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This is my First post, Not sure if this is the right place. I'm in upstate NY,I have a 1995 E-150 high top conversion van. 302ci. last week it wouldn't start. Had it towed to a local garage telling the mechanic that I thought thewasn't working. Following events happened. 1) they got it started and it back fired and blew/shattered thecover right off, had to replace that, 2) then they told me the ECM (computer went bad) replaced that. 3)still came on reading that the mass airflow sensor was bad, replaced that. 4) was told the fuel pump shorted out the new ECM but it was warrantied, 5) Had to replace the fuel pump, 6) now being told there's a skip in the timing. supposedly bad plugs and wires which wasn't a problem when it was brought in. Did I get shafted? Any help is much appreciated.
Thanks
Mick
Maybee.I took my van in for a small repair at a local Ford dealer and when they were done they could not start it for a few days.They ended up cutting all the wires going uder the dash from inside the hood and replaceing them with a hackie tape job.All this time it was only the fuel pump relay that kept it from starting.To bad you didnt find this site any faster.I was in the same boat untill the wizards on this site spoke.
If it's backfiring like that, then more than likely the ICM (igntion control module) is bad. It could be a bad PIP sensor IN the distributor, or the timing chain has slipped.
Sounds like you got taken either by liars or hackers who do not have a clue.
I would like to see how a bad fuel pump could short out a CPU since the CPU uses a relay to turn on the fuel pump and the fuel pump provides no feedback to the CPU at all so there is no direct connection.
So, what cover blew up on the engine?
I think the chances of your CPU, MAP, and fuel pump all going bad at the same time while you are driving it are pretty slim, you probably have better odds winning the lottery. Sounds like they used you for a lottery payday.
Tow it away to another garage and ask for the used parts and receipts (from the auto parts store) for the parts they replaced.
The engine back fired exploding the air filter box, I got them to credit the ECM but am still done done with this issue. They still insist the fuel... pump shorted the ECM. Thank you so much for your replys. BTW this van is in great shape for it's age and was running like a top before all this happened
They still insist the fuel... pump shorted the ECM.
What can I say- it's impossible that the fuel pump could damage the ECM. Impossible. But I think you already guessed that.
My guess is they had another car in the shop not under warranty that needed a new ECM, so they replace yours on Ford's tab, then sell your used yet functional part to the other guy. This scam is quite common.
You've got one problem. If a particular replacement doesn't fix it that replacement was wrong. ICM is a likely item. ECM, highly unlikely. MAF sensor can be tested manually. Actually the MAF could have been damaged by the backfire, I guess that case could mean you had two problems. Well, you only came in with one problem.
You have a fuel injected 302 in your vehicle? It can not back fire like a carb into the air cleaner, I have never seen that with a fuel injected vehicle. Your intake manifold would go first. What I have seen are morons spray a lot of starter fluid into the intake and start a vehicle fire. I guess yours exploded when the vapors hit the hot wire in your sensor.
I knew one lady/customer where the moron (posted on the General board here about it a while ago) poured gas into a TBI throttle body Chevy van and burnt the van to the ground. The lady got lucky because someone passing by got her screaming behind and kids out of the car seats before the van toasted.
You have a fuel injected 302 in your vehicle? It can not back fire like a carb into the air cleaner, I have never seen that with a fuel injected vehicle. Your intake manifold would go first.
It can happen, rebocardo; mine has backfired and the airfilterhousing blew apart, that is , the lugs which hold the screws to fasten the upper to the lower half broke off.
Nothing wrong with the intake plenum.
And indeed this is a fuel injected 302 (1993).
Cor
Timing chain, that's a very plausible theory too. Timing chain slack is not very hard to check either. When the chain slips the ignition and valve timing are out of sync with the crank so yeah it can backfire. When my 302 went out it quietly turned over with little hint of ignition, when someone tried to help by repositioning the dizzy over and over it backfired in a few positions (it's a speed density system, so I can't say what a MAF would do).
what moron would do something like pour gas into an engine when the kids are in the van , much less within 50 feet of it. and to think these people are working on cars.
I did some more investigating of the guy that burnt the van to the ground and come to find out he (since English was his not his first,second, or third langauge) is an immigrant from .... NIGERIA! Working as a "mechanic" at one of those brake places. Got to love it.
My thing was if the fuel gets atomized by the injector BEFORE it goes into the intake manifold what did you expect the fuel to do when you poured it directly into the intake manifold? She told me he used a 5 gallon can to pour it in, I can only guess how much he used