Question about 2002 Acura MDX

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P0108 the idling is going up and down after starting. when i race the car rpm will not pass 30m per

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  • Anonymous Mar 17, 2014

    car misses at idle and when going uphill. has codes po0172 and p0108. only when it is warmed up

  • Anonymous Mar 17, 2014

    car misses at idle and when going uphill. has codes po0172 and p0108.

  • Anonymous Mar 17, 2014

    car misses at idle and when going uphill. has codes p0172 and p0108.

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The code is for the MAP sensor manifold absolute pressure. This sensor can cause serious driveabilty problems .There are 2 different types used on cars and there are ways for a shop to test them with a volt meter and hand help vacuum pump. or you can just replace it see if it corrects your problem and ask the place you buy it from if it doesnt can you return it .and then let a shop diagnos the problem .

Posted on May 31, 2009

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1 Answer

Truck idles very high when starting


how cold is cold???? In Alaska or Key west?
tell location and bingo, i know. but didnt
all engines race cold for sure EPA regulated ones.
and race faster the colder it is

what is RPM see dash, see dash rpm gauge called the
tachometer, use that to answer
or if no tacho there, ill never know here in the cloud.

no engines size stated


its 85f here.
2000 RPM is easy cold.
here about 1500 cold (85f) but drops fast say 5min.

Dec 25, 2015 | 2002 Suzuki XL-7

1 Answer

RPM's go high when driving but then go back to normal


What you are describing sounds normal. RPM's stand for revolutions per minute. Each minute your engine is running, the pistons are going up and down. When you are not going anywhere, your engine is idling and so the RPM's should NOT be very high. However, when you race up a hill, your RPM's SHOULD be high because your engine has to work hard to climb the hill or to go fast.
Idle speed= 650 Revolutions Per Minute. That means your engine cylinders each work 650 times in One minute.
At freeway speeds, your engine will revolve somewhere between 1600 and 2100 times per minute. I hope that helps.

Apr 20, 2015 | Cars & Trucks

1 Answer

The tachometer shows 900 RPM on idle position but as i put the car in gear and release the clutch the RPM drops and u have to race the car manually through accelerator pedal.recomend the diagnostics a


The engine does not need to be raced when cold

The vehicles computer will adjust the idle according
to how the manufacture programmed it

After about one mine or so, the idle on most vehicles
comes down to approx 750RPM, generically speaking

When you put the car in gear,assuming it is an automatic,
the rpm will drop a 100 at most & may be adjusted by the
computer, just as it does when you put the A/C on. That is
to compensate for the change in engine load

You should be waiting for the rpm to come down to 650 to
800 & then a couple more minutes for some temp to come
up, before driving off. In cold weather wait at least 5 min or more

I think your vehicle is not working correctly, or you not explaining
it in a way I understand what answer you want

Sep 04, 2012 | Toyota Cars & Trucks

1 Answer

2003 ford ranger intermittent idle


One possibility is a buildup of dirt and sludge in and around the idle air control valve. The buildup causes the idle air valve to stick.

Jun 24, 2012 | 2003 Ford Ranger Regular Cab

1 Answer

I have a 1990 nissan patrol. When i start the car te idle races off to 2300 RPM. The Auto choke seems to be free to move, and if i manually hold the auto choke off it stabalises at 1000 RPM


you can check for vacuum leaks use a short piece of hose like a stethoscope = no . try setting the choke.black and yellow part. loosen the screws and twist it counter clockwise, this should take it out of the high idle mode. the heater in the choke might be bad, ohm it and test for power
carburetor-carby-carbie-very-rare-for-font-b-nissan-b-font-font-b-patrol-b-font-5wza5llwn2qwnlqvdjcvdeqf-3-0.jpg

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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...


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.

Sep 03, 2010 | 1997 Chrysler Concorde

1 Answer

Oldsmobile Delta 88, Idles High on Cold start with DTCs


Sounds like a vacumn leak. Gasket under intake plenum may be leaking. Be sure the pcv valve has the o-ring around it in the correct place also as it will set a code.

Jan 18, 2010 | 1997 Oldsmobile 88

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