Prestolog

First of all, Hi. I'm new to this forum.

I just purchased a '93 F-450 with a non-turbo 7.3 diesel and 4 speed auto. transmission. My problem is this; on deceleration and mild brake application, the engine stalls. It will re-start immediatly and continue to run seemingly fine.
This has tested my sphincter muscles more than once and I'd like to fix the problem. This truck has 99k miles on it, and I have no idea when it was last serviced.

Suggestions?

Thanks in advance.

fomoco01

Sounds kind of funky. Is the idle speed set right?

Prestolog

According to the tach on the dashboard; about 650 r/m in drive, 700-725 r/m in neutral.

tillyb

I have purchased a 1995 Ford 250 Power Stroke Diesel 7.3 L with 56000 Miles on the truck. My problem is the engine sometimes stalls after long trips. It will start right up and may not stall again for several weeks.
Can someone tell me what the problem might be.

Bl00ByU

When the engine stalls, is it as though the key was turned off, or is it slowly dying? Mine started dying as I was coming to a stop at about 99,000 miles. It just quit. Like someone had turned the key off. It did it once a week for a few weeks, then every couple of days, then at least once a day. It always happened when I slowed for a stop light or sign.

I went to my local Ford parts desk and described the symptoms to them. They said it was almost always the cam (or crank) position sensor, I forget which they said. The replacement part was over 200.00, and all it is, is a magnetic pickup with a two wire connector on it. They said that this was not uncommon on the 7.3L turbodiesels. Mine is a 99. The sensor is located in the front cover (the timing cover area) on the engine, low on the right side (when sitting in the driver's seat). It took me about 10 minutes to replace, I believe the hold down bolt was a 10 mm. It's never done that since.

The parts guy recommended that I keep a spare, because you never know when they might go out. I chucked my old one in my toolbox, figuring that if the other one got in bad enough shape, I woudl just put the old one in until I could buy a new one.