Register Log In

Contour Enthusiasts Group Archives Forums General Troubleshooting low idle speed/staling at startup

Print Thread

low idle speed/staling at startup #1620099 07/30/06 08:10 PM
Joined: Dec 2004 Posts: 15 Bucks co., Pa. F ford4fun OP New CEG\'er
OP ford4fun New CEG\'er F Joined: Dec 2004 Posts: 15 Bucks co., Pa.	what would cause my 2.5 to idle real low(3-400) at startup or sometimes just stall. the only code I get is for the darn O2 sensor. this has no mods(yet).

Re: low idle speed/staling at startup #1620100 07/30/06 08:12 PM
Joined: Jun 2005 Posts: 5,345 Virginia, USA T Tony2005 Addicted CEG\'er
Tony2005 Addicted CEG\'er T Joined: Jun 2005 Posts: 5,345 Virginia, USA	What is the exact O2 sensor code? Maybe time for a new O2 sensor. What year, mileage and transmission (auto or manual)? "Always do the cheap and easy ones first." 1996 V6 ATX 96K miles

Re: low idle speed/staling at startup #1620101 07/30/06 10:58 PM
Joined: Sep 2000 Posts: 4,693 Thousand Oaks, California, USA B Big Jim_dup1 Hard-core CEG'er
Big Jim_dup1 Hard-core CEG'er B Joined: Sep 2000 Posts: 4,693 Thousand Oaks, California, USA	Most likely cause of low idle and stalling on start-up (sometime not even starting) is a sticky IAC valve. Try cleaning it. Clean the throttle body at the same time. Sometimes the IAC doesn't respond to cleaning and needs to be replaced. I suspect that the oxygen sensor code is an additional problem. And it would still help if you would tell us make, model, year, engine, and trans. Or would you rather that we just guess? Jim Johnson 98 SVT 03 Escape Limited

Re: low idle speed/staling at startup #1620102 07/31/06 01:07 AM
Joined: Feb 2005 Posts: 1,119 Eastern PA Z ZeroHour Hard-core CEG\'er
ZeroHour Hard-core CEG\'er Z Joined: Feb 2005 Posts: 1,119 Eastern PA	This needs to be made a sticky by now. Issues effecting idle: CEL (Check Engine Light) Failing/failed/disfunctional O2 sensors Exhaust Leaks Dirty MAF (Mass Air Flow) Sensor Dirty/Worn IAC (Idle Air Contorl) Intake leak EGR (exhaust gas recirculation) issues -Dirty EGR passages -Failed EGR vaccuum cyclinder (might have another name) -Malfucntioning DPFE (??? messures EGR flow) Sensor Vaccuum leaks bad air temperture sensor Bad plugs/wires Dirty air filter Bad gas Gas cap not on tightly (cause fuel pressure loss) secondaries stuck open (lean condition, too much air) dirty intake manifolds (rich condition, not enough air) clogged pre-catalytic convertor clogged main catalytic convertor dying alternator and battery worn serpentine belt timing chain transmission problem last time oil was changed (I have seen sluge pour out of oil pans) Did I miss anything? There could be alot issues effecting your idle. I would think since your idle is 300 to 400 it would indicate a fairly large problem. Such as bad plugs or the catalytic convertor. But it always be a compination of many small problems depending on the age or condition of the car. I would think you would have a CEL. As mentioned, autozone and advanced auto parts will scan the car for free. 1998 SE Duratec V6 ATX Ebay intake with K&N Filter Trubendz Exhaust Custom Hood

Re: low idle speed/staling at startup #1620103 08/05/06 02:54 PM
Joined: Dec 2004 Posts: 15 Bucks co., Pa. F ford4fun OP New CEG\'er
OP ford4fun New CEG\'er F Joined: Dec 2004 Posts: 15 Bucks co., Pa.	My Contour is a 98 se, 2.5l 5 speed.

Re: low idle speed/staling at startup #1620104 08/05/06 04:58 PM
Joined: Jun 2005 Posts: 5,345 Virginia, USA T Tony2005 Addicted CEG\'er
Tony2005 Addicted CEG\'er T Joined: Jun 2005 Posts: 5,345 Virginia, USA	Originally posted by Tony2005: What is the exact O2 sensor code?... "Always do the cheap and easy ones first." 1996 V6 ATX 96K miles

Moderated by horseydug_dup1, Ray_dup1

Link Copied to Clipboard

Powered by UBB.threads™ PHP Forum Software 7.7.5