Having problems with your 1992 Buick LeSabre ?

.why does my moter knock while idling but stops knocking when i rev the engine

Posted / edited by AnonymousUser on : 15-01-2018

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Repair Help & Product Troubleshooting for 1992 Buick LeSabre

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.why does my moter knock while idling but stops knocking when i rev the engine


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MY TRUCK IS A CHEV Z71 1998 WITH 5.7 ENGINE THE WHOLE STORY IS THIS ...IT STARTED RUNNING ROUGH WHILE I WAS DRIVING HOME ON THE INTERSTATE IT WOULD NOT TAKE GAS BUT WOULD IDLE AT STOP LIGHTS.I CHANGED THE PLUGS AND WIRES...NO HELP...HOOKED IT TO OBD2 DIAGNOSTIC AND THE CODE WAS P0452 I CHANGED THE FUEL SENSOR ON TOP OF THE TANK...NO HELP..CHANGED THE KNOCK SENSOR...NO HELP SO NOW I DON'T HAVE A CLUE IDLES OK BUT SHAKES BADLY WHEN IT IS IN GEAR. IT WILL REV AT 3000 RPM AND I STILL SMELL GAS.


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I am currently experiencing engine idle problems, i have recently purchased the vehicle and the engine has been fine until now. When i stop at junctions and the engine is idleing it seems to now and again drop so low that the engine seems it is about to cut out and it jus revs up and down erratically between 400 and 900 revs.


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Hi, I have a weird problem that suddenly developed. 1996 e36 318i BMW (manual) 250,000 kms (not sure if the engine has been reconditioned in the past), should be the M43 engine. The exhaust manifold gasket blew and the car stopped idling. The gasket has been replaced but the idle problem remains. The car starts fine but won't idle and it does not work under light acceleration almost like fuel is not getting through. To drive I have to push down on the accelerator pedal and keep the revs


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Hello, I have a toyota hiace 06 plate d4d 2.5l common rail injection, the engine management light comes on and puts the van into limp mode when the revs are low, usually when I'm in slow moving traffic or stopped at the traffic lights. I've took it to toyota for diagnostics and they say its faulty injectors and quoted 2000 grand to replace them. The thing is, when the revs go above idle, from about 900rpm (van idles at 790) the van runs fine with no probs. So my question is, can the idle on t


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Electrical warning light comes on when I stop and the engine revs drop to nil then up and down, sometimes cuts out,if i rev the engine a c ouple of times the warning light goes off and the engine idles ok.


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I have a 1989 Oldsmobile Cutlass Ciera with the 2.5L Iron Duke engine. It sputters when I rev it up just a little and sometimes it idles up and down. The only way I know to stop it idling up and down is to shut the car off then turn it back on then it'll rev a little high (1400 rpms) then the rpm's back down to normal (800ish rpms). i was doing some wikipedia research and they recommend that I replace the map sensor egr valve (doesn't stick but may have weak springs) and oxygen sensor. I dont


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On idle there is a loud knocking noise from the engine. When drive is engaged(automatic) the knocking ceases, or if revs are over 1100 also. It drive normal on the road except when ideling. My mechanic rekons that the crankshaft is split and that a new engine is needed..


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I have a 03 tiburon gt 2.7 and when you hit the gas the engine revs up to about 3100rpm for about 10 secs the drops down to about 1500 and surges up and down form 1500rpm to 2000rpm then it will idle normal. also when you go to shift or come to a stop the car revs up too. the car runs great has plenty of power but has the idle problem. i have replaced the tps and the iac. i dont know what it is...


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