UA-65274002-1

Jump to content


Photo
- - - - -

Hard to start when car is warm


  • Please log in to reply
46 replies to this topic

#1 W30olds

W30olds

    Advanced Member

  • Members
  • PipPipPip
  • 347 posts
  • LocationBraselton, GA

Posted 21 April 2018 - 05:02 PM

Hey guys. Got a issue and can't seem to figure out what it might be. So my 95 GP 3.1L has been acting up some. When it's cold it starts good, but after it gets up to temp and I shut it off and try to restart it say after going into a store it's hard to get cranked again. So the battery is new and just had it load tested. The alternator I'd working as just had it tested. The starter is fairly new. I replaced it last summer with a new GM starter. Once the cars cranked and running it's fine. Runs fine. This just started happening within the last week. Any ideas what it could be?? Before having it looked at wanted to check to see what some of you GP gurus might think. Thanks! Andy Sent from my SM-G900V using Tapatalk
1995 GP SE, 2006 GTO

#2 Imp558

Imp558

    Proud TransCelestialsexual

  • Contributing Member
  • 5,305 posts
  • LocationErie PA.

Posted 21 April 2018 - 05:24 PM

So the engine will physically not turn over or it turns over and won't start?

Banner2.png

"If everything seems under control, you're not going fast enough"  - Mario Andretti

 

1996 Buick Regal L67/4T65E-HD swapped - 1995 Buick Regal GS - 1980 Dodge Sno-Commander - 1968 Empi Imp on '67 Pan - 2001 Chevrolet Express 3500

 

Her Stuff: 1996 SSEi - 2001 Monte Carlo SS


#3 W30olds

W30olds

    Advanced Member

  • Members
  • PipPipPip
  • 347 posts
  • LocationBraselton, GA

Posted 21 April 2018 - 05:29 PM

So the engine will physically not turn over or it turns over and won't start?

Today it wouldn't physically turn over when I turned the key. It started fine this morning. Wife and i drove to home depot. Went in did a few things and came back out to leave and boom wouldn't turn over or start. After several attempts it finally started but acted like it had a bad battery. Sent from my SM-G900V using Tapatalk
1995 GP SE, 2006 GTO

#4 Imp558

Imp558

    Proud TransCelestialsexual

  • Contributing Member
  • 5,305 posts
  • LocationErie PA.

Posted 21 April 2018 - 05:38 PM

Get a large ratchet and socket ready. When it does it verify the engine isn't seizing by turning it over with the crank pulley bolt. Then have someone turn the engine over while you hold a voltmeter on the battery, then clean all the large grounds. If the ground from the engine to frame or battery is poopy that'll do it.

Banner2.png

"If everything seems under control, you're not going fast enough"  - Mario Andretti

 

1996 Buick Regal L67/4T65E-HD swapped - 1995 Buick Regal GS - 1980 Dodge Sno-Commander - 1968 Empi Imp on '67 Pan - 2001 Chevrolet Express 3500

 

Her Stuff: 1996 SSEi - 2001 Monte Carlo SS


#5 W30olds

W30olds

    Advanced Member

  • Members
  • PipPipPip
  • 347 posts
  • LocationBraselton, GA

Posted 21 April 2018 - 05:49 PM

Get a large ratchet and socket ready. When it does it verify the engine isn't seizing by turning it over with the crank pulley bolt. Then have someone turn the engine over while you hold a voltmeter on the battery, then clean all the large grounds. If the ground from the engine to frame or battery is poopy that'll do it.

Ok thanks! Car ran perfectly fine all morning and boom we parked and went into home depot for a bit and then it was dead in the water. No starter, no turning, nothing. When it finally started to crank it acted like the battery was dead. Once running drove to autozone and the guy tested the alternator. Shut it off and he load tested the battery and said it was showing 100% and had 12.5V result on the load. Then when I tried to start.the car it started, but again acted like a dying battery. Sent from my SM-G900V using Tapatalk
1995 GP SE, 2006 GTO

#6 W30olds

W30olds

    Advanced Member

  • Members
  • PipPipPip
  • 347 posts
  • LocationBraselton, GA

Posted 21 April 2018 - 06:12 PM

Could it be the starter? I know it's fairly new, but seems like when it's hot it stumbles to turn over. I'll go check the wires in a bit Sent from my SM-G900V using Tapatalk
1995 GP SE, 2006 GTO

#7 Imp558

Imp558

    Proud TransCelestialsexual

  • Contributing Member
  • 5,305 posts
  • LocationErie PA.

