AirtekHVAC

Nice

Socal_Tom

Well, to the shock of absolutely no one that knows these cars at all (which is basically everybody here but me) the test shows I'm not getting a pulse on the #1 injector.

Edit - I just tried it again with a jumper on the fuel injection real way to make sure that I don't have a real problem and no change.

Socal_Tom

Cleaned the ground on the cam cover near the "O" in Porsche and ran an additional ground to there as well but but still no ignition pulse.

Edit - I should've mentioned that when I jump or the fuel injection re-way I do have 12 V so at least that part of the fuse box is OK.

Socal_Tom

Rechecked both of the grounds on the cam cover on the passenger side and while I was there figured it wouldn't hurt to run secondary grounds to both of those. Please forgive the "I just want to make sure to eliminate the grounding issues" that is going to seer your eyes when you look at this.




Still no injector pulse.

I have not cleaned/replaced the engine ground strap yet but I did run a ground from the engine to here, still no pulse.

Socal_Tom

OK - trying to plan my attack tomorrow?

1) should I pick up a known good spare green wire and swap it in?

2) time to start checking this?

Socal_Tom

Cleaned both grounds above the fuse box and reassembled with a light coating of dielectric grease and made sure they were nice and tight.

Socal_Tom

Cleaned the front engine bay grounds near the driver side headlight motor.

Cleaned the passenger side connector for the green wire.

No ignition pulse yet.

Socal_Tom

Separated the 14 pin connector and cleaned the pins, reassembled.

No injector pulse.

Socal_Tom

Check the ICU voltage, 12.06. Battery has 12.54. Not sure if the difference between the two is problematic or not, anyone know?

Replaced the green wire with a new one from 928International, got the distributor and timing back where they were. Fired up based on cold start, but no ignition pulse.

Ugh.

Socal_Tom

Found this on Pelican from JK, tried connecting another battery. No pulse.

Socal_Tom

Just noticed the tach isn't moving at all when she is cranking - does that matter?

Chalkboss

Have not read the whole thread... have you swapped out the CPS?

Socal_Tom

Hi, thanks for the response.

I have not.

Socal_Tom

Check two injectors, one on each side of the engine, and I have 12v at each pin on both sides.

Socal_Tom

Wondering if there something simple that I'm missing if it's not the CPS. Could someone check me on the relay jumper for the fuel injection relay please?

I made a three pin jumper, have continuity between all three pens, and when I connected like this I have 12 V everywhere.

Edit - for clarity purposes I have 12v always at pin #3 on the board and I am assuming that is 30 on the relay. pin #4 and 5 I am assuming are pins 87 on the relay.



When I connected like this, so it does not have power from 30 I have less than one volt with ignition on run.