Posted: 7/27/2006 7:59:09 PM EDT
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I have an 94 ford van (E-250) that I use as a backup work vehicle today I went out and started it up --started normally and went for a little drive to get the operating temp up and so on. now as soon as I exit the driveway I accelerate and whom! it dies out. I put it in park restart idle for a second goose the throttle a few time and it seems ok --put it in drive and accelerate turn the corner to the next street and as I accelerate agian same thing. A little experimentation leads to this scenario press the throttle so far OK press it pass that point and the engine dies out --dosent stall, just "drops out" and if you leave it there the check engine light will come on. once you back off the throttle it recovers, the light goes out, and you can then resume normal driving just dont exceed more than say half pedal --at any speed. It occurs at any speed, PRND12, Hot or cold, up hill, down or level could it be that the throttle position sensor has gone on me? only thing that I was able to come up with. It is a 5.8L auto, no AC about 110,000 miles and it does spen most of its time sitting. I do occasionally, like today, go out fire it up put a few gallons of new gas in drive it around for a few errands etc. |
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Check fuel filter. I drive an E150 2002 van for work, the fuel filters get clogged pretty easily. I had a mustang with the TPS going bad, what it would do is have a very steady up and down idle , like a surging. I would do a tune up on it - plugs, wires, cap , rotor and fuel filter. Maybe clean the Throttle body with some approved cleaner. Also if youre mechanically inclined you can test the TPS with a volt meter, check the specs and on my mustang you could actually adjust it , by loosening the screws and moving it a lil, like millimeters. Also maybe get a diagnostic check on the computer esp since its throwing codes. |
sounds just like a TPS Gary |
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A 94 E-250 with a 5.8 should be an EEC-IV engine control system . It won't set a code unless the sensor circuit is open or shorted . As long as it shows some response the ECM won't flag it . Your going to have to test in manually with a DVOM or a scope , but judging from your symptoms I would suspect an ignition fault . Runs ok no load , Drops dead under load . More then likely it's a crusty coil wire at the coil end , or a weak/bad coil . |