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Joined: Nov 2002
Posts: 851
Veteran CEG\'er
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Veteran CEG\'er
Joined: Nov 2002
Posts: 851 |
Could maybe be a bad IAC? Is it idling at normal idle speed (750RPM or so)? If you give it some gas does it run OK?
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Joined: Dec 2002
Posts: 535
Veteran CEG\'er
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OP
Veteran CEG\'er
Joined: Dec 2002
Posts: 535 |
Originally posted by brianl703:
Could maybe be a bad IAC? Is it idling at normal idle speed (750RPM or so)? If you give it some gas does it run OK?
IAC was replaced by dealer 2 months ago, it runs ok once you drive it down the block the idle seems about right but is rough on first start though even when not cold it idles at about 1000 rpm for a good 60 seconds , didnt do that before ?? heres what ive done , new fuel filter , plugs wires , cleaned maf , new precats , new pcv valve , air filter new IAC 2 months ago and water pump and thermostat , if i reset the computer on first start after that its real bad till you drive it a bit more so then any other time very odd im at my end of solutions...
2006 KIA RIO LX 5-speed
2003 Escape 3.0L wifes
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Joined: Sep 2003
Posts: 2,725
Hard-core CEG\'er
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Hard-core CEG\'er
Joined: Sep 2003
Posts: 2,725 |
Originally posted by brianl703:
With the MAF unplugged it's probably defaulting to richer mixture than normal. Cold start problems can be caused by a bad engine coolant temperature sensor. A bad sensor can cause the engine computer to think that the engine is warmer than it really is, causing it to not richen the mixture at cold start.
Does it only do this on a COLD start (ie, engine has been sitting for long enough to be at outside temperature) or does it do it on a warm and a cold start?
Thats what my deal was a few months ago, I replaced the Engine Coolant Temperature ( well actually I had help with it to), anyway the thing starts up fine for me now.
It is really easy if you a Zetec to replace ( 15 minutes), I dont know about a Duratec though. It only cost $18 at NAPA, try it once see if it fixes the problem.
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