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1997 PONTIAC GRAND AM 3100. variation of idle speed, Up to 1500rpm, down to around 300rpm then back to 1500rpm, then idle fine

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Could be a (tps)throttle position sensor also look at (maf)mass airflow sensor/(map)manifold absolute pressure sensor.(iac)idle air control valve...or and a bigger fix a leaking intake manifold gasket but will usually stall when stoping or idleing down.hope this helps so many possibilities but i hope this helps.please rate my answer,and thankyou for using fix ya.

Posted on Apr 02, 2011

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My 1997 grand prix idiles high when you start it stays at 2to 3 grand on r.p.m


The most common causes of high idle speed is a faulty idle air control valve, a sticking throttle cable, or dirty throttle body.
It could also be a vac leak, but that usually does not come and go.

Apr 20, 2013 | 1997 Pontiac Grand Prix

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My nissan 2001 sylphy is not idling less than 1500rpm whats wrong


Have you check you speed sensor. Ot idle sensor

Feb 28, 2013 | Cars & Trucks

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Rpm's drop down to between 300 / 400


Check idle speed sensor. Check for auxilliary driven items ie a/c compressor , power steering pump are not failing and overloading the idle speed.

Feb 10, 2013 | 1997 Pontiac Grand Am

1 Answer

1997 pontiac , grand am 3100 v-6 runs good but poor idle what could be wrong


Without some more detail it could be a multitude of things. Bad ignition, fouled plugs, bad wires, vacuum leaks, MAF sensor, IAC sensor, the list goes on. Is your check engine light on? If it is you can get a scan done at most auto parts stores free to check your codes. That would go a long way to helping find your problem. If it is not on can you give a little more detail on exactly what its doing, how it sounds or acts?

Nov 18, 2012 | 1997 Pontiac Grand Am

1 Answer

What is the idle speed for a 8m pontiac grand am?


The normal idle speed for almost every car is about 7500 to 8000. I'm not sure if you would or not, but if you have performance parts on it them i would stick a little over 8000 but around 7500 is the best idle speed to have.

Feb 24, 2011 | 1989 Pontiac Grand Am

1 Answer

What should my 2000 pontiac grand prix idle at and how do i adjust that?


1200-1500rpm and you cant change it, it has a idle position sensor built to the tb.

Dec 13, 2010 | 2000 Pontiac Grand Prix

1 Answer

I have a 97 grand am gt with 3.1 idles fine but normal acceleration and cruise is nearly impossible. Bogs down at all speeds. Hard acceleration is fine goes good.


I had the same problem with my 89 grand am it was caused by a faulty crank position sensor. Initially it would cut out when accelerating and eventually wouldn't start at all, replaced the sensor runs great again.

Aug 22, 2010 | 1997 Pontiac Grand Am

1 Answer

1997 Pontiac Grand Prix GT; Elec problem with fan


Replace the blower resistor that is mounted next to the blower motor on the passenger side of the vehicle.
This will restore correct blower operation and I suspect it is also back-feeding voltage resulting in your electrical issues.
Two screws hold the blower resistor into the heater case and it is very easy to replace.
Good luck

Mar 11, 2010 | 1997 Pontiac Grand Prix

1 Answer

No power will not rev over 3000 rpm


yep code...PO502 check your ECM grounds but i pretty much can assure you you need a new!! ECM

Jan 15, 2010 | 2002 Pontiac Grand Am

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