Guys, if You don't help, nobody will. I have a '92 Jeep Cherokee 4.0 which has had a stalling problem for a few years which no one can seem to fix. Any help would be greatly appreciated. Let's get started. When it comes to 2250 rpm (under load or acceleration) seems like someone pinched the fuel line and it just doesn't want to accelerate. After a while, 3-4 seconds, it accelerates like nothing was wrong. So, I've been writing to all you guys before and after all answers, I tried to check everything possible before ask again. It took some time because I'm seaman and mostly on a ship but after replacing part by part, here I am, back here. First, new fuel pressure regulator... nothing happened, then oxygen sensor (it seemed like it measures wrong values), still same. New fuel filter (yesterday), still same. In Haynes manual I found how to test fuel press and I have just done the same and found: With or without vacuum line attached, pressure is 22 psi. So, I tried to drive around with gauge connected and mounted inside the cabin. Happens that in the moment of "stalling" press drops to 18 psi (!?). When it comes to my 22, things goes fine. But nothing like in Haynes about 31 to even 39 psi!? I tried to pinch return hose (possible only down before tank, everywhere is a plastic hose) and nothing changed, it stays on 22. Few months ago, even a fuel pump was removed and I expected dirty inlet filter (one like a nylon bag) but nothing was wrong, clean and fine filter found. One more thing, it happens even with a full tank of gas. Please, this group is my only and last hope. I like this car but the damn thing just doesn't want to perform like it should. Many thanks and greetings from Croatia, Europe.
- posted
17 years ago