I would be looking more into the inertia switch as well. Could just bypass it to verify that is the issue
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HEI, External Coil, and No Start
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Just because the relay clicks doesn't necessarily mean its good. Might want to try another relay if you have a spare or if your daring you can try jumping it at the relay to see if that kicks the pump on. If that is still a no go, well I guess I would start taking interior trim off and folding the carpet up and tracing all the wires and making sure they aren't damaged physically.
Have you used a multimeter to test voltage at the pump?
Could also take a multimeter, put it in continuity mode/diode mode/voltage drop mode whatever you want to call it. The mode that beeps when you touch the multimeter probes together . touch whatever you have open on the ground wire coming into the pump and touch the other multimeter probe to bare metal. if it doesn't beep your ground is broke somewhere.Last edited by J_Unit; March 21, 2017, 03:32 PM.
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Originally posted by branscoset View PostDoes the fuel cutoff light come on the dash when cranking? If so the inertia switch or whatever is left of it is bad.
Originally posted by 93lazerpgt View PostI would be looking more into the inertia switch as well. Could just bypass it to verify that is the issue
Originally posted by J_Unit View PostJust because the relay clicks doesn't necessarily mean its good. Might want to try another relay if you have a spare or if your daring you can try jumping it at the relay to see if that kicks the pump on. If that is still a no go, well I guess I would start taking interior trim off and folding the carpet up and tracing all the wires and making sure they aren't damaged physically.
Have you used a multimeter to test voltage at the pump?
Could also take a multimeter, put it in continuity mode/diode mode/voltage drop mode whatever you want to call it. The mode that beeps when you touch the multimeter probes together . touch whatever you have open on the ground wire coming into the pump and touch the other multimeter probe to bare metal. if it doesn't beep your ground is broke somewhere.Last edited by Venchman; March 21, 2017, 06:28 PM.93 GT-ZE, Hotshot Headers, Greddy SP2, Eibach lowering springs, Magnecor's 8.5mm competition wires, AWR Mounts, Spec Stage 1...
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Originally posted by Wavoz View PostTo me it seems that your crank position sensor is bad, i had similar issue, fuel pump worked fine when running it in diagonstics box. The thing is your ECU wont start the fuel pump if it gets no signal from crank position sensor.
New Issues: now the sputters and backfire/misfire/popping at around 3000 rpm; it completely losses power at that point. Would that be the coil failing? Here is a video of it. Seems like everything is going wrong at a really bad time.Last edited by Venchman; March 22, 2017, 09:31 AM.93 GT-ZE, Hotshot Headers, Greddy SP2, Eibach lowering springs, Magnecor's 8.5mm competition wires, AWR Mounts, Spec Stage 1...
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Originally posted by Venchman View PostI wouldn't get spark with a bad crank sensor, correct? I am getting spark and the motor starts (after rigging the pump to work).
New Issues: now the sputters and backfire/misfire/popping at around 3000 rpm; it completely losses power at that point. Would that be the coil failing? Here is a video of it. Seems like everything is going wrong at a really bad time.Last edited by KLZE Porsche; March 22, 2017, 09:50 AM.Success is a measure of determination!
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Originally posted by KLZE Porsche View PostWhen you dropped the tank and swapped the pump -how did the filter sock look? The 3000 RPM problem can be a bad ECU. Maybe you just have a bad ECU altogether. Got a spare to try?
Update: changed the ecu and same stumbling problem. I'm going to make another video of it.Last edited by Venchman; March 22, 2017, 06:03 PM.93 GT-ZE, Hotshot Headers, Greddy SP2, Eibach lowering springs, Magnecor's 8.5mm competition wires, AWR Mounts, Spec Stage 1...
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Have you verified that you are getting the proper fuel pressure to the rail? Logic says new pump should have correct pressure but just a possibility.93 PGT CAI, Egay headers, high flow cat. 2.5 mandrel bent with Borla, Yonaka coilovers,19mm rear bar,CM 12lb fly and stage 2 clutch
She tends to argue with me daily...yep it's a Probe
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Originally posted by 93lazerpgt View PostHave you verified that you are getting the proper fuel pressure to the rail? Logic says new pump should have correct pressure but just a possibility.93 GT-ZE, Hotshot Headers, Greddy SP2, Eibach lowering springs, Magnecor's 8.5mm competition wires, AWR Mounts, Spec Stage 1...
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No, your not testing for compression right now, just fuel pressure. You need something like this. http://www.harborfreight.com/fuel-in...ter-62623.html
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Originally posted by J_Unit View PostNo, your not testing for compression right now, just fuel pressure. You need something like this. http://www.harborfreight.com/fuel-in...ter-62623.html93 GT-ZE, Hotshot Headers, Greddy SP2, Eibach lowering springs, Magnecor's 8.5mm competition wires, AWR Mounts, Spec Stage 1...
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