rev limiter

Asked by Cynthia Oct 12, 2016 at 08:26 PM about the 1991 Dodge RAM 250 LB RWD

Question type: Maintenance & Repair

so this is a project of mine and when i got it it did not run. fast forward to
today and the truck is running idles good and then when i open the throttle it
revs up till i get to about quarter throttle and then it surges no matter how
much more the throttle is opened. once i come back to 1/4 throttle it smooths
back out i have watched the injectors (brand new) as the surging occurs and
they have a good spray right up untill the surging starts then they just
intermittently spray like its trying to lean out the mix when it should be adding
more fuel. i have pulled all codes and repaired/ replaced any and all sensors
fuel pump/filter all relays and the injectors as noted above im  reaching my
wits end and struggling to find the why to this issue any advice is appriceated
thanks  

2 Answers

as a side note the engine sounds like it is hitting a rev limiter but why at such a low rpm ?

188,225

Have you installed a fuel pressure gauge on the rail to see what the pressure is at idle and when you rev it up

Your Answer:

CarGurus Experts

  • #1
    Jason Jones
    Reputation
    260
  • #2
    BoholMark
    Reputation
    120
  • #3
    Gene Arnett
    Reputation
    110
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Ford F-150
343 Great Deals out of 12,723 listings starting at $599

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.