trouble code 52 corolla '94 1.8L

[artmirza]

please help

runs great but then suddenly hesitates/jerks. even dies at idle. trouble code 52 comes and goes while driving. new distributor with new cap, wires, plugs, rotor, fuel filter, pcv valve.

trouble code 52 knock sensor does that mean sensor is bad? or is the jerking turning on trouble code. should i go ahead and replace knock sensor?

already spent $600!! knock sensor will run over $200.

[Steelballz]

I would say there is a good chance the "jerking" causes the knock sensor to go off...but this will change the fuelling etc to stop pinking.

I would have a look at the engine mounts on the car first, these are actually a relatively common problem on the gen7, the front or back mount usually wears out...check that, it would cause excessive movement of the engine, setting off the knock sensor...and when that sensor creates a signal for the ecu, it will change the fuelling to get rid of the "knock" (actually just engine moving), and the underfuelling will cause jerking.


worth having a look at first anyway