Starting Issue

OP, try Eddies method with a fuel pressure gauge on the rail. You should get 58 psi. If not, then you aren’t getting signal to the fuel pump. This will at least start pointing you in a direction.

Have you tried calling John at RPM and asking him.


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mchrisovergis said:
Exodus Jeeps said:
OP, try Eddies method with a fuel pressure gauge on the rail. You should get 58 psi. If not, then you aren’t getting signal to the fuel pump. This will at least start pointing you in a direction.

Have you tried calling John at RPM and asking him.


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Correct, with Eddies method I was getting no fuel pressure. Hence why I didn’t get the engine to turn.

Next, I tried to jumper the fuel pump and am getting no power there either. 🧐

I’ve tried not to call Jon yet as I know he is currently vacationing with family. Otherwise he is ALWAYS super helpful no matter time of day.

I may just shoot him a text for an idea. 🤞




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And you’ve checked all the fuses and relays on the GM side?


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Exodus Jeeps said:
mchrisovergis said:
And you’ve checked all the fuses and relays on the GM side?


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Update, found a loose wire connection in main TIPM wire bundle. Fixed it and fired right up. Ugh... what a nightmare. Thanks to all for the help in troubleshooting.

Also, Jon from RPM not only answered my text,
But also called me while on vacation with his family. Spent a nearly 30min on the phone with me trouble shooting the process of elimination. Literally not enough good things can be said about RPM extreme and how well they support their products


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