can you get these in the the wrong way round or swapped over alltogether...., i wouldn't have thought so, but there aren't many things left, when revving at about 3K and above it splutters and collapses and the revs drop back a few 100...

big turbo escos btw..

 

if your talking about the CAS and the Phase sensor plugs, then yes you can get them the wrong way round...

I did exactly that and had the same sypmtoms as you describe....

 

Dave, you can get these the wrong way round, because this happened to me. After I rebuilt my engine, it would rev to about 4K out on the road, then backfire and go like a dog. I immediately switched the engine off, and looked under the bonnet for the obvious faults, but couldn’t find anything. Once started again it would drive OK, but when reaching 4K the same thing would happen. I tried everything to try and diagnose the problem. I didn’t even dream that I could have transposed these plugs, as I thought that they would have been designed not to. I eventually sent my Escort Cossie to Power Engineering to diagnose on their rolling road, and they found the problem. I had transposed these two plugs, and once switched round, car went like a bomb. A problem I’ll never forget.

Cheers
John

 

cheers guys ,will give it a go and report back, the only thing that throws me on this is that one plug and socket is white and the other is black, so obviosly you put them back together by matching the colours up......

 

right.. ive swappd them over and....... it cranks but wont fire up. so i swapped them back and it starts first time but with the 3.5K splutter again.

ive checked the voltages of the ECT, ACT and MAP sensor and these read what they should back at the ecu at idle when cold and hot and when not running, all ok.

any more ideas..? would incorrect gapping of the tdc and/or phase sensor cause the same problem...?

 

tdc= 0.6mm
phase = 0.2mm - both as measured.

any more ideas guys...?

 

dave the 2 plugs your talking about are the crank sensor and knock sensor plugs.and she defo wont start with crank sensor in the wrong one .your clearances are correct,
the symptoms you discribe are more than likely a sensor failure,the p8 ecu on the big turbo escort cozzy has a built in protection that causes the engine to limit and splutter at about 3500rpm for a bad signal or sensor failure. its to protect the engine,sometimes you can drive through the 3500 barrier,you may even get it to happen just by reving the engine to this rpm without moving.
have seen this before,happend to a mate after a turbo change,we scratched our heads and thanks to stu,s wisdom we realised it was the lambda probe,once replaced,problem sorted.
so start checking them all,and you may find the cause

 

ive checked the ECT, MAP, TPS, ACT voltages when hot and cold, all ok, ive fitted enw TDC and phase sensors just before i did the head gasket anyway.

have to admit, the lambda probe i havn't checked, does anyone know what voltages it should have back at the ecu when the ignition is on..?

 

just found this....


A: Antifreeze Contamination

Antifreeze in the exhaust will attack and destroy the sensing element. A leaking head gasket commonly causes antifreeze contamination.

is exactly what mine looked like when i took it out when i did the headgasket cos it was leaking coolant into the combustion chambers, i see a light at th e end of the tunnel...

should i get a varying voltage of 0.2-0.8vdc across pins 1&2 if its working...?

 

dave i,m not sure about the voltages.see if you can get a lend of one to try it out as new ones are expensive
good luck

 

just found one for 70 quid inc vat deliverd, just need to chop the multiplug of the old one to connect up the new one. its a titania type i believe..

 

make sure the wire connections are a good job as a bad joint with high resistance could be seen as a fault

 

yep yep, i solder and heat shirink all my connections before taping them back into the loom