| Author |
 Topic  |
|
|
BusBoy 1
Advanced Member
USA
212 Posts |
 Posted - 11/15/2007 : 9:20:01 PM
|
Hi ALL
I have a problem with a 2001 GMC minibus with a 6.5 It started about a week ago I was driving along and it died just as if you shut the key off. Coasted to a stop and it started just like normal Then a few miles down the road did it again. then ran fine for about 50 miles then it will do it again. Then every so often it will just glitch and then it stays running finally tonight it did it about 10 times in a 14 mile 1 way trip I dropped kids off in the town and run fine. Got back on the highway started doing it again and then every time started getting harder to start and finally we had to tow it home.I have not done anything yet other then changed fuel filter on monday hoping that would be causing it. Not so It really does not feel like fuel filter there is no studder no loss of power its just dead. Has anyone had this same problem. I really have no idea where to start on this one could it be a fuel shut off solinoid or something like that. I have never been around the 6.5 diesel before we bought this bus used this year. First Baby bus we have owned.
Any help would be great
THANKS |
|
|
busgeek++
Advanced Member
United States
253 Posts |
Posted - 11/16/2007 : 04:16:26 AM
|
| Not sure if this is your problem, but check the fuel tank vent. They can cause all sorts of strange things. |
Buses are not a way of life, they are life |
 |
|
|
L.J.D
Senior Member
United States
173 Posts |
Posted - 11/16/2007 : 05:22:59 AM
|
| sounds like you have a bad injection pump. i had the same problem and thats what finally fixed it |
|
|
|
Bassman
Top Member
USA
558 Posts |
Posted - 11/16/2007 : 05:26:22 AM
|
| We have a good number of 6.5's in the fleet and have experienced a lot of similar problems in the fuel systems. There should be a little electric supply pump on the LH frame rail that fails quite often. But....it will run fine without it until you get air in the system and it loses its prime. My "psychic" prediction is that if you can get it to a good GM dealer and they run through the diagnostics, they will tell you that you have to pay for a supply pump, a fuel filter and a system flush, but that there is an extended warranty on the injector pump/optic sensor which is the ultimate cause of your problem. GM has had so many problems with this that the manufacturer of the pump is offering extended coverage as long as the rest of the system is good. Good luck and let us know. |
|
|
|
Wolf0r
Top Member
USA
2181 Posts |
Posted - 11/21/2007 : 09:17:42 AM
|
00064F is the newest bulletin.
THIS BULLETIN IS BEING REVISED TO ADD INFORMATION TO THE DIESEL EFI DIAGNOSTIC WORKSHEET FOR THE FUEL TEMPERATURE SENSOR, AND ADD INFORMATION TO THE SERVICE PROCEDURE. PLEASE DISCARD SPECIAL POLICY BULLETIN NUMBER 00064F, DATED SEPTEMBER 2004.
--------------------------------------------------------------------------------
Condition
Some customers of 1994-2002 Chevrolet and GMC C/K, G and P model trucks; and 1997-1998 B7 school bus chassis, equipped with a 6.5L diesel engine (RPO L49-VIN Code P; RPO L56-VIN Code S; or RPO L65-VIN Code F), may experience a failure of the electronic diesel fuel injection pump.
Special Policy Adjustment
This special policy covers the condition described above for a period of eleven (11) years or 120,000 miles (193,000 km), whichever occurs first, from the date the vehicle was originally placed in service, regardless of ownership. Damage from poor quality or incorrect grade diesel fuel, and gasoline or water contamination, is not covered under the terms of the 6.5L diesel warranty.
This special policy applies ONLY to electronic diesel-fuel injection pump repairs and/or replacement as a result of injection pump failure. The pump repair or replacement will be made at no charge to the owner. This Special Coverage does not cover: glow plugs, turbocharger wear, low compression engines or PCM/PCM wiring conditions.
