ste77

Hi

I have a 1990 saph 4x4 cos thats a lil bit poorly, When driving it normally it will build up speed no problem, but when I put my foot down the engine starts to missfire, popping as if over boosting and also the rev counter jumps up and down.

I have replaced the phase sensor in dizzy, spark plugs and even the coil.
Any ideas Please????

SaphCos4x4_Dan

iTrader: (2)

I believe the two things that cause the rev counter to spaz out are phase sensor and crank sensor. Although I might be corrected. Prob worth changing the crank sensor imo

Do you not have a boost gauge?

Eagle

iTrader: (2)

when was the last time the fuel filter was changed ?
had exactly the same issue on mine years ago ..

SaphCos4x4_Dan

iTrader: (2)

Oh and forgot the 3 multiplugs on the bulkhead, give em a good clean out....

charlie luciano

iTrader: (3)

My car had this problem and it turned out to be the engine loom that was fuckered,

process of elimination with any annoying mis-fire, start with the cheapest things to replace 1st


Luciano

ste77

Cheers guys, Dan al try the crank sensor next, been threw all the multi plugs etc.. Eagle am sure a changed the fuel filter last year but for the sake of £20 a mite aswell do it again. Charlie am hoping its not the loom but obviously al look into it if a get no joys. Will keep you's posted. Thanks again Steve

ste77

Forgot to say Dan I have a boost gauge nd al seems normal with it, running at 0.9bar ish

ste77

Quick update, changed the ignition Amplifier module and the crankshaft position sensor and my babys back Cheers again guys