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Last post on Apr 29, 2013 at 8:06 AM
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#238 of 262 undetermined reason for rise in RPMs
by dyal2005
Feb 03, 2012 (10:43 pm)
I have an 04 dodge ram 4.7L 1500 SLT quad cab with approx 180,000 miles on it. We have had our truck looked at by a trusted mechanic that has always done us right in the past and he is unable to find the issue that I am hoping someone else might have come across and can help me out with. He has already cleaned the TP sensor, throttle body taken apart cleaned, he has probed the TP Sensor and even ran a test to check the feedback from the computer ( Im pretty sure thats what he told me today) My engine is increasing in the amount of RPMs put out (which causes the truck to somewhat buck or jerk when in motion) It happens when at at idle as well. Its been a while since it has stalled out, but that has happened on occasion. It tends to rev more severely when its damp or cold out. Its almost like someone steps on the gas and then lets up is the best way to describe the action it does and the sound of the motor. As of just tonight it was 66 out; we were driving down the road and it started to just increase in rpms by like 400-500. We have gotten to where we dont pay it much attn since we were told that we would have to deal with it til it gets worse since no codes are being found as to why its doing it. Though after a few mins more it started to really jump in RPMs like 1000 or 1500. We were running 60-65 and the truck stayed at like 2000 RPMs and the highest it would hit was 4000( only like 2 times). At times we we have been able to turn it off and reset it so to speak but this time restarting the engine didnt help at all. Any one have any ideas as to what it might be cause the issue since its not picking up or giving off codes so it is leaving everyone a lil clueless and frustrated on our end
Feb 19, 2012 (2:59 pm)
my 95 ram 5.7 has 357,000 miles on it. it has a problem stalling occasionally when the motor is hot, not all the time. it will turn over but not fire. once it cools down all the way it will start like it was new.
it will run on either, so it has spark. i have replaced the fuel pump as well. it just won't put fuel in the cylinders.
any help?
thanks!
yes, it is the original engine and trans. with 357,000 miles! the only work on the motor is 2 water pumps.
#240 of 262 idle issue at times
by jcharters
Apr 19, 2012 (11:55 am)
Yea ive got a 04 4x4 hemi and this as only happen to me twice but the first i just got fuel and went 3 three miles and went to put it in park and the rpms just dropped to about 200 to 300 so i put my foot in and held it wide open and it came out of it. The next time i did not get fuel just went to start it and it would not start. I tried twice with just the key and nothing so i held the pedal down and cranked it over and it started then smelled flooded. that was about 2 months apart maybe at the most but it has not done it since. All else its a good truck beside the rust in the wheel wells and the blue smoke on start up sometimes but it does not appear to burn oil. Any ideas on were to start or look for the idle issue.
#241 of 262 Re: stalling when hot [rdnkfrftr99]
by gpais1
May 26, 2012 (11:13 am)
i see your post was in feb ,but hoping you still use sight have 98 with the very same problem checked pump is good 45 lbs pressure good spark clled tow truck when i got home took off rollback it started wonder did you ever guess what it was thank you for your time
#242 of 262 Re: 1999 Ram 3500 Cummins Engine dies while driving [hodgepodge1]
by ghufford
Jun 12, 2012 (11:26 am)
my truck did same thing in hot weather had to wait for computer module to cool down, at first i replaced voltage reg, dist. cap, rotor, crank sensor, alternator, etc etc, finaly i bought a rebuilt computer module from orilleys for 300 dollars which included the core of the old one, they programmed it and all for my truck for that price and no problems since
#243 of 262 Re: undetermined reason for rise in RPMs [dyal2005]
by bclifford
Jul 04, 2012 (3:33 am)
I have the exact same vehicle with only 80,000 miles on it and it is doing the same thing. So far Chrysler has done all of the above to the tune of $800 dollars CND and they still have not fix the problem. It is going back in today (July 4, 2012). There is also and update for your engine computer that they put in and for the extra $150 dollars, this did not help either. did you eventually find what the problem?
#244 of 262 Re: undetermined reason for rise in RPMs [bclifford]
by robertg3
Jul 04, 2012 (7:34 pm)
I changed the whole fuse box mount on the left hand size under the hood and was told to not have more than one or two keys on key chain because I had a bunch of keys on my key chain. It work and hadn't had the problem since.
#245 of 262 No bus idle problems
by rawram
Jul 15, 2012 (7:46 pm)
I have a 2003 dodge ram my truck sits for months at a time because of my job. Recently we got alot of rain so I decided to drive it.About an hr in the no bus light come on and my gauges die. I parked it and drove it later the light shut off. Now its idling funny like its going to die. My odometer moves while in park. Also if i turn my key back towards me just a little it idles correct but my ac and radio won't work. and suggestions?
#246 of 262 Re: 07 Ram 1500 MegaCab 5.7 Hemi stalls [gatorpsp]
by hiflier68
Jul 26, 2012 (6:34 am)
Was the problem ever solved.. I am having the same issues with my 98 1500 Ram
#247 of 262 Re: undetermined reason for rise in RPMs [bclifford]
by bclifford
Jul 26, 2012 (8:50 am)
After and extensive search on the internet, I determined it was a "Throttle Position Sensor" or TPS. It cost $29 dollars and I installed it myself. Bingo!!!!! Problem solved. Go to utube and watch the following video.
http://www.youtube.com/watch?v=9gJUR62u4Tg&feature=related