Hello all... I have been trying to trouble shoot my non-starting 914(just cranks). I figured I would start on the fuel injection system, making sure the ECU is getting the proper signals. Here is what I have checked:
MPS
Vacuum: Holds 5 Min. +
Main Coil: 56 ohms SPEC: 90
Secondary Coil: 348 ohms SPEC: 350
Injectors: SPEC 3 ohms for all injectors
Inj 1: 3 ohms
Inj 2: 3 ohms
Inj 3: 2 ohms
Inj 4: 2 ohms
Throttle Position Switch Idle Contact: Spec .5 ohms
.68 ohms
Head Temp Sensor: SPEC 2k ohms Also it is new...
3k ohms
I cleaned the trigger points (I don't know if it was a fluke, but this sparked a stummble for one second, only once)
New cap/rotor/points
Checked Spark from coil wire (Good)
Checked Spark from cap (good)
Checked Spark at plug (good)
Fuel Pump Primes when key is turned
Checked the injectors for pulse (when cranking) Good.
New fuel filter and lines (the pump is installed correctly I have checked several times
The AAR warms up if connected to 12 volt. warm closes and opens when cooled down. (not sure if it should do this if I just turn the ignition on? - doesnt seem to warm up if I do.)
New vacuum lines backed up with clamps on all connections
I can't check fuel pressure - I don't have a guage nor for compression either. Anyone in Portland, Oregon or Vancouver, Washington I can borrow from?
Maybe someone in the area that can help me out, would be very cool. I am learning alot, but this has me stumped.
I haven't had her on the road yet, but I had this baby running pretty well. I was messing around with the head temp sensor when it died. I thought maybe the wire lead became damaged within the sensor casing? Bought a new sensor with no effect. I have three ECU's and I know two work (no effect) The triggers seemed to sparked a stumble, they look ok... any way to test them?
Thank you for your help.
Tab