Posted 21 April 2018 - 06:38 PM

It could be anything, have to start with what's not new when you troubleshoot.

Banner2.png

"If everything seems under control, you're not going fast enough"  - Mario Andretti

 

1996 Buick Regal L67/4T65E-HD swapped - 1995 Buick Regal GS - 1980 Dodge Sno-Commander - 1968 Empi Imp on '67 Pan - 2001 Chevrolet Express 3500

 

Her Stuff: 1996 SSEi - 2001 Monte Carlo SS


#8 W30olds

W30olds

    Advanced Member

  • Members
  • PipPipPip
  • 347 posts
  • LocationBraselton, GA

Posted 21 April 2018 - 07:27 PM

It could be anything, have to start with what's not new when you troubleshoot.

I agree. The engines is about 2 years old, so pretty sure it's not seizing up. Maybe leaking injectors, or gas pressure regulator Sent from my SM-G900V using Tapatalk
1995 GP SE, 2006 GTO

#9 Mitchellman

Mitchellman

    Member

  • Members
  • PipPip
  • 137 posts
  • LocationDickeyville, WI

Posted 21 April 2018 - 07:34 PM

To me seems like a bad connection issue. Whether it be at the battery, starter, or ground. But the not starting when it's warmed up kind of seems like a fuel pump issue. Just had to replace the fuel pump in a 97 Lumina that would start fine cold, once warmed up wouldn't start. Fixed his issue.
  • W30olds likes this

#10 Imp558

Imp558

    Proud TransCelestialsexual

  • Contributing Member
  • 5,305 posts
  • LocationErie PA.

Posted 21 April 2018 - 07:55 PM

To me seems like a bad connection issue. Whether it be at the battery, starter, or ground. But the not starting when it's warmed up kind of seems like a fuel pump issue. Just had to replace the fuel pump in a 97 Lumina that would start fine cold, once warmed up wouldn't start. Fixed his issue.

Fuel pressure would be a good place to start if it turned over and failed to start. The engine doesn't rotate so that's a seized engine, bad large connection, battery, or starter.

Banner2.png

"If everything seems under control, you're not going fast enough"  - Mario Andretti

 

1996 Buick Regal L67/4T65E-HD swapped - 1995 Buick Regal GS - 1980 Dodge Sno-Commander - 1968 Empi Imp on '67 Pan - 2001 Chevrolet Express 3500

 

Her Stuff: 1996 SSEi - 2001 Monte Carlo SS


#11 W30olds

W30olds

    Advanced Member

  • Members
  • PipPipPip
  • 347 posts
  • LocationBraselton, GA

Posted 21 April 2018 - 08:24 PM

So just a few minutes ago went and checked. Car started right up. Drove it around and got it warmed up. Drove back to the house and shut it off. Restarted just fine. Tried it about 10 times and zero problems. I'm kinda stumped. Checked the battery connections and they're nice and tight. Will crawl under it after it cools down and check/tighten all the starter bolts/nuts just to make sure nothings loose. Sent from my SM-G900V using Tapatalk
1995 GP SE, 2006 GTO

#12 W30olds

W30olds

    Advanced Member

  • Members
  • PipPipPip
  • 347 posts
  • LocationBraselton, GA

Posted 21 April 2018 - 08:37 PM

Car doesn't smoke when started either. No loss of power other than it being a 3.1L....lol. No misfiring, rough running, no smells of gas. No hesitating. All the symptoms of bad fuel pump I'm not having. Also symptoms of bad fuel regulator I'm not having. If I can get a fuel pressure gauge I will check pressure on the rail. Geez. It's gremlins Sent from my SM-G900V using Tapatalk
1995 GP SE, 2006 GTO

#13 55trucker

55trucker

    Senior Member

  • Members
  • PipPipPipPip
  • 1,117 posts
  • LocationOshawa, Ontario

Posted 21 April 2018 - 08:44 PM

some misgivings here.....

