Josh B

Ok - so yesterday I got in some good reference sensors from Plyhammer - thanks! Here are the steps of what I did and the results

1. Installed sensors - factory harness not marked so guessed at connection
2. Installed coil
3. Installed battery
4. Installed known good DME relay
5. Car turns over but won't fire and cluster isn't working
6. Did a fuse audit - correct fuses in correct spots and key ones not blown
7. Compression tester on one and two - results around 125 each
8. Pulled the cap off the fuel rail - when starting no fuel
9. Swapped out the fuel pump for a known good one and tested - it is working on car and fuel pouring out of rail
10. Pulled spark plug and left laying on intake - have spark
11. Still won't start
12. Pulled 3 and 4 for compression test - spark plugs dry - don't smell like fuel - results 125 to 150.
13. Swapped out two ignition relays and now cluster working - tach bouncing - still not starting
14. Too dark to do anything else

Talked to Albert last night and we think it is either a bad ECU or gummed up injectors. Tonight I am planning on pulling the fuel rail to see if it the injectors are working. I have some turbo injectors - I could put one one to see if it is a bad ECU or the injectors.

The car had that old fuel smell in the engine bay - pulled the ECU and it looks fine - have not opened it up yet. Bottom of the battery tray is fine.

Any ideas and anyone have a spare ECU for sale and spare injectors? Maybe someone local in Atlanta?

potent951turbo

Josh, I know I say it all the time but I would definitely check the fuel injection wiring harness. It sounds just like one of my many bad harness experiences.

Josh B

I thought of this but the harness looks good - you know on an NA they don't get so hot and brittle. I suppose it is still something I should keep in mind. Thanks for the advice.... You gonna have that white car together in time for the fest?

marky522

While cranking tap on the injectors I have had it free them up multiple times. Worked on my current parts car that sat for five years.

blown 944

+1

Josh B

Just with the shaft of a screwdriver - like a light tap?

blown 944

light to medium with some sort of metal

marky522

I just used the hadle of a screwdriver and tapped a few times then moved to a different injector. Make sure your using fresh fuel and have a jump box or charger keeping the battery full.

rattlesnakeracing

Josh B, I looked at S.C. 1 & 2, but never saw a reference to the year. I know it's not your 951. What ECU number is in the 944?


.

Josh B

1985.5

tod84944

Josh,
Go to autozone and get a noid light. Plug into each injector plug and make sure you are getting signal. If so, do as instructed above, tap on the injectors while someone is cranking the car. If you have all injectrors clicking loudly, but it still won't start, unplug one injector, and try then. Also.... unplug the vacume line to the FPR, and make sure fuel does not come out of it. If so, the FPR is bad, and causing the injectors impedence to be too high, and making the dme advance everything up.

Josh B

I pulled the rail and wasn't getting any fuel out of the injectors.

Pulled the ECU and cracked it open and everything looks fine I think. Just for good measure I sprayed some wd-40 on the back of the circuit boards and scrubbed them with a tooth brush and dried it off.

Hooked that up and still no fuel from the injectors. I put one of my turbo injectors on there and I am getting fuel from it.

The injectors must be really clogged up - soaking them in gasoline now - anything else I should try?

tod84944

You can back flush them. They have a little screen at the top. I can explain better over the phone, give me a ring, you know the number!!

Josh B

She lives - stuck/clogged injectors.... more details later