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Thanks. This sounds exactly like my problem. And I did replace my fuel pump a couple years back, and I think it was an airtex. Sounds like a poor quality.

Hey guys. I been dealing with this issue for a while, but I think I'm ready to search for the answer again. Stock 4.0 (130xxx miles)starts up great when cold. Not so well when warm. Usually have to turn the key twice, rarely three times to get it to start. When it does start warm, it sounds a...

That is correct. I was told that the H.O. system would work fine. Here is the link to that topic. http://www.comancheclub.com/forums/viewtopic.php?f=2&t=14996 I really do appreciate the help trying to figure out the problem. This project has been sitting way to long. Ben

I did have to replace the battery a few weeks ago, but it still runs the same.

Everything is from the 99 except the fuel pump, rail, line, and injectors(all 94). The MJ was originaly a 89, but all that's left of it now is the body and frame.

I'm having an issue with my project MJ. Let's start with its history first. It's a 99 Cheromanche. I've pulled everything from my old 99 XJ and stuck it in this MJ. In order to keep the fuel tank in the stock position, I swapped in the H.O. fuel rail, injectors, lines and pump. The...

Im allowed to post on normal topics, but when I go to post a wanted add it says: Bucketheadben, you do not have permission to access this page. This could be due to one of several reasons: 1. Your user account may not have sufficient privileges to access this page. Are you trying to edit...

Well, I ended up using the MJ tank and pump as suggested by others. They said if I swap in a H.O fuel rail and injectors for my 99 fuel rail and injectors it would be fine. I finish swapping everything over and it won't start. The fuel rail is full of gas and I'm getting spark to the plugs...

The 99 fuel pump won't mount in the MJ's tank. They are completely different. Ben

I've swapped the entire drivetrain from my 99XJ into my MJ, now I have to figure out how to get fuel to it. Id really like to keep the tank in the stock MJ location, but he XJ tank will not fit naturally. So I'm wandering if anyone knows the measurements of a TJ or Grand Cherokee gas tank...

Well I adjusted the rears and bleed the brakes again, but the pedal still sank. So I went and bought a new MC and installed it. Now it works great. Thanks to everyone who helped. Ben

Hey Guys. In the last couple of days my brake pedal would sink 3/4 of the way down and then begin to stop the jeep. It had plenty of stopping power though. I found that one of my front rubber brake hoses had a pinhole in it and was leaking fluid. So i just replaced it and bled the brakes. Now...

I think i found the problem. It was not the pump because i wired it directly off of the the battery and it pumped. So i disconnected the outlet hose on the pump so i could see if it would pump when i turned the key. Nothing in the 'on' position, but when i started it i got fuel. So after...

Thanks for the quick reply jmeti000. Sorry, I forgot to mention that i changed the fuel filter, plugs, wires, cap and rotor button when I bought the XJ. I just finished pulling and cleaning the IAC and using Sea foam but it doesn't seem like it did anything noticable. I actually left it...

Hey guys. My 90 XJ 4.0 Auto has had a long starting problem since I've owned(couple of months.) I think it has something to do with the pump or pressure regulator, but I'm uncertain because priming it doesn't help the long start. It will take about 5 secs until the engine spins over. The...

Thanks for the help guys. I finally got back to working on the MJ. It turned out to be a bad EGR valve. I replaced that and it runs like a champ now. Thanks again.

I also checked the tps' voltage. I was getting 1.7 input, .71 output and 4.7 at WOT. Is that acceptable or should I replace the TPS. It sounds to me like I've got a bad connection since the input is low. But wouldn't that effect the output? THanks Ben

I think it's been sitting for about a month. I cleaned the IAC and it's still the same. It does have some cheep battery connections. I'll try replacing them. Thanks Ben

I just bought an 88 MJ 4.0 manual 4x4 with 130,xxx miles that wouldn't start. I replaced the spark plugs, wires, cap, and rotor and now it will start but idles rough. Most of the time it will start up and then die unless I give it gas. Sometimes it will run well for about 5 secs then it will...

I have a complete wiring harness, intake, fuel rail, injectiors.... from a 93 AUTO xj. I would like to put all of that into my 88 MANUAL XJ in order to clean up the wiring from the renix. First is this fairly simple/posible. Second, if I were to swap all of that and a 93 head, would that make...