 

is it a case of when the engine is warm........the starter engages but the engine doesn't want to crank?....or the engine freely cranks but won't fire?


LO6Cy24.jpg

 

Steve

 

LQ1 GP GT


#14 W30olds

W30olds

    Advanced Member

  • Members
  • PipPipPip
  • 347 posts
  • LocationBraselton, GA

Posted 21 April 2018 - 09:09 PM

some misgivings here..... is it a case of when the engine is warm........the starter engages but the engine doesn't want to crank?....or the engine freely cranks but won't fire?

The first. The engines warm and seems that the starter won't crank the car. Then sometimes it starts fine Sent from my SM-G900V using Tapatalk
1995 GP SE, 2006 GTO

#15 Mitchellman

Mitchellman

    Member

  • Members
  • PipPip
  • 137 posts
  • LocationDickeyville, WI

Posted 21 April 2018 - 09:16 PM

Fuel pressure would be a good place to start if it turned over and failed to start. The engine doesn't rotate so that's a seized engine, bad large connection, battery, or starter.

Very true. I overlooked the part of it not cranking when warm. My 94 GS would have that issue every now and then. It was a loose connection on the LF fuse panel that would supply the box with power. I put a new bolt in there and good as Gould.

#16 Imp558

Imp558

    Proud TransCelestialsexual

  • Contributing Member
  • 5,305 posts
  • LocationErie PA.

Posted 21 April 2018 - 09:44 PM

My 95 GS turned over and wouldn't start and I did troubleshooting all the way to where the PCM was all that was left. I told it to fuck off and it wouldn't see the light of day until after the L67 swap.

Banner2.png

"If everything seems under control, you're not going fast enough"  - Mario Andretti

 

1996 Buick Regal L67/4T65E-HD swapped - 1995 Buick Regal GS - 1980 Dodge Sno-Commander - 1968 Empi Imp on '67 Pan - 2001 Chevrolet Express 3500

 

Her Stuff: 1996 SSEi - 2001 Monte Carlo SS


#17 55trucker

55trucker

    Senior Member

  • Members
  • PipPipPipPip
  • 1,117 posts
  • LocationOshawa, Ontario

Posted 21 April 2018 - 09:50 PM

One needs to determine where the possible circuit issue is,

 

what I would do is make use of a remote engine starter to test right at the starter bypassing all before it.

 

If the starter/engine cranks freely when done in this manner then the issue is further upstream.

 

 

 

 

 

 

sea_vs2057.jpg


  • W30olds likes this

LO6Cy24.jpg

 

Steve

 

LQ1 GP GT


#18 W30olds

W30olds

    Advanced Member

  • Members
  • PipPipPip
  • 347 posts
  • LocationBraselton, GA

Posted 21 April 2018 - 10:59 PM

Problem is I can't get the car to do it all the time. It's only happened 2 times so far. Really frustrating Sent from my SM-G900V using Tapatalk
1995 GP SE, 2006 GTO

#19 Imp558

Imp558

    Proud TransCelestialsexual

  • Contributing Member
  • 5,305 posts
  • LocationErie PA.

Posted 21 April 2018 - 11:08 PM

If you pull the large grounds and clean under every one you're probably done. I keep a tube of copper paste here for under large connections.
  • W30olds likes this

Banner2.png

"If everything seems under control, you're not going fast enough"  - Mario Andretti

 

1996 Buick Regal L67/4T65E-HD swapped - 1995 Buick Regal GS - 1980 Dodge Sno-Commander - 1968 Empi Imp on '67 Pan - 2001 Chevrolet Express 3500

 

Her Stuff: 1996 SSEi - 2001 Monte Carlo SS


#20 55trucker

55trucker

    Senior Member

  • Members
  • PipPipPipPip
  • 1,117 posts
  • LocationOshawa, Ontario

Posted 22 April 2018 - 12:25 AM

Next time this happens (wherever it takes place) check all of the electrical items (horn, power seat, lights, turn signals, wipers etc) to see if they are functioning properly.


LO6Cy24.jpg

 

Steve

 

LQ1 GP GT





0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users