right in my cossy today car felt a little flat and jerked a little when you come of the gas and back on agine it will do that in any gear and any rev on boost my car was like empty no power and boost was all over the place .I un plug the brown sensor on the inlet manifold the charge temp sensor and all the above problem sorted could it just be that sensor and or is it some thing else coz the car is perfect with out it

 

What model Cosworth are we talking about?

Your diagnostics *suggest* that may be the fault, if not the sensor, then perhaps the wiring to it. I wouldn't drive it about with it unplugged though.

 

Billabong
its a escort cosworth big turbo with a l6 ecu .surly if the wiring to the sensor was no good then It will have no affect if I un plug it or not but when I plug mine in there difference so wiring is defo ok I believe its sensor but I have never heard of them going

 

Have the main loom plugs been sorted (under passenger side bonnet vent). I had something similar on my old EsCos prior to having the wires sorted - basically moving the wiring slightly changed the temp' value sensed and altered fuelling.

Was diangosed using a Pectel monitor, although the corrosion was plain to see in the loom plugs, once taken apart.

Not too sure on the L6, but ECU possibly reverts to a safe value when a sensor is unplugged (I know P8 has a limited operation strategy LOS when a sensor goes down)

 

Billabong
what do you mean sorted and can that be my problem as recently i have had the plugs slight cliping my wiper arm as was going to move it futher down

 

It's a VERY common fault on the EsCos for the main loom multi-plugs to corrode, esp. given where Ford positioned them - a common fix is to carefully cut out the corroded wire and make good, solder & heatshrink.

The Sapphire had these plugs on the bulkhead, at the back of the engine bay IIRC.

Basically, on my old Cos, just lifting the plugs up gently showed a massive temperature swing on the Pectel Monitor. ECU thinks charge air is very cold, it adds more fuel....

Is your loom standard from factory, or has loom been changed?

 

its converted from smal turbo to big turbo the plugins are at the back of the bulk head its sorted of near the battery and wiper arm

 

Billabong
were are you

 

Well if the wipers have been snagging the wires, they deffo want investigating.

Are you saying the multi-plugs (there's two from memory) have been discarded? If not, that's very possibly the problem - be careful if you take them apart (push and clip fixing) as if heavily coroded, the pins may just crumble away....

It may also be worth checking the ECU pin configuration - they *may* be slightly different on a P8 compared to a Level 6 ECU - buggered if I can remember though for certain.

 

have you got tha tblue one on the road then.

 

Also, what TPS are you using? Again, I'm not 100% sure if the L6 can run 4x4 TPS or not, sorry.

 

Billabong
will cheack that tomorow for corrosion if it isnt that then its got to be sensor that i unpluged

 

think you need an L8 for the 4x4 one,then you have to swap the wires around.

 

Billabong
i am using the 2wd cosworth tps with the wires swtiched round

 

I *think* that's ok then, as you have the correct TPS for the ECU, and you've swapped the outer two wires. Most people go the other way, and convert up to L8 & 4x4 TPS.

 

Billabong
ok will cheack for corroision on the wires and then change sensor if no corrosion that i can see than would i still be worth chopping out and soldering it togather

 

It's the first mod I'd personally have done as a matter of course, on an EsCos, they cause so many problems. It's quite fiddly though, and I think there's a fair few wires in there.

If you KNOW they aren't causing a problem, and are in very good condition, you could pack the connectors with Vaseline (it's non water based so shouldn't affect the terminals/pins) and should protect them from water ingress in the future.

 

ahhh escort cossy wiring

gotta love ford designers

 

right update .cheaked the conections and found no corrosion at all looks like new moved them any ways and .pluged the sensor back in today and it was ok for about 2 runs then car started jaulting agine when you change gear or come on and off the gas .when your flat out as the boost comes in its like its blowing the spark out as it starts to pick up .all this go when i un plug the sensor could the sensor be getting a fulse reading from anther sensor or is it direct to the ecu

 

up

 

For the sake of the cost of the sensor, change that, but if you can take it somewhere with a Pectel monitor, they may well be able to diagnose within a couple of minutes.

Can't see that there'd be interference from any of the other sensors, it's direct to ECU, albeit via those nasty, problem causing multi-plugs.

I know what it's like, I had an intermittent problem with MAP sensor AND ECT sensor at the same time a couple of years back - was a piece of cake to find with the monitor (at least when they intermittently went wrong).

If you can get it on a monitor, even if it does show the ACT sensor as faulty - see what happens when you gently move those dreaded multi-plugs, just to be 100%

 

Billabong could the problem i have be some thing else.
tdc
air temp sensor
map sensor
colant temp sensor
phase sensor
spark plugs
cap &arm
leads
ignition amp
coil
ecu
is this all the sensor that can be at fault all of the above was new and changed about 7 month ago

 

mate ive got a load of sensors you can borrow, when you got time just pop round mine


there all at me garage though but ill make the trip for you if ya need

 

b19bal
thanks m8 hope fully its just the brown sensor on the inlet .will keep you in mind :top:

 

b19bal
thanks m8 hope fully its just the brown sensor on the inlet .will keep you in mind

 

like billabong says...get it checked with a pectel monitor,this will tell you what sensors,if any ,are faulty.

can go from there then.

 

dave cos4x4
they cost Ł250 will defo get one in a few month but for now i need a fix

 

no...don't buy one,take it to a place that has one.

i know Steve Scott has one a A1 Rallysport.

is that too far.

 

dave cos4x4
its about 1 hour drive from me will change sensor first then go from ther .what about the collant temp sensor could that casue my problem

 

ive got a spare one of them mate if ya need one

if ya wanna pop round or i can get it to ya tommorow when im at work mate

 

b19bal
i wouldnt mind were abouts do you work agine i could try and come see you ther tomorow

 

don't think the coolent temp sen will cause them probs.

 

stratstone in hainault mate


look for the esort cabrio covered in masking tape,,,,,,,,,, or on tall axle stands,,,,,,,,,, or what ever else the tehs do to my car when there bored


seriously they covered my car in 6 rolls of masking tape twice so far as they felt they had to cover it incase any customers think they employ someone who drives a car like that

 

b19bal
i think i will give you a miss then :

 

you aint far from chigwell are ya mate