Engine codes

[desertdiesel]

I have been ignoring my check engine light that comes on while driving for the past 2 years. But over the past month the truck has died while I was driving and a couple times it started up right away but the other times it took some time to get it restarted.

The truck is a 1994 GMC 2500 6.5L TD with 115,000. I replaced the glow plug controller about two years ago and other then that I have not had to replace any thing.

The codes that I am pulling from the ECM are 29,32,33,34,35,36,44,49,57,62,78,91, & 92.

Also, I have a new fuel filter for the truck but I do not know where the filter is located.

[Chevylover]

I have been ignoring my check engine light that comes on while driving for the past 2 years. But over the past month the truck has died while I was driving and a couple times it started up right away but the other times it took some time to get it restarted.

The truck is a 1994 GMC 2500 6.5L TD with 115,000. I replaced the glow plug controller about two years ago and other then that I have not had to replace any thing.

The codes that I am pulling from the ECM are 29,32,33,34,35,36,44,49,57,62,78,91, & 92.

Also, I have a new fuel filter for the truck but I do not know where the filter is located.



Check the codes here :
How to read the codes and what does they mean ? (http://www.kennedydiesel.com/readcodes.html)

Cu,
Sven

[sixnickel]

It sounds like a classic case of a bad PMD/FSD go to SS Diesel Supply read Walt's FAQs then order a Heat -Sync kit! The Fuel filter is on the back of the intake manifold near the fire wall. You will have to take that nice plastic cover that says TUBRO POWER off (then throw it away it holds heat in the IP and won't fit with the Heat-Sync anyway!) When you take the f/filter out the new one goes in only one way look at the tabs and slots they must line up. To bleed it open the bleeder on top and turn the key on and off a few timestill you get fuel out the bleeder. Also with the engine running open the "tee" valve at the thermostat housing and bleed off the water and crud from the bottom of the filter. Good luke and have fun.

[TedReminder]

First things first. Clear the codes. When you run the codes, wait till it gets to the third time on the 92 code, then while it's flashing press brake and hold it while, pressing the throttle pedal five times. Then pull the paper clip and drive it a while. Then run the codes and see which ones come back.
In two years you should have replaced a few fuel filters, so I say replace it. Easy job.
Ted

[desertdiesel]

I changed the filter, easy enough. I tried bleeding the filter but no fuel would come out so I started the truck, shut it off, opened the bleeder, and turned the key on and off. Fuel then came out but wouldn't stop untill I closed the valve. Is this bad? I opened the T valve with the engine running and nothing came out.

I cleared the codes, drove the truck, and reran the codes. All that I am getting now is a 32 and 33.

When I pulled the engine cover off I found that the hose to the egr valve was not connected. This could of been part of my problem.

It takes a long time for my truck to warm up (like 5 miles) but runs cool. The only time I have seen it even get to 210 is going up a steep hill while towing. Do you guys think that my thermostat may be stuck? Also, what is the adjustment screw for in the thermostat housing?

Thank you guys for the help.

[TedReminder]

Mine runs pretty cool too, damn hard getting heat in this single digit temperatures we been having in Ohio. The screw on the thermostat housing is an air bleed. With engine cool you open it till antifreeze comes out. Gets the air out of the system.
Get the EGR stuff hooked back up. Then open the fuel bleed by the thermostat and see if fuel is coming out fast enough with engine running. A hose and bottle catch the fuel. Usually if the fuel bleed is opened and the engine keeps running, the lift pump is ok.
I'm getting a feeling all you had wrong was a very dirty fuel filter and un-hooked EGR vacuum hose. The simple things are so damn confusing, ;-)
Ted