Recent content by HDTech9791

It looks like replace the fuel pump relay has fixed the the issue I was having some of the with the pump powering intermittently. Now to begin with some of the other problems.

I didn't know about the check valve in the pump thanks Tim_MN but this still doesn't tell me why sometimes the pump kicks on when the ignition switch is keyed on and sometimes it doesn't. Hopefully, I get a chance to work on it this weekend.

Okay starting to get this narrowed down. When the engine just cranks the pump is not priming so it's intermittent. Sometimes when the the key is on the pump primes sometimes it doesn't. When the vehicle starts and runs rough I'm assuming the pump is running intermittently. So what is controlling...

Most of the heat when towing comes from the transmission, follow Tim_MN advice and get a transcooler if you plan on do a lot of towing.

I'm not Sure I'm Clear on what's going on. So you have to turn it to start then manually turn it back to run for it stay running?

Alright, A little update. Now the cranks won't start has turned into a sometimes it will crank and not start other times it will crank, start and run rough. I managed to get a fuel pressure gauge on it tonight while it was running rough and the fuel pressure was all over the place. When the pump...

That would work for the short term but I would like to fix it, I'm kinda anal like that. I was think that this maybe part of just cranking problem, or it could just be the resistance of the sending unit is off.

I Just bought this Cherokee 3 days ago, it is super clean and runs good. It had a few little problems but no big deal right? Well...........Problem One is sometimes it will just crank and no start. When it does start it runs great. I figured it was the CPS so i go and pick one up and put the new...