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1987 Jeep Wrangler Repair Question


Topics covered: Knock sensor, Sensor, Engine.
Mileage: No information provided.

Asked on October 27, 2008

Knock sensor & engine knock

Electrical problem
1987 Jeep Wrangler 6 cyl Four Wheel Drive Manual

my knock sensor is not hooked up and i dont know which color wire goes to it so i can hook it up.


and my engine makes a knocking sound when you rev it up. i think it might be the knock sensor, but on the other hand it could be a bad main bearing but that is where it gets tough because it is a brand new motor. so i have already over ruled that it is a rod.


so what do you think?
Avatar Asked by ajax69

Answer

Replied on October 27, 2008

Hi there,

If the knock is when you accelerate quickly and not so bad when light throttle is used i feel it will be the knock sensor, if this is not rectified you run the risk of burning a hole in a piston, so get your mechanic or auto lec to sort this out before you do some expensive damage.

Mark (mhpautos)

Tiny Answered by mhpautos (expert)
27,079 answers provided