1998 Chevrolet Blazer "bad idle" Questions

...bad idle air control solenoid or more likley a blown throttle body gasket. to test fro a blown gasket, with engine running and cool spray carb cleaner or brake cleaner around base of tb were it bolts ...

...idle and a bad motor mount it would shake, I know theres a few things I'm missing but,.. I have a major Headache atm so I'll get back to you with some more, when i can think better. :) Check the ...

does it idle up and down all the time even when its just sitting there idling You may have a bad idle air control valve, I would also check for a vacuum leak, from a vacuum hose or a broken vacuum tee

...idle sensor is bad, or you have a vacuum leak I would start by checking your IAC motor ( idle air control ) that is what ,maintence the idle speed of the engine, IAC screw into the side of the ...

...idle air control valve failed. the engine could have severe misfire condition caused by low compression cylinder.could have clogged fuel injectors.bad spark plugs or faulty ignition coil.restricted ...

...bad at idle often stalls, runs ok engine misses bad at idle often stalls, runs ok at speed though. Checked codes from ecm gave us code 12. Don't have a book yet so we don't know what code 12 is....94 ...

idle -bad fan would give u a vibration that could feel like it was running rough this is not that uncommon, it is cauised bu good old metal fatigue, and yes the fan clutch must be replaced, also check

...idle. Bad sensor? Vacuum hose? In most cases problems with idle speed involve the idle air control valve or a dirty throttle body.  The computer controls idle speed by how much air is allowed ...

...idle control valve that may have gone bad or it just may be a dirty or stuck EGR valve. The scan should let you know. P1505 Idle Air Control At Adaptive Clip P1506 Idle Air Control System Over speed ...

Comes down to idle only after a complete stop, no petal or cable sticking. may be bad idle control sensor.