Question about 1990 Chevrolet Suburban

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90 suburban miss' at cruise but notat idle

Miss' pops and jerks at around 1500 rpm

Posted by Anonymous on


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  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

  • 3600 Answers

SOURCE: i have a 93 1500 silverado with a 350 5.7L tbi.

try pullingthe vac. line ofthe fuel regulator plug the hose then try it if it runs ok then replace the fuel regulator.

Posted on Jun 22, 2009

  • 369 Answers

SOURCE: 1990 chevy 1500 4X4 5.7L

With that kind of symptoms you should be displaying a check engine light have the codes extracted and get back to me let me know what codes and I will give you a better idea of what is wrong with your vehicle.

Posted on Jan 10, 2010

  • 1 Answer

SOURCE: 2002 4.3 vortex chevy got a rough idle but smooths

Check the distributor gear. Is it a random misfire code? I am fighting this issue myself. My truck eats up the distributor gear and I get random misfire codes and Cam to Crank positioning sensor codes, all related to timing issues.

Posted on Jul 31, 2010

  • 1 Answer

SOURCE: 97 k1500 5.7 liter vortec misses on cylinders 3

I have had continuous missing issues on my 1997 Silverado after i had a new engine installed 30,000 miles ago. Today I purchased a new gasket for the EGR Valve and removed it. The mechanic had re-used the old gasket when he replaced the engine and cut corners to save $2.00. I found he had installed the EGR bass-ackwards causing my check engine light to stay on and the engine always to miss. Engine runs GREAT now

Posted on Nov 20, 2010

  • 1 Answer

SOURCE: my 99 suburban has a jerking feeling when i barely

Mine was a crank shaft sensor located by the distributor.If u have a parts house that run free diagnostics it can tell u.

Posted on Sep 17, 2011

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1 Answer

2003,dodge,ram,1500,gas 5.7,cuise is surging 50 t0 200 rpm constantly,will make u sick.only on cruise.

All of the cruise circuits are in the pcm. If it doesn't jerk when cruise is off, the problem cannot be the servo. However, it might not be the pcm either. It could be caused by the controls on the steering wheel or the clockspring in the column. This is where they should be troubleshooting.

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Test it on idle with ALL electrical on full force.
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If RPM remain the same then IAC is question.

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Plz Check Camshaft And Crankshaft Position Sensors

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2000 suburban 1500 right before air on and right before it turns off enigene drop to about 350 rpms

correct rpms should be ~800rpm ac off, and ~1000 rpm ac on.
idle up switch is broken or vacuum hoses attached to idle up switch has leaks.

Jan 31, 2013 | 2000 Chevrolet Suburban

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A/C front is blowing warmer than rear air. A/C blows cooler at approx 1500 RPM but blows hot at idle. Checked low side pressure of 75psig. Not sure if this is a compressor problem??

As a mechanic, the first thing I would do is find out what the high and low pressure readings are at idle and at 1500 RPM.
Could be a blockage in one of the lines, or a blend door problem, or lack of air flow thru the radiator among other things.

Jul 30, 2012 | 1999 GMC Suburban

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Rpm hunting

check for a vaccuum leak this is where i would start if it rolled into my shop. possibly a PCV valve sticking or a hole in the hose, this hose should run from the valve cover, or crank case and then to the intake, or carb.

Apr 25, 2010 | 1998 Isuzu Trooper

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99 suburban missing only at idle

Have you checked the fuel pressure? You may have a sticking fuel regulator, causing too much fuel at idle. Since it works fine off idle and cruise I would look there.
RPM Northwest

Jun 10, 2009 | 1999 GMC Suburban

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