goodoledodge
Junior Member
- Joined
- Oct 19, 2012
- Posts
- 5
- Reaction score
- 0
- Ram Year
- 1990 Dodge Ram D150
- Engine
- 5.2 318
I have seen several people complain of this problem but I still haven't seen a solution, just a bunch of ideas and the thread dies. This started to happen ONLY AFTER a bunch of work was done by a family friend skilled mechanic. The truck ran PERFECT before the work was done and the truck only has 69k miles on it. Originally I took it to the shop due to a small leak in the intake manifold gasket and my friend ended up doing all sorts of other things it needed for free I only had to buy parts. A lot of the parts you see on the list were because we were throwing parts at it trying to fix this problem.
Symptoms:
When I put it in 1st (its an auto) and take the rpms up to 2000-ish it starts missing and sputtering like a misfire or fuel issue, if you floor it the sputter goes away and pulls good. It will do that through ALL gears but when you lean into the gas it smoothes out AND you can also let off the gas and again it smoothes out. It clearly isn't running right but has full power under WOT. When you get up to 45mph+ and try to maintain the same speed like setting it on cruise control that's when the severe bucking, jerking starts......its really bad! It only does it when feathering/holding the throttle in the same position.......it WILL NOT do it when you floor it or when you let off the gas completely. This is not suspension related or tire balance, I know this is an engine problem for sure.
Here is everything that was done:
New Intake manifold gasket
New coil, wires cap & rotor & plugs (tried 2 sets of all these parts trying to fix the issue) I went BORG Warner the second time currently have a Blaster 2 MSD coil and even tried an autozone coil too but didn't fix it so I kept the MSD.
New Coolant temp sensor
New MAF sensor
New fuel Filter
New fuel injectors
New catalytic converter
New battery
New Valve cover gaskets
New oil pan gasket
New radiator
New water pump and thermostat
New Hoses
2 new sensors that plug into the bottom of the radiator
New motor mounts
oil change
tranny fluid change
Timing is set right at 6deg BTDC (I'm at sea level)
The truck was originally supposed to be 10deg BTDC but there is a recall 588 sticker on it for EGR valve that says timing should be at 6deg BTDC and it runs good as it is now.
The TPS, EGR and other sensors were also tested including the fuel pressure for the fuel pump. Everything seems good and I just don't see how a part could have failed by coincidence when the work was being done, I'm convinced it has to do with the parts that were changed. There are NO CODES either. No one can figure this out and if someone on here cant help me Ill have to take it to a master old school dodge mechanic after I research one and pay a lot of money to be fixed.
Please help me.....I can wrench myself and have also given many hours of trying different things. Today I just checked out the valve springs but again nothing is wrong there either. I have also used about 2 cans of carb cleaner trying to find a vacuum leak....but I cant find any leak whatsoever.
Symptoms:
When I put it in 1st (its an auto) and take the rpms up to 2000-ish it starts missing and sputtering like a misfire or fuel issue, if you floor it the sputter goes away and pulls good. It will do that through ALL gears but when you lean into the gas it smoothes out AND you can also let off the gas and again it smoothes out. It clearly isn't running right but has full power under WOT. When you get up to 45mph+ and try to maintain the same speed like setting it on cruise control that's when the severe bucking, jerking starts......its really bad! It only does it when feathering/holding the throttle in the same position.......it WILL NOT do it when you floor it or when you let off the gas completely. This is not suspension related or tire balance, I know this is an engine problem for sure.
Here is everything that was done:
New Intake manifold gasket
New coil, wires cap & rotor & plugs (tried 2 sets of all these parts trying to fix the issue) I went BORG Warner the second time currently have a Blaster 2 MSD coil and even tried an autozone coil too but didn't fix it so I kept the MSD.
New Coolant temp sensor
New MAF sensor
New fuel Filter
New fuel injectors
New catalytic converter
New battery
New Valve cover gaskets
New oil pan gasket
New radiator
New water pump and thermostat
New Hoses
2 new sensors that plug into the bottom of the radiator
New motor mounts
oil change
tranny fluid change
Timing is set right at 6deg BTDC (I'm at sea level)
The truck was originally supposed to be 10deg BTDC but there is a recall 588 sticker on it for EGR valve that says timing should be at 6deg BTDC and it runs good as it is now.
The TPS, EGR and other sensors were also tested including the fuel pressure for the fuel pump. Everything seems good and I just don't see how a part could have failed by coincidence when the work was being done, I'm convinced it has to do with the parts that were changed. There are NO CODES either. No one can figure this out and if someone on here cant help me Ill have to take it to a master old school dodge mechanic after I research one and pay a lot of money to be fixed.
Please help me.....I can wrench myself and have also given many hours of trying different things. Today I just checked out the valve springs but again nothing is wrong there either. I have also used about 2 cans of carb cleaner trying to find a vacuum leak....but I cant find any leak whatsoever.