It's never just one problem is it...

[pauljmcnulty]

The S2 died on me again on Saturday - just cut out without warning

Again, that's been traced many times to the FPR but I don't know how that affects your LPG S2?

 

[tref]

At the moment, same as any other S2... I really MUST get the LPG connected! Thanks, hadn't thought of that... Would one not expect it to cough and splutter a bit before dying if it were FPR though?

 

[pauljmcnulty]

At the moment, same as any other S2... I really MUST get the LPG connected! Thanks, hadn't thought of that... Would one not expect it to cough and splutter a bit before dying if it were FPR though?

Ahhh, thought it was connected! The ones I've heard of, and actually seen do it, die as if you've just turned the key off. Worth checking, I'd say it went through a phase where the FPR was the most common fault, the same way the DME used to be the default place to look before they were nearly all changed.

 

[tref]

The S2 died on me again on Saturday - just cut out without warning (with a trailer on the back, whilst waiting to turn right on a busy road... that was fun to push out of the way!). After a short break it restarted. It did this twice. Of course, I haven't been able to replicate teh problem, it idled until hot enough for teh fans to cut in a few times... My immediate suspect is the ignition amplifier I recently fitted. The heatsink does get quite warm - just about as hot as you can continuously keep you hand against it. Anyone with an S2 know if this is normal or not?

So... I took the turbo. and that suddenly stopped idling smoothly - at least the problem with that is obvious - a large "sucking noise" and a big hole on the top of the throttle housing! Sure enough, thumb over the hole and idle is restored. As a get-me-home, anyone know what thread this is? Also, I assume it should be some sort of brass jet... anyone know what it should be called (suspecting something like "idle bleed screw") so I can see if I can get one from the OPC or elsewhere? Or, anyone here have a spare?

TIA,

Tref.

 

[Frenchy]

The part that is missing your on your turbo does adjust idle speed, not sure of it's correct title though, idle control valve ?

 

[sulzeruk]

Hi Tref, I got one of the adjusters out of a scrapper for you, PM me your address again and I will pop it in the post, Alasdair

 

[tref]

Thanks guys, Amazingly, said screw was lodged on a bracket just below the throttle housing!!! One down, all I have to do now is figure out what is up with the S2... so I may yet be talking to you about an FPR Alasdair! Let me put a gauge on the fuel rail first though...

 

[bert gear]

check the coil on the S2 typical problem to fail when it warms up

 

[tref]

Thanks Bert - is the coil on an S2 any different to any other 944?

 

[tref]

ORIGINAL: pauly

ORIGINAL: tref Thanks guys, Amazingly, said screw was lodged on a bracket just below the throttle housing!!! One down, all I have to do now is figure out what is up with the S2... so I may yet be talking to you about an FPR Alasdair! Let me put a gauge on the fuel rail first though...

Pull the wiring connector off one injector, if it runs ok on the remaining 3 it points to a faulty FPR.

I'll give that a go when I can get it to fail again![]

 

[bert gear]

coil same on all 944

 

[tref]

Brilliant, if I can't figure out how to test it, then I have no shortage of spares to swap it out and hope the problem goes away... or carry a spare and change it the roadside...

 

[tref]

Hmmm... coil is measuring 0.6 ohms on the primary, and 1865 ohms on the secondary... almost identical to the 0.7/1862 of another previously good coil I have... Is it usual for a coil to look perfectly OK cold, but still cause a problem when hot?

 

[bert gear]

Several years ago I had a 924T that would cut out after about 20 mins. Checked everything, eventually put it on an analyser, only thing wrong was slightly down on coil fitted a new coil, no more problems. Coils only seem to brake down when they get hot

 

[tref]

Thanks Bert... that is kind of what I expected... since I've had to remove the light lifting motor to get to it, I think I am going to swap it out anyway and keep my fingers crossed!!! Don't you just hate problems which you don't actually know if you have fixed it, until it breaks down again!

 

[tref]

Well unfortunately that hasn't solved the problem... Started and ran for 5 miles no problem at all. restarted and cut out... and cut out again after about 2.5 miles. I guess the problem is getting worse so eventually it will become "proper broke" and then I will be able to proper fix it. I am tending to think I have a dodgy replacement Ignition Amplifier... though I have been out and had a look at the HT leads in the dark, and there are a couple of sparks, which obviously isn't helping, but somehow don't think that is the fundamental problem... I have seen worse on a car running perfectly. I know it can cause starting problems, and misfiring, but has anyone ever had a car cut out due to HT lead problems?

 

[pauljmcnulty]

Suggests FPR again..... I'm no technical expert, but we all know just how well 944s can hide electrical issues. If the HT leads, dizzy cap, rotor arm etc. are old and knackered they might cause poor running before the sudden and total cut-out you describe. Just my tuppenceworth, but there have been so many cars with exactly those symptoms which have been traced to the FPR that it's my first recommendation. Assuming it's a new DME relay and there are no other obvious problems. [8|]

 

[tref]

Good point Paul, I had forgotten that as one on my list to check (since the check is easy). Of course, when I took it out on it's test run I forgot to take a spare spark plug with me to do the basic "is it fuel, or is it spark?" test... when I got back, of course, it wasn't misbehaving... Spare sparkplug is now in the car... but... since I know there is still a problem, and it isn't going to fix itself reliably, there is no point in taking it out without doing something that might actually solve the problem. Anyone know if any of the FPRs on an 86 Turbo are the same as on a 90 S2?

 

[tref]

Yep, that is the check I was planning to do... and forgot[] I am going to see if I can find my pressure gauge, and if I have a suitable adapter... Clarks garage is pretty clear the FPR is not the same as any of the others I have.

 

[tref]

OK... just had a look at putting my gauge on it, and of course, I do not have a suitable adapter... meanwhile, a couple of questions: What is the little ball under the cap on the fuel rail? Is that the actual sealing method? Of the two cylinders bolted to teh fuel rail, which is the FPR, and out of interest, what is the other one? TIA, Tref.