Fuel quality may cause driveability problems such as hesitation, lack of power, stall, no start, etc. For best results, use Number 2-D diesel fuel year-round (above and below freezing conditions) as oil companies blend Number 2-D fuel to address climate differences. Number 1-D diesel fuel may be used in very cold temperatures (when it stays below -18°C (0°F); however, it will produce power and fuel economy loss. The use of Number 1-d fuel in warm or hot climates may result in stalling, poor starting when the engine is hot and may damage the fuel injection system. For further detail related to Fuel System Specifications, refer to SI.
Vehicles Involved
Involved are all 1994-2002 Chevrolet and GMC C/K, G and P model trucks, and 1997-1998 B7 school bus chassis, equipped with 6.5L diesel engine (RPO L49-VIN Code P; RPO L56-VIN Code S or RPO L65-VIN Code F) and built from Start of Production to End of Production, which begins and ends with the following VIN breakpoints:
2000
Chevrolet
C/K
Flint
YF400001
YF520997
2000
Chevrolet
G
Wentzville
Y1100001
Y1279981
2000
GMC
C/K
Flint
YF400004
YF521003
2000
GMC
G
Wentzville
Y1100033
Y1279956
2001
Chevrolet
C/K
Toluca
1M100001
1M118806
2001
Chevrolet
G
Wentzville
11100004
11246091
2001
GMC
C/K
Toluca
1M100010
1M118767
2001
GMC
G
Wentzville
11100033
11245992
2002
Chevrolet
C/K
Toluca
2M100002
2M116925
2002
Chevrolet
G
Wentzville
21100001
21247739
2002
GMC
C/K
Toluca
2M100004
2M116944
2002
GMC
G
Wentzville
21100117
21247317
Parts Information
Support parts required to complete this repair are to be obtained from General Motors Service Parts Operations (GMSPO).
Part Number
Description
Qty/ Vehicle
Exchange Program - U.S. & Canada Only
Pump, Diesel Injection
1
10137486
Gasket, Injection Pump (All)
1
10137537
Gasket, Upper Intake Manifold (94-00 C/K)
1
12531704
Kit, Intake Manifold Gasket (All; right & left sides)
1
10191427
Gasket, EGR Valve (94-98 C/K only w/L56)
1
10211661
Gasket, Upper Intake (96-00 G van w/L65)
2
12456133
Seal, O Ring (96-00 G van w/L65)
1
10191430
Gasket, Upper Air Cleaner (94-95 G van w/L49)
1
12561591
Valve, Fuel Shutoff Sol
1, if req'd
12562836
Driver Kit, F/Pmp Mdl
1, if req'd
Customer Notification
General Motors will notify customers of this special policy on their vehicles (see copy of typical customer letter included with this bulletin - actual divisionsl letter may vary slightly.)
|
“The good thing about science is that it's true whether or not you believe in it.”
Neil deGrasse Tyson |
|
|
|
Wolf0r
Top Member
USA
2181 Posts |
Posted - 11/21/2007 : 09:19:51 AM
|
| Looks like you need to bring to GM. We have a worksheet to fill out and lots of paperwork. That is if you meet the criteria above. Mention your symptoms. |
“The good thing about science is that it's true whether or not you believe in it.”
Neil deGrasse Tyson |
|
|
|
BusBoy 1
Advanced Member
USA
212 Posts |
Posted - 11/21/2007 : 2:05:37 PM
|
Thanks For all the info I have not got a chance to do much with it Lately I have driven It myself about 110 miles and it has run perfect
But I now if I send it out with kids it will quit again. I will keep you posted
THANKS ROB |
|
|
|
wistech
Active Member
United States
48 Posts |
Posted - 11/29/2007 : 09:57:06 AM
|
If you have no codes and an intermittant stall chances are 95% its the pmd on the fuel pump. When they get hot they sometimes shut off for a second and then it will start up like nothing had happened. There is a kit out to remote locate the pmd with a heat sink without tearing the engine apart to get at it. Most fuel shops deal with this all the time and have the kits in stock.
If you do have a code for the fuel pump then its most likely the optical sensor which will require a pump repair.
Gm has a special extended warranty for the 6.5 fuel pump that is 11 years but you have to run through hoops to get it most of the time. It will cover a new pmd but not the cooling kit unless your service manager is in good with GM. |
|
|
| |
Topic |
|
6.5 Dead
