  1987 1988 1989 1990 1991 1992 1993 1994 1995
7.4 V8 TBI “N” L19  

 

 


1227165
16198259

Schematic

Application: 1986 2.0 L4 TBI “P” LQ5 w/ MT
1986-89 5.0 V8 TPI “F” LB9
1986-89 5.7 V8 TPI “8” L98
1987-91 truck 2.5 L4 TBI “E” LN8
1991 truck 2.5 L4 TBI “A” L38
MEMCAL IDs: P”: CRY, CRZ, …
F”: AUM, ACXT, AKFM, AKFR, …
8”: BUA, AANK, AANL, APYP, APYU, AUJM, …
E”: ADHF, AMJW, ASWY, AXAA, …
A”: AUXH, …
EPROM type: 27C128



1227277

Schematic

Description: 1227808 w/o O2 input
Application: Australian L4 TBI
EPROM type: 27C128



1227303

Schematic

Description: 1227752 w/ one missing quad driver
Application: 1988-93 1.6 OHC L4 TBI “6” L73 (LeMans)
1988-90 2.0 OHC L4 TBI “K” LT2 (LeMans)
MEMCAL IDs: 6”: ACXP, ACXR, AXCF, ASFM, …
K”: ANAB, …
EPROM type: 27C128



1227727
16197128
16198260

Schematic

More info

Description: 1227730 in underhood case
Application: 1990-92 2.5 L4 TBI “R” LR8 (“W” body)
1988-89 2.8 V6 PFI “W” LB6 (“W” body)
1989-93 3.1 V6 PFI “T” LH0 (“W” body)
1989-90 3.1 V6 PFI turbo “V” LG5
1990-91 5.7 V8 TPI “8” L98 (“Y” body)
MEMCAL IDs: R”: APTW, …
W”: AMAS, APWM, ATRA, …
T”: ARCX, ARZW, ATSN, ATSP, AUMY, …
V”: ASAN, ASMF, ATMJ, ATMK, AUAD, AUAF, AUFR, AZRC
8”: ANHT, ARFP, …
EPROM type: 27C128 or 27C256



1227730
16196344
16198262

Schematic

More info

Application: 1987 2.0 L4 TBI “1” LL8
1988 2.0 L4 TBI “1” LL8 (early)
1987-89 2.8 V6 PFI “W” LB6 (exc. “W” body)
1988-94 3.1 V6 PFI “T” LH0 (exc. “W” body)
1990-92 5.0 V8 TPI “F” LB9
1990-92 5.7 V8 TPI “8” L98 (“F” body)
MEMCAL IDs: 1”: FML, AAST, ADDT, ADDU, …
W”: AAWW, AAXM, ADBT, ADBU, ADCM, ADDB, ADPK, ADPL, ADPP, ADRJ, ADRR, ADRU, ADRX, ADRY, ADRZ, ADSB, ALZN, ALZT, AMAP, ANKK, ANWA, APWD, ARBX, ARCN, ARDC, ARXU, ARYH, ASMJ, ASMK, ASMW, ASMX, ASNA, ASNB, ASWD, ATZD, ATZF, …
T”: ARUT, AUAR, AZTY, …
F”: …
8”: AUJP, …
EPROM type: 27C128 or 27C256



1227748

Schematic

Description: Two edge card connectors, uses EPROM instead of MEMCAL
Application: 1987-91 2.0 OHC L4 TBI “K” LT2
1990-91 2.2 L4 TBI “G” LM3
1987-92 2.5 L4 TBI “R” LR8 (exc. “W” body)
1987-91 2.5 L4 TBI “U” L68
MEMPAK IDs: K”: ABLT, ACXK, ALWK, ATWA, …
G”: ATLA, ATXC, ATXD, AUJU, …
R”: ABKB, ACMA, ACMB, ACMF, ACMH, ADSJ, ADSK, ALWM, ANAM, ATBS, ATBM, …
U”: ABKH, ACMC, ANML, ASLA, ATBU, …
EPROM type: 27C128



