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Why would a '95 Cadillac Deville knock 3 to 5 times when starting but then run great?
Wiki User
∙ 7y ago
It COULD BE the electronic ignition computer. On engine startup several sensors provide information which the computer uses to to reset ignition timing [slightly retarded] for a cranking speed well below idle, to set the fuel mixture temporarily to rich, and probably some other things I can't think of right now. Any time the fuel mixture is over rich, the knocking tends to increase. It seems that one or more of the start mode adjustments is just slightly out of specification. Not far enough to prevent the engine from starting, but just far enough to allow "pre-ignition," resulting in a few "knocks," until the engine RPM comes up, and the computer has more data with which to work, and the mixture is leaned out for fuel economy and polllution reduction.
Wiki User
∙ 7y ago
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Where is the knock sensor on a 2000 Cadillac DeVille?
you have to take the dash off to get to it...
Where is the knock sensor 1995 cadillac deville 4.9 v8?
there is no knock sensor on 4.9l V8 motors
Why does your 93 Cadillac DeVille knock when the engine is accelerating?
If it is more of a ping than a knock then just try running some higher octane fuel in it. If is more of a knock it could be a rod or crankshaft bearing. If it is definitely a knock you should get it looked at right away.
2001 cadillac deville hear a knocking sound AFTER STARTING THE CAR?
have you checked the oil level??? they burn oil... also you probably need a new knock sensor... have it scanned at autozone find out what it needs then buy the part and goto the dealer and have them replace it for ya..
Can a knock sensor stop a engine from starting?
No it will not.
Would the knock sensor stop the engine from starting?
No. It only senses engine vibration/knock.
Why does 3.5L engine knock on cold start up?
Worn main bearings sometimes knock when cold starting
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