2012 ram 5.7l hemi startup issue

Asked by CLathem Sep 30, 2018 at 09:38 PM about the 2012 RAM 1500 Tradesman Crew Cab

Question type: Maintenance & Repair

I have a 2012 ram 1500 5.7l hemi, my problem is when
truck is cold it starts right up or when it is hot it starts right
up but if I drive it and let it get to temp then let it sit about
an hour or so where it cools down but not cold when i go to
start it up again it turns over and over eventually starting
but acts like it is either starved for fuel or flooding out, I
know with the computer it is designed to start without
touching the gas pedal but if you bump the gas pedal it will
start, I'm not sure if this next thing has anything to do with
the mentioned problem but also driving it and pushing the
gas to the floor to say pass somebody on the interstate it
hesitates and acts like it is cutting out, I haven't been able
to figure out the problem and the dodge dealership here
says theres nothing wrong with it so I'm lost and I hate to
keep throwing parts at it hoping it will fix it, I have already
replaced the mass air flow sensor or the ram air charge
sensor whatever it is called also the MAP sensor any other
ideas of what it may possibly be? Thanks!

1 Answer
30

layziebone405 answered 6 years ago

hey man what did you end up finding out about this particular problem. I also have a 2012 1500 outdoorsman (similar to tradesman) with the 5.7hemi and I changed out the MAP, Intake air temp sensor, O2 sensors, was about to do the PCV valve. I do not know what else to do and I'm actually in the military with a American truck...in Italy. Really no available parts or mechanics and help so everything I do is via internet orders or maintenance on my own. Really would appreciate any guidance as I still get engine codes P1129 (first) then P0135 and P0155 which all tell me closed loop fueling not achieved and the O2 sensors heating circuitry is off due to the closed loop not achieved. I read in RAMforumz.com about maybe the Engine Coolant Temp sensor and I haven't had any problems although my truck will not get to a temp above 192 for the coolant even when I'm going 50mph. so yeah if you got yours fixed where any of these the case and what may have been the result. thank you for whatever you offer

Mark helpful

Your Answer:

Related Questions

  • 2012 ram 5.7l hemi startup issue 1 Answer

    I have a 2012 ram 1500 5.7l hemi, my problem is when truck is cold it starts right up or when it is hot it starts right up but if I drive it and let it get to temp then let it sit about an hour or ...

    2012 RAM 1500 Tradesman Crew Cab

    -

    Maintenance & Repair

  • 2012 Ram 1500 5.7 Hemi 3 Answers

    Was driving the other day and my truck shut off. I have power to the truck but the engine cranks but wont catch. I can hear the fuel pump so i assume its not that. Had a OBD 2 tester hooked up but n...

    2012 RAM 1500 Express Quad Cab

    -

    Maintenance & Repair

  • 2012 Ram 1500 Hemi cold start issues? 1 Answer

    120K miles, Hemi, Crew Cab SLT 4x4: Started very randomly for the last year; now for the last few months nearly every cold start. It either cranks w/no start, or Start/Die 1-3 times... then starts a...

    2012 RAM 1500 SLT Crew Cab 4WD

    -

    Maintenance & Repair

  • can i put a 5.7l hemi 2015-16 engine in a 2012 ram 1500? 8 Answers

    I have a 2016 engine that I can buy but I need to know that I can make it fit in my 2012 ram

    2012 RAM 1500 Big Horn Crew Cab

    -

    Maintenance & Repair

  • 2012 dodge ram evaporative emissions purge control valve location on hemi 1 Answer

    I have a 2012 Ram big horn 1500 4x4. I need to replace the evaporative emissions purge control valve. But I cannot find it.

    2012 RAM 1500 Big Horn Quad Cab 4WD

    -

    Maintenance & Repair

Shortcuts

Search RAM 1500 Questions

CarGurus Experts

  • #1
    dandyoun
    Reputation
    2,460
  • #2
    Bobbie Burns
    Reputation
    2,340
  • #3
    GuruZD4Z6
    Reputation
    1,650
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Ford F-150
320 Great Deals out of 13,991 listings starting at $1,712
Used Chevrolet Silverado 1500
222 Great Deals out of 5,872 listings starting at $2,975
Used RAM 2500
43 Great Deals out of 2,147 listings starting at $13,650
Used GMC Sierra 1500
132 Great Deals out of 6,515 listings starting at $3,975
Used Toyota Tundra
30 Great Deals out of 1,367 listings starting at $6,255
Used Toyota Tacoma
45 Great Deals out of 1,079 listings starting at $9,399
Used Dodge Charger
39 Great Deals out of 727 listings starting at $5,995
Used Dodge Durango
52 Great Deals out of 2,236 listings starting at $5,500
Used Ford F-250 Super Duty
18 Great Deals out of 1,178 listings starting at $8,995
Used Jeep Grand Cherokee
113 Great Deals out of 3,142 listings starting at $3,995
Used Chevrolet Silverado 2500HD
28 Great Deals out of 1,243 listings starting at $9,500
Used Dodge Challenger
22 Great Deals out of 455 listings starting at $7,999
Used Chevrolet Colorado
32 Great Deals out of 1,585 listings starting at $5,800
Used GMC Sierra 2500HD
22 Great Deals out of 1,521 listings starting at $5,500

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.