1227749
16198263

More info

Schematic

Description: 1227730 w/ one missing quad driver, w/ additional injector driver FET
Application: 1987-90 2.0 OHC L4 PFI turbo “M” LT3
1987-88 2.3 DOHC L4 PFI “D” LD2
1991-93 truck 4.3 V6 PFI turbo “Z” LB4
MEMCAL IDs: M”: AFDZ, ALBK, AMUW, AUWS, …
D”: AMDB, AMDD, AMDF, ARPZ, …
Z”: AWXJ, AXXA, AYBM, AYBN, BBZA, BBZB, DOAC
EPROM type: 27C128 or 27C256



1227752

Schematic

Description: 1227165 in short case
Application: 1987 1.5 L4 PFI turbo “9” (Isuzu)
1988-89 1.5 L4 PFI turbo “9” (Isuzu)
1989 1.6 DOHC L4 PFI “5” (Isuzu)
MEMCAL IDs: 9”: ARB
5”: …
EPROM type: 27C128



1227808

Schematic

Description: 1227165 w/o 8192 baud ALDL
Application: Australian
MEMCAL IDs: ASBX, …
EPROM type: 27C128



1228253
16198264

More info

Schematic

Description: Six cylinder sequential injection
Application: 1988-91 3.8 V6 SFI “C” LN3
MEMCAL IDs: AJRZ, AJSA, ANBF, ATXY, …
EPROM type: 27C256



1228321

Schematic

Description: Two edge card connectors, uses EPROM instead of MEMCAL
Application: 1988 2.0 L4 TBI “1” LL8 (late)
1989 2.0 L4 TBI “1” LL8
MEMPAK IDs: ABKL, AKZA, ARRM, ARRN, ARRP, …
EPROM type: 27C128



1228331

Application: 1990-91 5.7 DOHC V8 SFI “J” LT5
1991 Vauxhall Lotus Carlton 3.6 Twin Turbo
MEMCAL IDs: J”: ANHX, AUAH, ARZR, AXFK, AYBK, BFXB
Lotus: AXSH, …
EPROM type: 27C256



1228706
16198266

Schematic

Application: 1989-93 3.3 V6 PFI “N” LG7
MEMCAL IDs: ALCA, ANWM, ANWN, ANWR, ASJU, ASJX, AXUP, …
EPROM type: 27C256



1228707
16198267

Application: 1989-91 2.3 DOHC L4 PFI “D” LD2 (exc. “W” body)
1989-91 2.3 DOHC L4 PFI “A” LG0 (exc. “W” body)
MEMCAL IDs: D”: ANMP, ANZF, ARHM, ASDD, ASDF, …
A”: …
EPROM type: 27C256



1228708

Application: 1990-91 2.3 DOHC L4 PFI “D” LD2 (“W” body)
1990 2.3 DOHC L4 PFI “A” LG0 (“W” body)
MEMCAL IDs: D”: ANLP, …
A”: …
EPROM type: 27C256



16132792

Application: 1990-92 3.8 V6 SFI “L” L27 (“W” body)
MEMCAL IDs: AZKT, …
EPROM type: 27C256



16134847

Application: 1992-93 2.2 L4 PFI “4” LN2
CAL IDs: BAYK, …
ROM type: EEPROM



16141470

Application: 1991-93 3.8 V6 SFI “L” L27 (exc. “W” body)
1991-93 3.8 V6 SFI supercharged “1” L67
1992-93 truck 3.8 V6 SFI “L” L27
MEMCAL IDs: L”: …
1”: …
EPROM type: ????



16146299

Description: ECM
Application: Australian
EPROM type:  



16147060

Application: 1991-93 truck 5.7 V8 TBI “K” L05
MEMCAL IDs: K”: BAJP, …
EPROM type: 27C256



16149396

Schematic

Description: 1227727 w/ additional SRAM
Application: 1993-94 3.1 V6 PFI “T” LH0 (“W” body)
1991-93 3.4 DOHC V6 PFI “X” LQ1
MEMCAL IDs: T”: BDJS, …
X”: AYSZ, BBUK, BCDT, BCFA, …
EPROM type: 27C256



