TRUCK NEEDS HELP
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TRUCK NEEDS HELP
MY 1999 F350 7.3 HAS 165000 MILES ENGINE LIGHT COMES ON THEN GOES OFF AFTER A SHORT TIME AFTER 1 MONTH E LIRGHT STAYED ON THEN ENGINE QUITS AND LIGHT GOES OFF TRUCK FIRES BACK UP AND RUNS FINE THEN JUST QUITS AFTER ABOUT 2 MINS IF U DONT CYCLE THE KEY AND START TRUCK IDLES ROUGH BUT IF U CYCLE THE KEYOFF THEN ON TRUCK RUNS SMOOTH BUT QUITS AFTER 2 MIN
THING DONE FIXED ALL FUEL LEAKS 1 WAS WATER SEPERATER NEW
CHANGED TRANSFER PUMP TRUCK DOEDNT QUIT ANY MORE LIGHT COMES ON THEN GOES OFF TRUCK SEEMS TO BUTTER A BIT BETTER WHEN LIGHT GOES OUT ANY IDEAS
TRUCK HAS HYPERTECH PROGRAMED 25 HP STIFF SHIFT
THING DONE FIXED ALL FUEL LEAKS 1 WAS WATER SEPERATER NEW
CHANGED TRANSFER PUMP TRUCK DOEDNT QUIT ANY MORE LIGHT COMES ON THEN GOES OFF TRUCK SEEMS TO BUTTER A BIT BETTER WHEN LIGHT GOES OUT ANY IDEAS
TRUCK HAS HYPERTECH PROGRAMED 25 HP STIFF SHIFT
Lead Driver
Joined: Jul 2003
Posts: 7,404
Likes: 52
From: Wheatland, Mo
My first thought would be to remove the programmer and see how it does without it. This will either point to the programmer or not as the problem.
If that doesn't cure it, then I would look at replacing the CPS. There is a recall on this and if you don't know if its been done, you can contact just about any dealer with your VIN and they can tell you if it has been done already or not. However, there are certain ones that are known bad even if new. I am sure someone else will chime in with which ones are good and which are bad. If you do take your truck to the dealer for the CPS, be very adamant about them NOT flashing your PCM while they have it there. This has caused more problems than not. Otherwise, you can get your own for about $25 and spend the 10 minutes to change it out yourself.
Let us know how it goes or any changes from there.
If that doesn't cure it, then I would look at replacing the CPS. There is a recall on this and if you don't know if its been done, you can contact just about any dealer with your VIN and they can tell you if it has been done already or not. However, there are certain ones that are known bad even if new. I am sure someone else will chime in with which ones are good and which are bad. If you do take your truck to the dealer for the CPS, be very adamant about them NOT flashing your PCM while they have it there. This has caused more problems than not. Otherwise, you can get your own for about $25 and spend the 10 minutes to change it out yourself.
Let us know how it goes or any changes from there.
Mountain Pass
Joined: Oct 2009
Posts: 137
Likes: 0
From: Fayetteville
I think the first thing you need to do is find someone that can read the code stored in the ECM that caused the light to turn on.
You need someone with something more advanced then a standard OBD-II scanner. The free scan that Autozone offers will not pick up most codes on these trucks.
Try a diesel mechanic or the ford dealer.
Once you have the code it will tell you where to start looking, but right now it could be anything.
You need someone with something more advanced then a standard OBD-II scanner. The free scan that Autozone offers will not pick up most codes on these trucks.
Try a diesel mechanic or the ford dealer.
Once you have the code it will tell you where to start looking, but right now it could be anything.
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