HELP! hesitation when engine cold
#11
02-19-2012, 01:26 PM
#12
02-19-2012, 01:38 PM
Maybe you should read the replies in the thread where you posted the exact same question. And maybe think about reading the stickies on top of the forum, like this one for instance. 
https://dodgeforum.com/forum/2nd-gen...new-topic.html
https://dodgeforum.com/forum/2nd-gen...new-topic.html
#13
10-12-2012, 04:53 PM
Well thats gotta be it
I am having the same issue. just did all the routine stuff anyway, it was due, (cap rotor plugs pcv air cleaner) still having same issue. sounds like a exact match. i DID THE DOWNSTREAM ONE A COUPLE YEARS AGO, IT THREW CODES RIGHT AWAY BUT THIS TIME NONE. I gotta say thanks for the posts, new and old, people helping people. I will be sure if I can help next time I will. I will post results in a couple days however I am confident that this will do it. THANKS ALL!
#14
11-13-2012, 01:00 PM
Same Problem
I have been having the exact same problem with my 2003 ram 1500 5.9L. The only thing is that it's not putting out any codes. Is it possible that sometimes the O2 sensor could be bad without putting out any codes? Do i have to replace both O2 sensors or just the pre-cat one?
Things I have done to try to fix this problem unsuccessfully:
-Cleaned TB
-Replaced spark plugs
-Replaced TPS
-Replaced IAC valve
-Replaced PCV valve
-Replaced crank sensor
-Replaced Map Sensors
-Replaced Fuel pump (bad pressure reading)
-Checked the back pressure for the CAT, turned out fine
Thanks for any advice!
Things I have done to try to fix this problem unsuccessfully:
-Cleaned TB
-Replaced spark plugs
-Replaced TPS
-Replaced IAC valve
-Replaced PCV valve
-Replaced crank sensor
-Replaced Map Sensors
-Replaced Fuel pump (bad pressure reading)
-Checked the back pressure for the CAT, turned out fine
Thanks for any advice!
#15
11-13-2012, 03:58 PM
I have been having the exact same problem with my 2003 ram 1500 5.9L. The only thing is that it's not putting out any codes. Is it possible that sometimes the O2 sensor could be bad without putting out any codes? Do i have to replace both O2 sensors or just the pre-cat one?
Things I have done to try to fix this problem unsuccessfully:
-Cleaned TB
-Replaced spark plugs
-Replaced TPS
-Replaced IAC valve
-Replaced PCV valve
-Replaced crank sensor
-Replaced Map Sensors
-Replaced Fuel pump (bad pressure reading)
-Checked the back pressure for the CAT, turned out fine
Thanks for any advice!
Things I have done to try to fix this problem unsuccessfully:
-Cleaned TB
-Replaced spark plugs
-Replaced TPS
-Replaced IAC valve
-Replaced PCV valve
-Replaced crank sensor
-Replaced Map Sensors
-Replaced Fuel pump (bad pressure reading)
-Checked the back pressure for the CAT, turned out fine
Thanks for any advice!
#16
11-13-2012, 11:26 PM
#17
11-14-2012, 10:37 AM
Ok thanks for the advice. Any tips on the best ways to remove an old, rusted O2 Sensor? The pre-CAT sensor is a damn pain to get to, and the local mechanic I go to said he can't remove it without cutting out the pipe around it and replacing the pipe. Are there any tricks to it? Thanks!
#18
11-14-2012, 11:04 AM
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#19
01-16-2019, 03:14 PM
I am new to this forum, but I have been reading through some threads, and it seems like there is lots of valuble information being shared. Any help anyone could offer would be much appreciated.
Here is my problem.
My 2001 Dodge Ram 1500, with 5.9L has been acting up for quite a while now. The problem is very consistent. The engine starts and runs fine for a couple minutes, then it begins to sputter and hesitate and backfire. The RPMs drop off and if I hold the accelerator down nothing happens. If I release the accelerator the RPMs jump up a bit for a couple seconds before the problem repeats itself. IT DOES THIS EVERYTIME. After a couple minutes of this problem the engine warms up and she runs great.
I have read a few postings that suggest the coolant temperature sensor might be the culprit. I will try changing this today or tomorrow because it is a cheap part and seems simple enough to change. Does anyone know where the coolant temperature sensor will be located on a 2001 Ram? I have found info on different threads that discuss different locations on Rams that are a couple years older than mine, but from what I have read these older Rams have a sensor and a sender, which I don't think I have.
Any ideas or input is welcome.
Thanks!
Here is my problem.
My 2001 Dodge Ram 1500, with 5.9L has been acting up for quite a while now. The problem is very consistent. The engine starts and runs fine for a couple minutes, then it begins to sputter and hesitate and backfire. The RPMs drop off and if I hold the accelerator down nothing happens. If I release the accelerator the RPMs jump up a bit for a couple seconds before the problem repeats itself. IT DOES THIS EVERYTIME. After a couple minutes of this problem the engine warms up and she runs great.
I have read a few postings that suggest the coolant temperature sensor might be the culprit. I will try changing this today or tomorrow because it is a cheap part and seems simple enough to change. Does anyone know where the coolant temperature sensor will be located on a 2001 Ram? I have found info on different threads that discuss different locations on Rams that are a couple years older than mine, but from what I have read these older Rams have a sensor and a sender, which I don't think I have.
Any ideas or input is welcome.
Thanks!
