gmrulz4u Posted June 5, 2004 Report Share Posted June 5, 2004 OK...I've recently posted about a potential IAC problem that would cause my car not to start unless I gave it gas...and then it would run but the idle would be going crazy etc...eventually it would fix itself after a couple of re-starts... NOW, it hasn't done this since Monday...and it only did it two other times within the past couple weeks... Just a couple of minutes ago something dawned on me...each of the three times the car did this, I had checked the OBD Codes just prior... Each time I would get home, pull into my drive-way, get out my paperclip to check the codes, read the codes, take the paperclip out...go inside for a few hours...come back out, and then "it" would happen...the engine wouldn't start!!?? It's almost like the ECM is losing it's knowledge of the IAC or something...but somehow checking the codes is the only thing that's making this happen? Are these THREE times just a coincidence(I don't think so), or is my ECM really starting to do some crazy things...? THANKS AGAIN! Quote Link to comment Share on other sites More sharing options...
Guest Anonymous Posted June 6, 2004 Report Share Posted June 6, 2004 What year is your car again? Quote Link to comment Share on other sites More sharing options...
gmrulz4u Posted June 6, 2004 Author Report Share Posted June 6, 2004 Sorry, 1989 Cutlass w/2.8L Quote Link to comment Share on other sites More sharing options...
91oldscutlass Posted June 6, 2004 Report Share Posted June 6, 2004 Thats kinda part of the problem I had. The difference is my computer had no codes. The problem ended up being the injectors. Mine is a 91 Cutlass with a 3.1. Quote Link to comment Share on other sites More sharing options...
gmrulz4u Posted June 6, 2004 Author Report Share Posted June 6, 2004 Hmmm...that's strange...how in the hell could that translate into an injector problem???!! I don't really see the connection... Quote Link to comment Share on other sites More sharing options...
Guest Anonymous Posted June 6, 2004 Report Share Posted June 6, 2004 Have you ever put a computer in it? Quote Link to comment Share on other sites More sharing options...
gmrulz4u Posted June 6, 2004 Author Report Share Posted June 6, 2004 Nope...never... I got a reply from another Message Board and this is what they said: The order that you do things when you check your trouble codes may explain what's happening... If you're grounding the ALDL before you turn the key on, you're entering a diagnostic mode where the ECM commands the IAC to seat the IAC pintle for purposes of checking the minimum idle speed. The correct procedure for retrieving codes is to turn the ignition on, then ground the ALDL. I don't know about this though...kind of sounds like BS to me...because I've always, for the past 4 years, checked my codes by FIRST grounding the A&B of the ALDL...and it never happened back then... Quote Link to comment Share on other sites More sharing options...
god910 Posted June 6, 2004 Report Share Posted June 6, 2004 Dunno, I always have the k/o when I connect the high tech "ALDL trouble code retrieving super low ohm, high output Paper Clip" Quote Link to comment Share on other sites More sharing options...
Guest Anonymous Posted June 6, 2004 Report Share Posted June 6, 2004 The proper way is to turn the ignition on first though. Why don't you get a computer and see what it does? Might fix all your problems. I'm sure someone on here has one or can get you one for a decent price. Quote Link to comment Share on other sites More sharing options...
Dan94Z34 Posted June 6, 2004 Report Share Posted June 6, 2004 We had a simular problem with my moms 92 Grand Prix. It started, then we drive it accross town, and it wouldn't start again. It ended up being the computer went south. It was gounding out the injectors causing them not to palse. Take an Ohm meter and check your injectors. Pull one of the injector wires off, from one of the three that are easily accesable. Use the Ohm meter on the injector its self and the wiring connector. The injector should be in the 12ohm range. If you get OL on the wiring harness, then it is being gound out. Also check your fuel pressure, and check to see if you have any spark. Quote Link to comment Share on other sites More sharing options...
gmrulz4u Posted June 6, 2004 Author Report Share Posted June 6, 2004 Pull one of the injector wires off, from one of the three that are easily accesable. But don't I have to remove the Plenum to get at the injectors(on a 2.8)? Quote Link to comment Share on other sites More sharing options...
Guest Anonymous Posted June 6, 2004 Report Share Posted June 6, 2004 Pull one of the injector wires off, from one of the three that are easily accesable. But don't I have to remove the Plenum to get at the injectors(on a 2.8)? Look on each end of the plenum. You can see at least one injector on each end. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.