My truck misfires and will runs rough and only wants to go up to 40mph/usually am/intermittant

bbourdon
20

Asked by bbourdon Jan 27, 2013 at 06:39 PM about the 2006 Dodge Ram Pickup 1500

Question type: Maintenance & Repair

past had a failure code P0304 , cyclandor #4  misfire
we have replaced spark plugs, coil and fuel injector
Any other ideas as to what the problem is?

10 Answers

joef
4,075

Wow, have you considered it to be more than just a misfire on cylinder 4? It could be a fuel delivery problem to the whole engine. Also, are you SURE that you are working on cylinder #4? Check and double check again. What engine does it have? I'll get you the cylinder numbering. Also, can you feel a noticeable misfire while the engine is just idling in park?

2 out of 2 people think this is helpful.
tommcmanis
4,865

Do a compression test on all cyls this will locate the problem child, a valve w carbon stuck on the valve face will set the light,if you also have back fire it indicates a valve is open upon firing, possible burn valve may be the culprit, this would create a constant runnabilty issue. (Misfire) good compression numbers gas engines 120 - 180 psi diesel 250 - 300 anything below this range will not fire or balance the engine.

tommcmanis
4,865

Hope that helps

tommcmanis
4,865

Also low fuel pressure can give similar symptoms

bbourdon
20

joef-The engine is 5.7 liter HEMI. Yes, it misfires while in park. tommcmanis-I have not tried the compression test yet. Thanks

Curtis Baggett
545

How many miles are on it? What maintenance has been done? What happened when this issue started?

bbourdon
20

87,000 miles. Maintenance-allways oil changes. Truck shaked and did not run faster than 40mph. Now it runs rough/misfires and tends to stop after the engine light goes on. The worst is in the morning. Sometimes during the day.

2 out of 2 people think this is helpful.
retepdic
80

TPS throttle position sensor

2 out of 2 people think this is helpful.
fresnonittanylion559
10

I have a 2003 Dodge 1500. Same code replaced all the plugs and coils. After doing that and a lot of online research I removed my valve cover and found my rocker arm was thrown. It is a common occurrence in the 4,7 v8. Once you replace what the Dodge manual calls a lash adjuster and putt the rocker arm back in your error code should go away. The rocker arm thing is a common thing with the this engine and usually occurs on cold start up. Try running some fuel cleaner and or engine cleaner to clean build up. Good luck

1 out of 1 people think this is helpful.
fresnonittanylion559
10

The engine light flashing on and off is what my truck did and it will drive rough and will not drive over 40. If you can help it do not drive it due to damage it can cause to your catalytic converter.

Your Answer

Add photo

Related Questions

  • Rough Idle Issue 21 answers

    I have a 2003 Dodge ram 1500 SLT with the 4.7ltr engine that has 190,000 miles on it. It was idling real rough recently so I cleaned the throttle body out and changed out the idle control sensor. Th...

    2003 Dodge Ram Pickup 1500 SLT LB

    -

    Maintenance & Repair

  • truck wont stay running 65 answers

    I have a 2001 dodge 1500 pickup. The truck fires right up but will not stay running unless I keep my foot on the gas. As soon as I let off the throttle it dies instantly without sputtering. Gauges rea...

    2001 Dodge Ram Pickup 1500

    -

    Maintenance & Repair

  • 1996 ram 1500 5.9 turns over wont start need help 44 answers

    truck started out running fine but would randomly die. wait a few minutes and would usually fire right back up. then it would randomly die again.. now it only turns over.no fire.tried a snap on diagno...

    1996 Dodge Ram Pickup 1500 2 Dr Laramie SLT Standard Cab SB

    -

    Maintenance & Repair

  • I have a 2003 Dodge Ram 1500. Keep getting the same code on check engine light....Help! 15 answers

    I have a 2003 Dodge Ram 1500 4wd, Club Cab. Runs good except I keep getting the same code on the check engine light. Random misses Cylinder 5 & 6. I have had the oxy sensors replaced. Replace th...

    2003 Dodge Ram Pickup 1500 SLT Quad Cab LB

    -

    Maintenance & Repair

  • Rough Idle Quad Cab 3.9 V6 3 answers

    I took my truck through some mud the other day and noticed that my car had a really rough idle after. Then my exhaust started smelling like rotten eggs. Then my OBD said that I had an cyl. misfire on ...

    2001 Dodge Dakota

    -

    Maintenance & Repair

Ram Pickup 1500
Looking for a Used Ram Pickup 1500 in your area?
CarGurus has 11,157 nationwide Ram Pickup 1500 listings starting at $1,000.
ZIP:

Search Dodge Ram Pickup 1500 Questions

Dodge Ram Pickup 1500 Experts

#1 Dan Connell
Dan Connell
Reputation 3,390
#2 dandyoun
dandyoun
Reputation 3,090
#3 pudgybear
pudgybear
Reputation 3,070
View All

Related Models For Sale

Used Ford F-150"
2,370 Great Deals out of 98,280 listings starting at $1,500
Used Chevrolet Silverado 1500"
1,767 Great Deals out of 143,955 listings starting at $1,495
Used Dodge Ram Pickup 2500"
242 Great Deals out of 4,715 listings starting at $2,900
Used GMC Sierra 1500"
761 Great Deals out of 55,768 listings starting at $2,295
Used Toyota Tundra"
437 Great Deals out of 19,493 listings starting at $2,800
Used Toyota Tacoma"
569 Great Deals out of 24,594 listings starting at $2,500
Used Dodge Dakota"
129 Great Deals out of 3,389 listings starting at $1,975
Used Dodge Charger"
402 Great Deals out of 24,513 listings starting at $3,900
Used Ford F-250 Super Duty"
595 Great Deals out of 34,871 listings starting at $2,500
Used Dodge Ram Pickup 3500"
136 Great Deals out of 2,091 listings starting at $4,999
Used Jeep Wrangler"
924 Great Deals out of 52,965 listings starting at $3,495
Used Ford Mustang"
525 Great Deals out of 35,144 listings starting at $1,600
Used Nissan Titan"
185 Great Deals out of 5,764 listings starting at $5,450

Used Cars For Sale

1995 Dodge Ram Pickup 1500 For Sale
52 listings starting at $1,995
1997 Dodge Ram Pickup 1500 For Sale
139 listings starting at $2,995
1998 Dodge Ram Pickup 1500 For Sale
223 listings starting at $3,990