Visit The Dirt Forum for More Information

Author Topic:   ford diesel question - not racing
STREET16
Dirt Maniac

Total posts: 158
posted October 12, 2005 08:17 PM  
I know that there are a lot of people on this site that know more about diesels than I do, and hopefully one of you have seen this problem before. 1995 7.3 powerstroke diesel suddenly lost power. It still ran, but I had to get a running start to get it on a tow dolly. It sounds horrible. Computer said #8 injector was bad - no other faults. Had it replaced, and it runs better - top speed 40 MPH. Still sounds horrible. Any ideas? I'm stumped, the computers stumped, and I can't afford to replace one expensive part after another until I get to the right one. Thanks.

Xtreme12x
Dirt Forum Champ
Total posts: 874
posted October 12, 2005 08:56 PM  
We had the exact thing happen. You'll have to take it in and have the fuel filters changed and a service on it. We ran ours too low and filled up, and started on the way home and ended up only going 40 MPH. It was fuel filters full of water from running the tank too low.

STREET16
Dirt Maniac

Total posts: 158
posted October 12, 2005 09:08 PM  
The fuel filter was the first thing I replaced. I should have mentioned that in the initial post. But you brought up water in the fuel, I hadn't thought about that. Thanks.

Bob Berryhill
Dirt Roller

Total posts: 17
posted October 12, 2005 09:51 PM  
First,make sure the engine is full of good,clean oil.Next,have anyone with a scan tool check the cam sensor[these are very prone to failure].Then,disconnect the wiring harness connectors at the inside edge of the valve covers [very carefully,they get brittle with age].If they smell burned,have oil in them or look distorted,the valve cover gaskets and the little harnesses inside the valve covers will probably have to be replaced.the next area is the injector driver module on the drivers side fender well.I've seen more than one get moisture in it and short it out.Pretty spendy to replace but if you remove it and tip it up and water runs out,it's junk.Lastly,injectors.Awfully expensive to replace the whole set,but sometimes you don't have a choice.Hope this helps.

sc1 racing
Dirt Freak

Total posts: 419
posted October 13, 2005 07:28 AM  
mr berryhill is on the money there..

STREET16
Dirt Maniac

Total posts: 158
posted October 13, 2005 09:37 AM  
Thanks, Bob and sc1.

Koolaid
Dirt Forum Racer

Total posts: 82
posted October 13, 2005 02:46 PM  
Just wanted to mention in case you haven't checked it out: www.thedieselstop.com is a good Ford diesel website.

KK17
Dirt Freak

Total posts: 229
posted October 13, 2005 06:14 PM  
does it have a EBP valve..check the turbo pedestal on the pass. side..if there is a rod connected to a bell crank then it has ebp..that may be stuck shut thus choking the exhaust and engine out...also check and make sure your MAP sensor hose is ok..it may have rubbed thru on the "beauty" cover that covers the fuel filter housing..sensor is located on top of heater box with a hose going into the intake part of the head on the pass. side....you may also have a throttle pedal problem. one last thing to try is flip the yellow fuel drain lever on the filter housing while the engine is running..if it smooths out you have scored injectors caused by water contamination...best advice coming from a ford tech, is to bite the bullet and take it to a dealer..ask around and see who has a good diesel tech..you'll be money ahead in the long run.

dilbert
Dirt Full Roller

Total posts: 38
posted October 13, 2005 09:14 PM  
try the forums on.... www.ford-trucks.com
Its helped me troubleshoot lots of ford truck problems.

Back to the Archives