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Ask -Brad- Your Own Question
-Brad-, Dodge Dealership Tech
Category: Dodge
Satisfied Customers: 7824
Experience:  16 Yrs Chrysler/Dodge Technician. ASE Master Certified(L-1)
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2003 hemi ram1500 199,000 miles came in on hook. runs

Customer Question

2003 hemi ram1500 199,000 miles came in on hook. runs bad...plugs were never replaced. had all cylinder misfire replaced plugs runs somewhat better. no misfire code had low fuel pressure 39lbs. replaced pump now has correct 48lbs still runs poor. had p2299 code from driving it with 2 feet to get here. did a throttle & acc pedal test both work together. we ran misfire counter test no spark misfire no codes now. vehicle doesnt have egr valve
this truck run fire just all of a sudden started to run bad
Submitted: 1 year ago.
Category: Dodge
Expert:  -Brad- replied 1 year ago.

Good afternoon and welcome to JustAnswer!!

My name is ***** ***** I have worked for a Chrysler-Dodge-Jeep dealership for 19 years and I will do my best to help.

I would start by doing a compression check on all the cylinders, the ones that are low pull the valvecover and inspect for broken valvesprings.. If the cylinder has low compression and the valvesprings are not broke then inspect the rocker arm to see if it moves as much as the rest of the cylinders beside it. To do this remove the ASD relay and jump the starter relay to watch the rocker arms move....

Customer: replied 1 year ago.
Compression. Low 130. High 150. Very fast right up to pressure. Under covers everything moves even
Customer: replied 1 year ago.
Still runs like crap. Compression was all good. Valve springs weren't broken what next
Customer: replied 1 year ago.
Still not running. Today I replaced the bed after fuel pump install. Tommorrow I hope I can devote more time to it
Expert:  -Brad- replied 1 year ago.

Sorry for the delay!!

If you erase all the codes and start it up how does it run? Does it still set the P0300?

Customer: replied 1 year ago.
Erase codes no different. No codes present at all. Drove it today 10 min only set o2 heat code.
Customer: replied 1 year ago.
Still not different. O2 heater code nothing else. Surges. Misses. But no codes. Tested all coils. Has new champion oe plugs. Wires were ohm tested. Next???
Customer: replied 1 year ago.
Today we were busy with other vehicles, didn't work on dodge. Any other ideas