What would cause a bad mis that wont let me go over 30mph

Asked by Nov 01, 2016 at 09:23 AM about the 2001 Dodge Ram 2500 4 Dr ST 4WD Quad Cab LB

Question type: Maintenance & Repair

After pulling a trailer with a ground issue my 5.9magnum started acting up
when trying to go over 40 mph, it now won't go over 30.  I've replace plugs,
wires, coil, tps, computer relay fuse, checked fuel pressure (50psi) and
injectors.  Runs smooth at idle until you touch gas and starts to cut out and
die if you give it to much.  Cat good and nothing in oil, water, or coming out
exhaust.  Any suggestions???  Thanks.

1 Answer

52,015

It might be a plugged up catalytic converter.

Your Answer

Add photo

Related Questions

  • 99 Dodge Ram 2500 v10 won't shift high altitude 1 answer

    i have a 99 dodge ram 2500 everytime i go up the mountain or high altitude like woodland park here in colorado i turn my truck off than back on it wont shift so im stuck going 25-30mph until i get t...

    1999 Dodge Ram 2500

    -

    Maintenance & Repair

  • v10 99 dodge ram 2500 shifting trouble 3 answers

    i have a 99 dodge ram 2500 everytime i go up the mountain or high altitude like woodland park here in colorado i turn my truck off than back on it wont shift so im stuck going 25-30mph until i get to ...

    1999 Dodge Ram 2500

    -

    Maintenance & Repair

  • sluggish acceleration once over 30mph 3 answers

    Bought a 1999 neon. When you press the gas from stand still acc. is fine. When you get to about 30mph, press the gas to the floor, it slowly accelerates?? ThoughtS>

    1999 Dodge Neon

    -

    Maintenance & Repair

  • What is wrong if my car will not go over 30mph 1 answer

    I have a 2013 dodge dart... my husband just tried to go to work... he came back home in less than 1 minute. He said aomething is wrong with the car it will not go over 30mph... what is wrong with i...

    2013 Dodge Dart Rallye

    -

    Maintenance & Repair

  • Why 2001 Dodge Ram 250 runs <30mph when cold 1 answer

    2001 Dodge Ram 2500 4x4 diesel has intermittent problem. It starts okay,but will only go o-30 mph. Usually ~15. It doesn't run rough,just no power. At times it seems okay,the after stopping at signal...

    Dodge RAM 250

    -

    Maintenance & Repair

Search Dodge Ram 2500 Questions

Dodge Ram 2500 Experts

#1 Dan Connell
Dan Connell
Reputation 2,150
#2 Ram2500Diesel
Ram2500Diesel
Reputation 560
#3 AJBurns
AJBurns
Reputation 480
View All

Related Models For Sale

Used Dodge Ram 3500
78 Great Deals out of 2,173 listings starting at $5,950
Used Ford F-250 Super Duty
399 Great Deals out of 47,782 listings starting at $400
Used Chevrolet Silverado 2500HD
353 Great Deals out of 26,460 listings starting at $1,250
Used Dodge Ram 1500
448 Great Deals out of 11,538 listings starting at $700
Used GMC Sierra 2500HD
141 Great Deals out of 13,998 listings starting at $2,650
Used Ford F-150
2,420 Great Deals out of 210,948 listings starting at $895
Used Chevrolet Silverado 1500
2,046 Great Deals out of 160,025 listings starting at $999
Used Ford F-350 Super Duty
380 Great Deals out of 27,220 listings starting at $2,495
Used Chevrolet Silverado 2500
8 Great Deals out of 300 listings starting at $3,995
Used Toyota Tundra
543 Great Deals out of 32,258 listings starting at $2,800
Used GMC Sierra 1500
899 Great Deals out of 64,954 listings starting at $1,500

Used Cars For Sale

2010 Dodge Ram 2500 For Sale
10 Great Deals out of 299 listings starting at $7,900
2009 Dodge Ram 2500 For Sale
10 Great Deals out of 298 listings starting at $8,000
2008 Dodge Ram 2500 For Sale
16 Great Deals out of 551 listings starting at $4,990
2007 Dodge Ram 2500 For Sale
34 Great Deals out of 797 listings starting at $5,500
2006 Dodge Ram 2500 For Sale
32 Great Deals out of 1,216 listings starting at $7,100