Question about 1999 Oldsmobile Alero

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The car is missing very bad. It want stay crunck.

The car is missing very bad. It want stay crunck. Will not idle.

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  • Oldsmobile Master
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It could be bad plugs and wires.clogged fuel filter.bad gas.dirty injectors.scan it check mass air flow sensor.and egr valve.

Posted on Jul 14, 2009

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2007 V8 diesel sport. Missing badly at idle (650 RPM) when cold, runs smoothly if revs raised to 1000 RPM. Does not appear to miss under full power, and will generally run smoothly at idle when warm.


most likely bad injector tips
have them serviced and raise the idle to 750 rpms as the lower idle speed may not be raising the combustion pressure temperature to ignite badly sprayed fuel ( diesel has to be atomized not squirted )

Dec 01, 2016 | Cars & Trucks

1 Answer

Missing fire


a bad injector can cause a miss, you can listen to each injector with a stethoscope. It should make a rapid clicking sound. If it makes a deep thumping sound it is likely bad. also an intake leak can cause a miss at idle. also an EGR valve partially open can cause miss at idle. I always check cylinder compression when replacing plugs or coils for a miss. You need quality tech to check for above items.

Mar 02, 2014 | Toyota Avalon Cars & Trucks

1 Answer

Engine is miss firing


For engine misfiring problem check the help links mentioned below. Click the link below to go through the troubleshooting procedure :---- Engine misses and truck jumps? Hard to down shift? Issue with high gear only? http://technoanswers.blogspot.in/2012/02/engine-miss-and-truck-jumps-hard-to.html

-----------
Bad miss at idle?

http://technoanswers.blogspot.com/2012/01/bad-miss-at-idle.html

-----------
While stop engine idles like cylinder missing?

http://schematicsdiagram.blogspot.com/2012/01/while-stop-engine-idles-like-cylinder.html

------------
Engine Misfire codes for car?


http://schematicsdiagram.blogspot.com/2011/12/engine-misfire-codes-on-chevrolet.html
Engine Misfire codes?

http://schematicsdiagram.blogspot.com/2011/12/engine-misfire-codes-on-chevrolet.html

--------------
Misfire on cylinder 4?

http://schematicsdiagram.blogspot.com/2011/12/misfire-on-cylinder-4.html

-----------
Oil on spark plugs and car misfires?

http://technoanswers.blogspot.in/2012/02/oil-on-spark-plugs-and-car-misfires.html

----------

This will help.

Thanks.

Mar 06, 2012 | 1997 Acura CL

1 Answer

Car miss's


For engine misfiring problem check the help links mentioned below.Click the link below to go through the troubleshooting procedure :---- Engine misses and truck jumps? Hard to down shift? Issue with high gear only? http://technoanswers.blogspot.in/2012/02/engine-miss-and-truck-jumps-hard-to.html-----------Bad miss at idle? http://technoanswers.blogspot.com/2012/01/bad-miss-at-idle.html
-----------While stop engine idles like cylinder missing? http://schematicsdiagram.blogspot.com/2012/01/while-stop-engine-idles-like-cylinder.html
------------Engine Misfire codes for car?

http://schematicsdiagram.blogspot.com/2011/12/engine-misfire-codes-on-chevrolet.html


Engine Misfire codes?

http://schematicsdiagram.blogspot.com/2011/12/engine-misfire-codes-on-chevrolet.html

--------------
Misfire on cylinder 4?

http://schematicsdiagram.blogspot.com/2011/12/misfire-on-cylinder-4.html

-----------
Oil on spark plugs and car misfires? http://technoanswers.blogspot.in/2012/02/oil-on-spark-plugs-and-car-misfires.html
----------This will help.Thanks.

Feb 17, 2012 | 1993 Nissan Maxima

1 Answer

My 1996 tahoe is giving me cylinder 2 misfire And runs ruff idle


For engine misfiring problem check the help links mentioned below. Click the link below to go through the troubleshooting procedure :---- Engine misses and truck jumps? Hard to down shift? Issue with high gear only? http://technoanswers.blogspot.in/2012/02/engine-miss-and-truck-jumps-hard-to.html

-----------
Bad miss at idle?

http://technoanswers.blogspot.com/2012/01/bad-miss-at-idle.html

-----------
While stop engine idles like cylinder missing?

http://schematicsdiagram.blogspot.com/2012/01/while-stop-engine-idles-like-cylinder.html

------------
Engine Misfire codes for car?

http://schematicsdiagram.blogspot.com/2011/12/engine-misfire-codes-on-chevrolet.html
Engine Misfire codes?

http://schematicsdiagram.blogspot.com/2011/12/engine-misfire-codes-on-chevrolet.html

--------------
Misfire on cylinder 4?

http://schematicsdiagram.blogspot.com/2011/12/misfire-on-cylinder-4.html

-----------
Oil on spark plugs and car misfires?

http://technoanswers.blogspot.in/2012/02/oil-on-spark-plugs-and-car-misfires.html

----------

This will help.

Thanks.

Feb 14, 2012 | 1996 Chevrolet Tahoe

1 Answer

My lexus gs300 will start but will not stay crunck unless the air is on and when you drive it with the air on it makes a loud noise. What is this?


WHen you turn on the a/c, the computer kciks up the idle speed to compensate for th load of the compressor on the engine. That tells me your idle air control is not wrking electrically or hte passages are plugged.

Feb 25, 2011 | 1994 Lexus GS 300

1 Answer

Would the car make and noise if the spark plugs needed to be replaced?


tHE ENGINE WOULD MISS BY HAVING A LOW VIBRATION. NO NOISE WOULD BE MADE. WHEN HAVING A BAD PLUG THE RPM TACH GAUGE'S NEEDLE WILL FLUXUATE. IF THE PLUGS ARE GOOD THE NEEDLE WILL STAY STEADY AT AN IDLE

Jul 11, 2010 | 1999 Pontiac Sunfire

1 Answer

1998 Chevrolet 5.7 Vortec Problems.


Most likely the intake gaskets are bad. they will sag in the middle over time and allow a vacuum leak between the head and intake. recommend replacing the gaskets with the steel instead of plastic ones.

Jan 19, 2010 | 1999 Chevrolet Silverado 1500

1 Answer

Car idles at 2200 rpm. Slight miss at normal speed and idle. Bad MPG. Somtimes idles normally. Replaced plugs and wires. Engine light goes on and off.


Sounds like a bad vacuum leak. Check all the engine vacuum hoses, make sure none are broken/cracked/disconnected/missing.

Oct 02, 2009 | 1990 Oldsmobile Cutlass Ciera

1 Answer

1990 Ford f250 Diesel dies at idle.


could be bad glow plugs or plug heaters, faulty wiring to the coil, vacuum leak.

Jan 29, 2009 | 1986 Ford F 250

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