Question about 1998 Chrysler Concorde

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Trouble getting car to idle - 1998 Chrysler Concorde

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IAC Idle Air Control sensor is usually to blame. The MAF and TPS can effect idle also but usually IAC especially if it's erratic going up and down. If smooth idle but dies then maybe fuel pressure/pump problem or something is heating up and causing it to die. Especially a shorting sensor.

Posted on Sep 02, 2010


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I have a 1993 ford explorer, idle goes up and down specially when the car is cold, what can i do to fix it.

Hello Carmelo Cortez,

The wise thing to do would be to get your codes read...
Beg, borrow or buy the FACTORY WORKSHOP
REPAIR MANUALS.... and trouble shoot yourself...

FREE technical service bulletins (TSBs) ...
and trouble shooting tips available for most popular USA market vehicle... (registration required) BBB Industries - FREE.
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My best advice would be to get your codes read...

Some parts houses & muffler shops will do this for free...
Even with the codes some of these issues can be a bit
of a riddle...

Not expensive nor difficult to do...

With your trouble seeming to be a cold issue...
Logically (Occam's razor) that would pint to your
(cold start) Idle air control valve ... Click here
1993 FORD EXPLORER 4 0L V6 Idle Air Control IAC Valve RockAuto


More Information for MOTORCRAFT CX1828

Hope this helps

Carnac the Magnificent

Jun 19, 2017 | Ford Cars & Trucks

1 Answer

'96 Mystique 2.0 trouble with idle. replaced idle mixing valve. I don't get any codes, I have to shift to neutral at a stop sign or light to keep from stalling. It gets real rough almost a lope.

troubles at lights may very well mean a vacuum leak from a faulty brake booster
test by stopping and then applying the park brake and taking your foot of the brake pedal
you can do this test in the garage
start the engine , apply the park brake , place in drive
if it idles alright , put you foot on the brake
if it plays up , replace the brake booster

Jan 24, 2017 | Cars & Trucks

1 Answer

Why is idle to low.

Just curious why you think the idle is too low on your Grand Am. Do you have a SES/CEL onin the Instrument Panel? If so, take it to an O'Reilly, Autozone, Advance Auto, or your local Auto Parts store. Have them plug in the DIagnostic Trouble Code Reader to get the error codes. The DTC reader will probably give you suggested trouble/repair resolutions. Otherwise take it to a reputable auto repair shop.

Sep 21, 2014 | 2005 Pontiac Grand Am

1 Answer

If someone moved the factory idle screw,could this cause any performance problems?

Should not be anything above idle speed. You might get trouble Codes if too rich or lean at idle and truck may not idle well.

Feb 26, 2014 | 1990 Ford F150

1 Answer

After starting the Check Engine light comes on and the cruise light flashes. Also the car will idle but not rev.

Impossible to diagnose without the trouble codes. Get the codes read and post here. ALWAYS start by reading the trouble codes to get a starting point.

Aug 26, 2017 | 2005 Subaru Forester

1 Answer

Got trouble code p0125. Car starts then idles way low then climbs back to regular idle. What is the problem?

I have a 96 Towncar, which had a P0125 trouble code set. I changed the thermostat and cleared the code - only to have it reset in a couple minutes after starting. The car was hard starting, and died several times before it actually ran. I did also noticed that while running the idle speed had risen to over 950 RPM.

I changed the Temperature sending unit located next to the thermostat housing, and again cleared the code. After starting the car again it performed excellently and did not reset the P0125 trouble code.

Jan 02, 2012 | 2001 Lincoln Town Car

1 Answer

I am having trouble idling at stops - take off it chokes/sputters

A few items not set correctly.
Idle rpm
Mixture and timing..
See no connection with transmission.
Mazda 626 from 2000 needing transmission work?
Normally Mazda's need virtually nothing.
Run 200.000 miles.
And they like original replacement parts.

May 03, 2009 | 2000 Mazda 626

2 Answers

Trouble Code description

Code 46 is indeed the trouble code for the Idle Speed Controller which is that big black box thingy on your throttle body. A lot of Chilton-type manual books omit that code because the ISC isn't found on pre 94 Metros. The ISC is a computer controlled auto-adjuster for the engine idle.

An important note: code 46 is often caused by misadjusted distributor timing. As you probably know, timing affects the idle, and if improper timing moves the idle beyond the ISC's adjustment range, the check engine light will come on and diagnostics will return code 46.

Jul 11, 2008 | 1994 Geo Metro

1 Answer

1909 buick skylark tps low volts trouble code

replace ignition coil make sure by dealer the right mode is used when ordering if not ordered right you will get a difference in engine volts

Jun 07, 2008 | 1991 Isuzu Pickup

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