ok,

Question 2...When i get in to start it up, i have to turn the key on the "on" position and i have to wait (depending on the temp. outside) from 15 min. to an hour or so when its really cold out for the fuel pump to kick on...then she,ll start...any sooner and it just cranks. Changed the pump and relay. Workin on the postive cable to the power dist. box. Any suggestions? 4.0 automatic

 

Try resetting the ecu.

 

tried the ecu reset....no diff....

 

Have you checked all grounds and other connections? A little off topic but how old is your fuel filter.

 

Check the fuel pump relay, you could bypass it to see if thats it. Coach

 

new pump....new relay....even bypassed...no change

 

also new filter and new pressure regulator.

 

did you check the ballast resistor on drivers side inner fender for voltage on both sides

 

replaced ballast resistor last summer and it did not work either...would the ecm maybe cause a loooooong delay to reach the fuel pump...I also started looking into the positive cable thinking it might be a fusable link?...any thoughts?

 

or maybe the brain under the dash?....its just getting pretty expensive....shoulda went to that ati or iti mechanic college..lol

 

does it respond faster im the warmer months

 

when you first turn key on does the pump prime up you no run for a second or two

 

What is this gonna do?


Just a thought, instead of tossing more and more money and time into this truck why not take it to the nearest stealership and have them run diagnostics on the truck?

I took my fiance's TJ to one recently. To me it was worth it. My time is worth alot to me, and I wanted it done 100% right, no questions asked.

So that $100 was well spent, adn I didn't have to waste alot of time diagnosing/playing with incorrect parts. Went right to the problem and fixed it.

Just a thought.

 

did you check for voltage maybe there is a voltage prob to this

 

yes...it responds faster in warmer weather....no free..pump does not prime up at all for some time...and gee o dee, i am about ready to hand it over to the auto elect. shop for some diag.....just thought i might get some answers here first....thanks all.