16153597

Description: Dual injector driver FETs, uses 1227752 case
Application: 1990 1.6 SOHC L4 PFI “6” (Geo & Isuzu)
1991 1.6 SOHC L4 PFI “6” (Geo & Isuzu)
1992-93 1.6 SOHC L4 PFI “6” (Geo & Isuzu)
1990-92 1.6 DOHC L4 PFI “5” (Geo & Isuzu)
1992-93 1.8 DOHC L4 PFI “8” (Geo & Isuzu)
1991-92 1.6 DOHC L4 PFI turbo “4” (Isuzu)
CAL IDs: 6”: AUUC, …
ROM type: EEPROM



16156647

Application: 1992-93 truck 2.5 L4 TBI “A” L38
1992 truck 4.3 V6 CPI “W” L35
1994 truck 4.3 V6 CPI “W” L35 w/ MT
MEMCAL IDs: A”: …
W”: BAWP, BCBH, …
EPROM type: 27C256



16139060
16159278

Application: 1993 5.7 V8 TPI “P” LT1 (“F” body)
1992-93 5.7 V8 TPI “P” LT1 (“Y” body)
MEMCAL IDs: BAFL, BDBK, BDZP, …
EPROM type: 27C256



16159282

Application: 1992-93 2.0 OHC L4 PFI “H” LE4
1994 2.0 OHC L4 PFI “H” LE4 w/ MT
MEMPAK IDs:
EPROM type:



16163993
16196394

Application: 1992-95 5.7 DOHC V8 SFI “J” LT5
MEMCAL IDs: AYWT, …
EPROM type: 27C256



16168625

Application: 1993-94 truck 5.7 V8 TBI “K” w/ 4L60E
MEMCAL IDs: BHMX, …
EPROM type:  



16176424

Description: Two plugs, case like 1227165, PCM
Application: 1993+ Australian V6 w/AT (Holden Commodore VR)
1993+ Australian V8 w/AT (Holden Commodore VR & VS)
MEMCAL IDs: BFFK, BFPL, BKCZ, BLCC, BMZA, BMZC, …
EPROM type: 27C512



16183082

Description: 1227808 w/ 8192 baud ALDL
Application: 1993+ Australian V6 w/MT (Holden Commodore VR)
1993+ Australian V8 w/MT (Holden Commodore VR & VS)
MEMCAL IDs: BJKS, BLCD, BLCF, BLJX, BMZL, …
EPROM type: 27C256



16183247

Application: 1994-95 3.8 V6 SFI “L” L27
1995 3.8 V6 SFI “K” L36
1994-95 3.8 V6 SFI supercharged “1” L67
1994-95 truck 3.8 V6 SFI “L” L27
MEMCAL IDs: L”: BMYU, …
1”: …
K”: …
EPROM type: 27C512



16186695

Application: 1993 truck 5.7
EPROM type:  



16191947

Application: 1994-95 2.2 L4 PFI “4” LN2
1994 2.3 DOHC L4 PFI “A” LG0
1994 2.3 DOHC L4 PFI “3” L40
1995 2.3 DOHC L4 PFI “D” LD2
MEMCAL IDs: 4”: BJCA, …
A”: …
3”: …
D”: …
EPROM type: 27C512



16195699

Description: 16176424 w/ RFI screened plugs
Application: 1993+ Australian V6 w/AT (Holden Commodore VR)
1993+ Australian V8 w/AT (Holden Commodore VR & VS)
MEMCAL IDs: BKDA, BWCS, BWFU, …
EPROM type: 27C512



16196393

Application: 1994 2.0 OHC L4 PFI “H” LE4 w/ AT
MEMPAK IDs: BJCF
EPROM type:



16196395

Application: 1994 truck 4.3 V8 CPI “?” L35
1994 truck 5.7 V8 TBI “?” L05
1994 truck 7.4 V8 TBI “?” L19
MEMCAL IDs: BHDF, BHRJ, BJDR, …
EPROM type: 27C512



16196401
16173300

Application: 1994-95 3.4 DOHC V6 PFI “X” LQ1
MEMCAL IDs: BCFD, BFRS, BHZW, BHLJ, BKLK, BKLL, BPCJ, BPCK, BSBH
EPROM type: 27C256



16196404

Application: 1990-92 3.1 V6 PFI “T” LH0
MEMCAL IDs: BMCD
EPROM type: ????



