924Board.org

[elitejaso]

Hey guys haven't been on for a while to update my cars problems but feel like its time to get stuck into it again.

Last time I posted my car was running fine for the first 5 mins or so after startup and then would eventually backfire itself to death and not start again till it was all cooled down again.
With the help from u guys I went through and checked/replaced everything that could be causing this problem from the fuel system to anything electical, replacing the alternator, new battery, new earth cables the lot.

It was still up to its same old tricks and I was narrowing it down to a dodgey impulse sender (flywheel sensor) brought up by 924racer.
Would u know that this part is nla and would cost around $500 from any porsche wrecker. Just couldnt convince myself to fork out that dosh on a second hand sensor that may or may not be my problem.

On my last test drive where I was fiddling around with the sensor I didnt get out of my street because i had coolant coming out the exhaust
Having just installed a new cometic gasket I put it down to a stuffed head which was enough reason for me to hide the car in the back and keep it out of sight.

Heres where Im at now, just got the rego reminder from vicroads for a cool $500 and need to decide where to go with this car. Keep it on the road and just keep at it, or turn it into a long term project car.
Problem is I currently dont have a car at all as my backup car (91 ford laser) was blown up by my brother
When I try to start the car up now it cranks but I have no spark at all.

Got in touch with a porsche wrecker in perth the other day to see if he had a cheap sensor but I was out of luck.
Having worked on these cars alot in the past and owning one himself said that it could yet be the ignition coil or ecu.
So will look up the numbers 2moro and he will send out a working coil and ecu to see if that is my problem.

He also mentioned that like my car once you start shaving the heads your asking for trouble, my car used to run 2 gaskets with a decomp plate which lasted over a year of dailing driving before the gaskets went. Followed by a new single gasket which lasted a month and now the cometic gasket (which I am not yet sure is stuffed).

Looks like I may have bought a lemon, but this car is my first porsche and it just has so much character that I dont think any other car can fullfill (even with my mate trying to get me to join the dark side and get me into a skyline.

Just thought I'd get this all off my chest and will this time keep you all updated.

Cheers
Jason
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1981 924 turbo (daily driver)

[sbarc]

I can't offer any helpful mechanical advise.

Keep your chin up and don't let it get you down. Those series II 924 Turbos are rare cars and getting more and more rare each year. Don't get any silly ideas about selling it. You will regret it if you do. I do think you need to find yourself a daily driver and keep the Porsche as a second car.
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1981 931 (Canadian car)
1981 931 (US car)
1990 928GT (ROW car)
1991 Toyota MR2
1989 Toyota MR2 Super Charged
1985 Toyota Supra
1973 Triumph GT6
1971 Opel GT

[reilly525i]

keep faith broseph. I was right there where u are a couple of months ago and when u get that thing going good again you will remember why you started the project in the first place.
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"There are no kings inside the gates of Eden"

80 n/a 924.
76 alfa romeo spider
e34 525i.
xj6 vanden plas
vintage Sunbeam 6 speed bicycle

[Smoothie]

I'm sure this was mentioned somewhere in your previous threads, but your symptoms are a good match for a common 931 S2 problem with the rectangular 12 pin connector to the DITC box below the dashboard. It's the problem that originally had me searching the web for an answer and found me this site. For me, a simple unplug-replug of the connector fixed the problem, and that fix would be good for about a year each time. Eventually, I disassembled the connector and very slightly squoze each female pin to improve the connection. That was several years ago and it's been good since.
If you're not so lucky, and the problem isn't there, it's somewhere else in its' associated wiring or other ignition wiring. Try also unplugging-reconnecting the crank sensor connector at the DITC box, the ignition trigger unit at the front-left wheel well, and white multi-wire connectors near the coil.
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"..it's made in Germany. You know the Germans always make good stuff."


'82 924T, US version, dark green metallic, 5 speed Audi 016G gearbox

[ideola]

+1^
It's absolutely worth a try to clean up and slightly "squoze" (as Smoothie puts it) each of the female pins in the main DITC connector. Get yourself some needle files, sand paper, and an Emory board. Check all of the connections Smoothie mentioned, and try cleaning them up while you're at it. Also make absolutely 100% certain that you don't have any worn or loose connections at the battery positive and negative posts. You might be surprised how much that can affect the function of these early electrics.
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erstwhile owner of just about every 924 variant ever made