9 LIVES
Demolition Expert
- Joined
- Oct 29, 2006
- Messages
- 4,051
Just picked up my first gen truck today...drove it 350 miles home and found a few issues with it. Its a 1991 two wheel drive auto trans dually.
1. It seems to idle WAY to low? with no tach I can't tell but it sounds to be around 500rpm's Barely enough to keep it going at a stop light. Where on the pump is the idle set screw?
2.The brake pedle is spongie & works it way to the floor coming to a stop light if you don't pump it.
3. Low oil pressure light has come on several times while sitting at a stop light. I can't tell if the truck is really loosing oil pressure or if its a bad guage. The truck shakes and rattles a good bit I kind of think its from the low RPM or bad dampener. Where can I plug in a oil pressure guage to test this? and what kind of pressure should I see at idle? The light goes off if I put the truck in neutral or park at the light and gently rev the truck up....along with most of the vibration it basically smoothes out.
4.Water pours out from the venting that is underneath the glove compartment when I have the A/c on and I come to a stop from highway driving. Im sure its just a drain hose that is missing or cracked? could it be something else?
5.When the truck is in park it reads that it is past park on the column pointer thing. When its in drive it says its in Reverse. Can this be adjusted without to much trouble?
6.Truck seemed to top out WOT at 70-72MPH is that from being a dually? or possible just govered at this speed?
I appologize for the long post this is my first ever 1st gen cummins. Im used to P-pumps & CP3's
Lee Majors
1. It seems to idle WAY to low? with no tach I can't tell but it sounds to be around 500rpm's Barely enough to keep it going at a stop light. Where on the pump is the idle set screw?
2.The brake pedle is spongie & works it way to the floor coming to a stop light if you don't pump it.
3. Low oil pressure light has come on several times while sitting at a stop light. I can't tell if the truck is really loosing oil pressure or if its a bad guage. The truck shakes and rattles a good bit I kind of think its from the low RPM or bad dampener. Where can I plug in a oil pressure guage to test this? and what kind of pressure should I see at idle? The light goes off if I put the truck in neutral or park at the light and gently rev the truck up....along with most of the vibration it basically smoothes out.
4.Water pours out from the venting that is underneath the glove compartment when I have the A/c on and I come to a stop from highway driving. Im sure its just a drain hose that is missing or cracked? could it be something else?
5.When the truck is in park it reads that it is past park on the column pointer thing. When its in drive it says its in Reverse. Can this be adjusted without to much trouble?
6.Truck seemed to top out WOT at 70-72MPH is that from being a dually? or possible just govered at this speed?
I appologize for the long post this is my first ever 1st gen cummins. Im used to P-pumps & CP3's
Lee Majors