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Jerry
Jerry, Master Mechanic
Category: Dodge
Satisfied Customers: 1740
Experience:  ASE Master tech, 30 years exp. troubleshooter, driveability tech
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1994 dodge ram 1500 5.9 liter. Runs rough and fuel pressure

Customer Question

1994 dodge ram 1500 5.9 liter. Runs rough and fuel pressure when running keeps jumping 5 lbs up and down. Any suggestions what my problem is?
Submitted: 4 months ago.
Category: Dodge
Expert:  roy replied 4 months ago.

good afternoon my name is ***** ***** I will assist

the first thing you need to do is get the fuel pressure constant. it sounds like the pump is your first issue. I would replace it and re test to verify and see what happens with the running

is the check engine light on

Roy

Customer: replied 4 months ago.
No. Check engine light is not on. New fuel pump already installed.
Expert:  roy replied 4 months ago.

thats new information

did this happen with the old pump???

Customer: replied 4 months ago.
I was having same problem with old pump and low pressure with old pump.
Expert:  roy replied 4 months ago.

ok, then lets check voltage at the fuel pump. can you check the voltage at the pump???

Roy

Customer: replied 4 months ago.
I need a little time. 15min.
Expert:  roy replied 4 months ago.

ok, going to pick up my dinner anyway

Customer: replied 4 months ago.
One side of the plug 45.6. other side of plug 7.6
Expert:  roy replied 4 months ago.

cannot be 45.6 you only have 12 volts available for use. make sure you are on volts, dc on your meter

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