Sudden Engine Stalls

JSEATON

MEMBER
FORD BRONCO

I have a 1987 Bronco 5.0 134000 miles. The engine has been rebuilt and has a new 3 speed transmission. All done within the last year and a half. I can start the truck and the idle jumps up and down periodically. Sometimes it jumps alot, up to around 1500 rpm. Going down the road it shows no sign of quitting, no sputters or power loss, then all of a sudden the rpm's go to 0 and there is no response from the accelerator. Now as long as the truck keeps rolling down the road I have power steering and my guages all give readings, but when I slow down to around 10 miles an hour my steering goes away, all my gauges go to nothing and I hear my fuel pump reinitialize the system. Also at that point my check engine light comes on but not until that point when I slow down. I'm at a loss here, any information would help. I realize it could be one of a hundred things, but could you give me a few to try

2 Replies

NOS

MECHANIC
320 POSTS

Sorry some where in there when I was reading I didn't see it saying that the engine is stalling is the engine still running when this does this? The plug that goes to the coil has had problems over the years that is where the tach referance comes from. If you looseing that that means you looseing spark as well. Also check your wireharness real close to make sure all has a good connection.(NOS) 8)

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Saturday, September 23rd, 2006 AT 3:53 PM

JSEATON

MEMBER
2 POSTS

Sorry, I can't tell if the engine is running when the RPM's go to 0, I don't think it is though, but like I said I still have power steering until I slow down to around 10 MPH, so that would have to mean that the power steering pump is still going. Now when I said going down the road, it did it once when I was going 45 mph at 2000 rpm, I lost power and coasted down to about 10mph and then everything shut off and the check engine light cut on. So you are saying to make sure the wires going into the wiring harness for the coil have good connection? If that is what you mean then I have looked at those and they do look bad. Looks as if soemone has tried to rewire that once before. I'll try that.

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Monday, September 25th, 2006 AT 5:38 PM