My 1997 Chrysler Concord idles at 2500 to 3000 rpm when first started and when it warms a little it idles at 2000 rpm and stays there. When I start it right after I turn it off, it starts at 2500 rpm then quickly slows down to 1400 rpm and stays there until I turn on the air, then it idles at 900 rpm. When I start the car with the air on, it starts at 2500 rpm and quickly slows down to 900 rpm and stays there. I changed the throttle position censer and the idle slowed to 1000 rpm, but this lasted only 2 weeks. Can you help me?

Question 1

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High rpm when warming - choke problem?

It is a little high but if the ambient temperature is very low it would be ok providing you understand that there will be a bit less economy. You can fine tune the choke to drop another notch on the accelerator cam so that it would idle at say 1500rpm and the gear engagement would be less harsh

Dec 23, 2013 • Cars & Trucks

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My 2003 chryler seabring water pump went out i changed it got the car back together when i first start it in the morning it idels fine then when it warms up at stops the idle go's to 800 rpm or st

OK. Nothing to do with water pump.
Recommend checking your IAC (Idle Air Control) circuit. This allows air to bypass the throttle body while idling, at stop sign, etc.
Here are a couple of links that should help you
Chrysler Sebring Idle Air Control Valve
How To Install Replace Idle Air Control Valve 2 7L 2001 06 Chrysler...

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I personaly would replace the sensor

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When I start the truck, it will idle at about 3000 rpm and stay there, will idle down occasionally, but only to about 2000 rpm after it warms up, also there is always pressure in the cooling system, if it...

Try unplugging the connector on the throttle position sensor and start vehicle. The TPS could be bad

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2002 chrysler concorde lx low idle

with a 2002 Concord 3.5 V-6, what should the rpm be at 60mph? 70 mph?

I'm not sure if the overdrive gear is lost in the tranny, but the transmission light is on.

Thanks

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Rough idle and check engine light concord

Check your EGR valve and your IAC Idle Air Control valve make sure both are functioning correctly

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Maybe a short to the TPS or something shorting it out. There's also the IAC that really controls the idle but usually it will cause the RPM's to go up and down a little erratic if bad. The MAF sensor can cause major problems as well but since you already swapped the TPS and it helped and then stopped I would focus on that sensor and especially it's wiring to and from the ECM. Be careful with the sensor signal wire to the ECM can blow it if more than 5v passes or spikes.

John Egan Jan 16, 2011

I have fixed the problem by replacing the upper intake gaskets after a local repair shop applied a smoke machine to the intake to find the air leak in two cylinders on same bank.

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