Car stalls when @ idle
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Pro
Joined: Nov 2001
Posts: 655
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From: San Diego California
Car stalls when @ idle
Need help troubleshooting my problem I don't know where to start on this one.
The car runs great but when at temp and she is warmed up, under load at a stop light sometimes it stalls. she starts right up without a problem.
I'm not throwing any codes. Temp is good(200*),oil temp is good(210*)
I did notice the oil pressure was a bit low and the idle drops like it want to stall (about 700rpm then dips)
if I put it in neutral it still does the same but not low enough to stall.
I don't know what to check first and do't want to troubleshoot blindly and really mess things up.
Please help.
'90 L98 automatic
The car runs great but when at temp and she is warmed up, under load at a stop light sometimes it stalls. she starts right up without a problem.
I'm not throwing any codes. Temp is good(200*),oil temp is good(210*)
I did notice the oil pressure was a bit low and the idle drops like it want to stall (about 700rpm then dips)
if I put it in neutral it still does the same but not low enough to stall.
I don't know what to check first and do't want to troubleshoot blindly and really mess things up.
Please help.
'90 L98 automatic
Last edited by eddieL98; Apr 18, 2006 at 09:34 PM.
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
Originally Posted by eddieL98
Need help troubleshooting my problem I don't know where to start on this one.
I don't know what to check first and do't want to troubleshoot blindly and really mess things up.
Please help.
'90 L98 automatic
I don't know what to check first and do't want to troubleshoot blindly and really mess things up.
Please help.
'90 L98 automatic
Originally Posted by Lichen
I see that you are running headers. I had the same problem with my '93 and had to switch to heated O2 sensors. Cleared up my "dying at the stoplight" problem.
Originally Posted by SonnyinVA
sounds like either your TPS or your IAC valve. if you do a search, i know there is info here about how to check it. it's easy to do, all you need is a voltmeter.
Originally Posted by eddieL98
do't want to troubleshoot blindly and really mess things up.
RACE ON!!!
Melting Slicks
Joined: Nov 2005
Posts: 2,143
Likes: 488
From: Leonardtown Maryland
I've had this happen on a couple of cars. I found that cleaning the inside of the throttle body has corrected the problem. It always happened while slowing down for a turn or or stop. I remove the air intake horn/hose to the throttle body, open the butterfly valve, and spray some fuel injector cleaner into it. I also have a long pair of forcepts that I put a piece of lint free cloth soaked in cleaner on and then slowly and carefully swab the inside of the trottle body. When it comes out clean I'm done because it will be nasty when you start. I believe what this accomplishes is cleaning the sensors (on some cars it's called an "idle speed motor" used to keep your idle speed up when you are off the gas. Good luck.
with CFI. He seems to be on the right track. Everything needs to be planned out as which he mentions cant make it worse but CAN delay your fixing time and cost MORE money than is nessecary. Good luck
