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Old 04-13-2011, 12:16 PM
Palidun Palidun is offline
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Default Engine won't start

Any of you hear of this? About 6 months ago I began having a problem where about once a month I would try to start my 4.0: it would crank and crank, but wouldn't start. I would let it sit about a half hr and it would start right up. No codes were shown. I put up with it until last month, until I had to let it sit for 4 hrs before it would start. I talked to the Ford guy and he told me to put on a new AIR module which I did. Seemed to fix the problem. Monday we had a day with a cold morning, that got up to about 80 in the afternoon - and the not starting problem was back. Tapped on the AIR valve no success, pulled the AIR valve - looked new inside. Let it sit for an hour still wouldn't start. Went back the next morning and it fired right up. Fired up fine rest of Tuesday and today. Talked to another Ford mechanic, and he told me this is a known problem on Rangers and it's the beginning of failure for fuel pump module in the tank. It won't give any codes, and there is on way to predict when it will happen other than significant change in temp from the morning to the afternoon. He gave me example after example. Replace it and the problem goes away, plus your gas mileage returns to normal. Right now my gas milease is in the basement. Priced the part and it's not cheap. Before I drop that kind of change for the part, have any of you heard of this supposedly well know Ranger problem that acts like an AIR module, but only happens when there is a significant change in temp from the morning to the afternoon. It's different than an AIR valve - with one of those you push the accelerator, the truck will try to start and run. This won't when it happens. Checked the spark, it has pleanty.
2003 Ranger Edge - Black with black/grey interior. 4.0L engine, cold air induction, cat back exhaust, tune chip. Bilstein shocks, Limited Slip axle, Ultra Gauge
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