89 Econoline Stalls when hot


XXXJAYXXX33
06-15-2011, 02:35 PM
Hey everyone.. Im having some issues with my 89 Econline 302 EFI. A few days ago it stalled in traffic randomly like it was running out of gas. I had just put gas in.. so this seemed very odd to me. After troubleshooting the fuel system, checking for pressure after the secondary pump etc.. it fired back up and ran for a few minutes (just enough to get back onto the street) then stalled again. There seems to be tons of pressure at the fuel rail, and a nice big spark from the plugs. I read up on the problem and many people have pointed to the ICM.. so I had it tested.. and was told it is faulty (although I never rely on parts stores to tell me that). I picked one up at a wrecker.. and im still getting the same issue. I also checked the IAC valve as it has acted up on me in the past.. it always caused high idle.. but it was worth a shot. Still no go.... I dont have much money for troubleshooting.. and its already cost me more than I would like.. Any chance it could be a sensor or something causing the issue? I recently replaced the Engine Coolant Temp (ECT) sensor in a recent bout of troubleshooting... I have seen people mentioning a MAP sensor.. could that possibly be the issue? Is there a way to test it? Im usually pretty good with this stuff.. but for some reason this 302 is just giving me nothing but greif! The engine starts fine when cold, and as soon as it hits normal operating temp (Literally right in the middle of the temp guage) the motor makes the usual clicking noises like it is adjusting fuel mixtures etc.. and then it just dies like its being starved of gas.. Im at my wits end with this thing... Any help would be greatly appreciated!

forney42
01-15-2012, 11:48 AM
Hey, I've been having the same problem with my 98 e 250. Once its up to temp it starts to stall at idle.Once it is going down the road it runs fine. I don't want to spend a thousand dollars running down the problem. Did you ever find a solution for your van? I was thinking fuel filter, or IAC. then I thought I would follow up with a MAF sensor. I am getting 301 code (misfire on cylinder 1) and I have always gotten 174 and 171 (lean conditions)

XXXJAYXXX33
01-15-2012, 02:28 PM
It wound up being the High Pressure fuel pump located on the frame rail just behind the driver side fender. The pump was weak, and would work fine until it reached operating temp. The worn out parts could not keep the constant pressure on the fuel rail required to keep the motor running. If your troublshooting, try finding one of these vans at a local wrecker.. let them know you are troubleshooting and ask about their return policy.. alot of wreckers will let you exchange parts in order to track down the problem... Good luck!

forney42
01-18-2012, 08:27 PM
I changed the fuel pump in the 98 van today. What a pain, this one has the fuel pump in the tank. Had to drop the tank to do it. I had a 96 BMW with the pump in the tank, but they put a hatch over the pump so you didn't have to drop the tank. (I thought about cutting an access hole in the floor of the van- for about three seconds) Seems to have helped.Changed the fuel filter too. I want to change plug number 1 because I think it may have gotten fouled during the problem. I'll give the computer time to reset itself too.
I also changed the ball joints in the front spindles too.Thought it was going to be steering links or even a wheel bearing. But it was bad ball joints. Glad to have the time to fix a few things.

RazzInPA
02-07-2012, 11:24 PM
if u ever find the answer please post it ,im havin same problem and been researchin with no answer ,i will do the same thank you

forney42
02-08-2012, 10:10 AM
My 98 E-250 is happy again, but what a pain to get to. The short answer is that the PVC system was old and the rubber was brittle, letting air in the system causing rough idle. Along the way we replaced the fuel pump, fuel filter, spark plug on number 1, air filter, IAC, and MAF sensor. The MAF sensor we got from the local A Zone was bad and we had to track back to find and fix THAT problem. Now the van is running good again, even better because along the way I went ahead and replaced aging ball joints so now it runs down the road better too. I depend on my van and trucks and can't afford to buy the latest from Detroit (which are great-wish I could afford!) Thanks to my son and neighbor, Jimmy for all the help.

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