16197427

Application: 1995 truck 5.7 V8 TBI “K” L05
MEMCAL IDs: BJYA, BJYM, …
EPROM type: 27C512



16199728
16210672

Description: Three plugs, no resistor packs, PCM
Application: 1995+ Australian V6 w/AT (Holden Commodore VS)
MEMPAK IDs: BRHP, BSTK, BWPJ, …
EPROM type: 27C010



16199982

Application: 1994 truck 2.2 L4 PFI “4” LN2
EPROM type:  



16206305

Description: Like 16183082
Application: Australian
EPROM type:  



16208252

Description: Like 16176424
Application: 1993+ Australian LP-Gas V6 (Holden Commodore VR)
MEMCAL IDs: BLYN, …
EPROM type: 27C512



16208257

Description: 16199728 w/ RFI screened plugs
Application: 1995+ Australian V6 w/AT (Holden Commodore VS)
MEMPAK IDs: BSTH, …
EPROM type: 27C010



16234531

Description: PCM
Application: Australian
EPROM type:  

 


  • Like 2
Link to post
Share on other sites

what is it that you are having problems understanding?

in the OP's case he has a 1992 vehicle,

the car platform is W (W body) the engine is T code (LH0)

the ECM used in that platform/model/engine/year is 1227727

there are 5 memcal's used in that ECM casing.............. ARCX, ARZW, ATSN, ATSP, AUMY

 

his original ECM prom chip will match one of those listed

 

 

 

Edited by 55trucker
Link to post
Share on other sites
White92Cutlass
On 1/5/2020 at 9:13 PM, 55trucker said:

what is it that you are having problems understanding?

in the OP's case he has a 1992 vehicle,

the car platform is W (W body) the engine is T code (LH0)

the ECM used in that platform/model/engine/year is 1227727

there are 5 memcal's used in that ECM casing.............. ARCX, ARZW, ATSN, ATSP, AUMY

 

his original ECM prom chip will match one of those listed

 

 

 

I took the ecm out of the 1993- the number on it was not 1127727 (that number was not on it anywhere) so I'm guessing that one won't work. I found the ecm from the 1991 Cutlass and all numbers on the outer housing are completely unreadable. The PROM has the exact same numbers as the 1992 PROM (Delco, 9733, 9733), but the little blue plastic casing that holds the PROMs in doesn't match. 1992 PROM casing says Delco BAUH 6334 and the 1991 Prom casing says AUSJ 2569. Will the 91 ecm still work in the 92 if I put the 92 PROM in it?

Thanks!

Link to post
Share on other sites

BAUH should be '92 T code W body.....I believe that AUSJ is the prom for T code W body 91, not sure if that is for a manual or auto trans.

you need to know what ECM you have, both of those proms will work but the ECM needs to be the 1227727.

I take it that what you do have are the weatherproof casings?

 

Link to post
Share on other sites
White92Cutlass
51 minutes ago, 55trucker said:

BAUH should be '92 T code W body.....I believe that AUSJ is the prom for T code W body 91, not sure if that is for a manual or auto trans.

you need to know what ECM you have, both of those proms will work but the ECM needs to be the 1227727.

I take it that what you do have are the weatherproof casings?

 

I bought the '91 with a blown head gasket and I took the ecm out of it myself about 10 years ago. It was an automatic car. My understanding is that all of the 91's had the 1227727 ecm so it should be interchangeable.

I just put the 92 PROM in the 91 ecm and installed it in the 92 Cutlass. It started right up but idled much worse than with the old ecm and it still smoked like a freight train. I let it run and it died after about 5 minutes. Was hard to start again, but got it going and took it down the road. Died at a stop sign a half mile down the road and the battery went dead trying to start it. Got a jump start and drove it home. Died at my driveway and would not start again. Put jumper cables on it and tried off and on to get it to start for an hour but was unsuccessful.

Any idea what the issue is? Thanks.

Link to post
Share on other sites

Is the engine running long enough to set either a code 51 or code 55?...ECM prom error & faulty ECM.

A hard start situation can be caused by a CTS issue, if the ECM is seeing a too cold signal (out of range of that of the ambient temp) from the CTS that will make starting difficult and the engine will die.

Link to post
Share on other sites
White92Cutlass

No check engine light during the brief time it was running. What is CTS? Never had a hard start with the old ecm- always started immediately and always started back up immediately when it died.

Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...