91 Lumina motor dies when let up on the gas
#1
11-03-07, 08:38 AM
91 Lumina motor dies when let up on the gas
My 91 Lumina (3.1 ltr) runs fine until it warms up. It seems to die when I let off the gas, and motor surges now & then, & sometimes the surge will make it die. I have been putting it in neutral when slowing down to keep it from dying, but the longer it runs the more it does this. Do I need to change the Idle Air Control valve/switch or is it something else? Begging for help!!!
#2
11-04-07, 05:51 AM
Yes you have a problem
Sounds to me like you have a fuel filter pluged up,or a fuel pump on its way out.Try this first.After you change the filter run a fuel injector cleaner in your gas.Hope this helped.RICK
#3
11-04-07, 09:35 AM
You might want to pull a couple of the easiest plugs to get at and 'read' them. I'd be curious to what you report back about plug color.
#4
11-05-07, 10:08 AM
thanks!
Originally Posted by Ricknick
Sounds to me like you have a fuel filter pluged up,or a fuel pump on its way out.Try this first.After you change the filter run a fuel injector cleaner in your gas.Hope this helped.RICK
Thanks so much & will let you know whats up. Shanny
#5
11-05-07, 10:13 AM
Thanks
Originally Posted by ecman51`
You might want to pull a couple of the easiest plugs to get at and 'read' them. I'd be curious to what you report back about plug color.
Thanks, Shanny
#6
11-09-07, 06:56 AM
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I used to have a 92 Lumina and had to clean the IAC all the time. I've also heard that sometimes the pintle can stick causing the IAC to fail. Mine would always get full of carbon. I would also check for vaccumm leaks though.
#7
11-09-07, 09:53 AM
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Originally Posted by isaw26
My 91 Lumina (3.1 ltr) runs fine until it warms up. It seems to die when I let off the gas, and motor surges now & then, & sometimes the surge will make it die. I have been putting it in neutral when slowing down to keep it from dying, but the longer it runs the more it does this. Do I need to change the Idle Air Control valve/switch or is it something else? Begging for help!!!
