Troubleshooting - Car stalling at idle

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unplugged
MegaSquirt Newbie
Posts: 5
Joined: Thu May 31, 2012 8:07 am

Troubleshooting - Car stalling at idle

Post by unplugged »

At idle car will randomly die like a switch was flipped while idling. It will eventually restart but makes me not want to drive it.

Log (lat several minutes attached) show MAP climbing just before it dies. Not sure if this is a symptom or the cause of it stalling.

I am running out of things to look at. Any thoughts would be appreciated.

MS-II, 3.0.
sw. 2.8880
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trakkies
Super Squirter
Posts: 1162
Joined: Tue Dec 30, 2008 3:06 am
Location: SW London, UK

Re: Troubleshooting - Car stalling at idle

Post by trakkies »

Is it really idling at 1800 rpm? And the TPS graph shows exactly zero all the time? I'd expect to see a bit of jitter on that even with the throttle closed.
Dave P, London UK.
Rover V-8
MSII V3
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unplugged
MegaSquirt Newbie
Posts: 5
Joined: Thu May 31, 2012 8:07 am

Re: Troubleshooting - Car stalling at idle

Post by unplugged »

I had earlier increased the idle to try and prevent it stalling. It will idle for 10-15 minutes with no input on throttle.
Long enough for cooling fan to cycle several times.
Then randomly the car will just die like it was switched off.
The log was an attempt to see what was happening just before it died.
This is when I noticed the slight uptick in MAP that preceded it dieing.
What I am not sure is, if this is if the MAP increase is because the car is already dieing or did this cause it to die.
Matt Cramer
Super Squirter
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Joined: Sat Jul 03, 2004 11:35 am

Re: Troubleshooting - Car stalling at idle

Post by Matt Cramer »

I suspect the MAP increase is caused by whatever is going wrong. Can you post a copy of the tune file as well? That will give everyone more to go on.
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