Question about 2001 Oldsmobile Aurora

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When I accelerate the car jerks and the tachometer tops out at 8000 rpm even though the engine is not racing. when I accelerate the tachometer goes down to 7000 rpm. I have to shut the car off to reset the tachometer to 0.

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I had a 2001 aurora with the same exact problem. lucky for me a drunk driver smashed into it with a plow truck and it tumbled down a cliff into a river while it was parked and they gave me 12k for the car that i paid 8900 for .
i beilive its and ignition problem

Posted on Sep 29, 2010

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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

I have a 1995 suzuki sidekick that is revving hi then low while in nuetral also when driving now it revvs up very high while sitting at a stoplight


at what RPM?,sure the 2wd has no tachometer,

Sidekick, with what engine? sure 5speed and 2wd,
but what engine.?
in 1995 they (last year this) 2 engines
the 8v and 16valve,
both, night and day different, EFI.
TBI and MPI injected, 8v is black top, 16v says 16 valves on top.
but both engines, will fail ISC controls like that if there are problems.(idle speed controls)
the surging (hunting) is one of 2 things.
  1. (too lean, or air leaks)
  2. or ISC lost control)
the ECU on the car will in fact hunt the ISC if it can not attain
800 RPM hot IDLE, that is its JOB, to do that, endlessly.
in fact 200 times a second.!
but is not working. (this control, its out of control for sure)
to find this can be easy or hard.? (luck and true causes)
depends on true cause.
I cant do both engines here, be like 10 pages.
The 8v engine races with all air leaks. and hunts. (races)
the 16v goes lean with all air leaks, (air density system is unique)
and goes slower, RPM and may hunt. no RPM stated so cant wax smarter...sorry.

so its a dirty ISC? cant close fully, ? clean it? first.
the 8v has air leaks. caused by vast reasons.
cracked hoses. leaking diaphragms, even the brake booster can leak. lots of leakage patch possible
or some one fiddled the idle air bleed screw making it fail.
try closing that valve (screw) turn it CW directly clock wise.

this page covers both systems.

http://www.fixkick.com/fresh-air/idle-air-supply.html


this ISC cleans just like the EGR that leaks.
egr leaking cause, low RPm and it too, can make the ISC go nuts.
so, but no RPM stated. so.....
eg: hunting from 1000 to 1500RPM
or hunting from 500 to 700 rpm?

i pinch all hoses first.
if RPM drops the hose is cracked or the other end is leaking air.
every 50k miles?

http://www.fixkick.com/sensors/cleaning-egr-isc/double-trouble1w.JPG

does RPM go below 800 RPM HOT engine?
yes ./no
this a is key factor.

Feb 28, 2015 | 1995 Suzuki Sidekick

1 Answer

My Nissan sentra fn15 with a ga15 engine, the rev counter does not change with rpm increase, drive car for 10 mins it slowly goes to 5-600 rpm, it also stalls sometimes, are they related


WHAT YEAR? CAR.
the engine tachometer reads what.
that whole post is a contradiction.
ahh, you mean the engine does not accelerate, or the engine bogs.
600 RPM is why below, 800 normal (most cars)
the engine stalls, well sure it will as low idle speed will surely do.
so the real post is my engine stalls.
and if i try WOT ,it will go above 600 rpm in or out of gear?
wot means wide open throttle.
can the engine race to 3000RPM in PARK (or neutral)
if engine power is ok, full WOT power up a hill and is only and idle problem say some. and we work bad idle.

the top reason for stalls (besides #1 never ever doing the 60k mile service,repeats at every 60k)_
is a stuck open EGR (part of same service to do that but Ill add that)
or stuck closed ISC (electric IAC)

Oct 16, 2013 | 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

Sluggish acceleration, frequent jerking and engine knock at high RPM


Sounds to me like the timing is off! it COULD be bad gas though! run that tank through, and refill, then see how it feels!

Apr 04, 2012 | 2002 Ford Mustang

1 Answer

Tachometer goes to 8000 rpm even though engine is not rev'ing that fast


Mine did this. It was the Crank Position Sensor. The replacement did not need to 'relearn'.

Jan 30, 2010 | 2001 Oldsmobile Aurora

1 Answer

Car: Nissan Maxima SE 1997 tachometer broken


the dash voltage egulator probably went bad. First,check the battery & make sure you have 12 volts,not running. Check it again running & you should see about 14.5 volts. If that's good,I'd replace the guage assembly.

Jun 28, 2009 | 1995 Nissan Maxima

1 Answer

My car is jerking while accelerating and reaching certain RPM


clean mass air flow sensor check for mil light

Jun 01, 2009 | 2002 Buick Century

1 Answer

My car is jerking while accelerating and reaching certain RPM


I would look for a fault in the ignition system such as a cracked spark plug. Might need a scope check to put your finger on the problem

Apr 06, 2009 | 2002 Buick Century

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