engine rpms drop at idle
Thread Starter
Staging Lane
Joined: Jun 2007
Posts: 80
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engine rpms drop at idle problem im having is at idle with or with out the a/c on the rpms drop from 800 to 150-200 for about 2 to 3 seconds than it idles back up to 800. this just started in the last couple of weeks then this morning it happened every time i stopped. car has plenty of voltage and runs good while driving. my question is could my fuel pump be going out, ist never been replaced and the car has 256,000 miles on the clock. any help would be helpful. thanks in advance.
TECH Senior Member
iTrader: (3)
Joined: Oct 2006
Posts: 7,564
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From: Decatur, TN (N-W of Athens)
I'd say your IAC is bad/going bad. They're cheap, so not a bad thing to replace anyways if it has even 50K miles heh While you're doing stuff, check your TPS voltage and O2 mV
Thread Starter
Staging Lane
Joined: Jun 2007
Posts: 80
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the IAC was replaced last week and the TPS was replaced a few months ago. another thing this may and may not be related to the problem, the cars hard to start in the morning i have to turn it over three or four times. what gets me is after it starts you can turn the car off than turn it back on and it starts right up until it sit for a couple of hours.
Banned
Joined: Feb 2008
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From: I moved to over there
the IAC was replaced last week and the TPS was replaced a few months ago. another thing this may and may not be related to the problem, the cars hard to start in the morning i have to turn it over three or four times. what gets me is after it starts you can turn the car off than turn it back on and it starts right up until it sit for a couple of hours.
