Questions & Answers for: GMC motor surges

99 gmc sierra surges while idling in gear what can i look for clean the EGR valve and also the idle control motor valve Where is idle control motor valve

van surges/vibration when vehicle is idleing you need to change your motor mounts, they aren't that expensive, just the labor. 

Motor seems to surge up and down when cruising Seems to idle up when not under throttle between 40 to 50mph First check for a vacuum leak.Check all vacuum hoses for cracks or burns then check for ...

...a red hot exhaust.....smoking hot! What causes an exhaust to get red hot when you try to rev the motor up? Just changed the fuel regulator....had a gas surging problem. Valve Timing,Ignition

surges between 1000 and 2500 RPM. Tried changing both the throttle body and the throttle control module. Any thoughts? I can't say without more info but this could be normal. When you are descending a

...motor and disconnected computer behind dash reconnected everything now truck won't run . why Did you disconnect the battery before you disconnected/ reconnected the under dash computer? These devices ...

surges sometimes when cold and when warm. When driveing down the side streets and on hiway. When idleing and in reverse. Can you Help? fuel issue the lbz motor injector pump may be sucking air if over

...You could set your watch by it, the cycles were so consistent. Please advise. Idle air control motor. Clean it or replace

Why won't it rev? 1997 GMC Jimmy 4.3 L Vortec - Discussion on Topix www.topix.com > General Motors Aug 17, 2009 - I have a 1994 S10 Blazer with 4.3 Vortec. ... Sometimes runs fine, or it barely moves ...

...surges jumps up and down a few hundred rpm. * Blower motor * A/C control * Actuators How do I test these and where else should I look? If the operation of your A/C and heat is causing your engine to ...