Low Idling and tries to stall sometimes

Tiny
HARLEY1990
  • MEMBER
  • 2003 DODGE RAM
  • V8
  • 2WD
  • AUTOMATIC
  • 42,000 MILES
My truck is a 1500 4.7. I have replaced the cam sensor, crankshaft sensor, throttle position sensor, the battery, PCV valve, Idle air valve, power steering valve so the dealer said was wrong with the truck! Also, replaced mass air sensor, new plugs, and new air filter!
So what the truck is doing is that at times it drops in idle, and acts like it going to stall. The only thing I can think of is the fuel pump because the small lip in the filler tube that opens when you put the gas nozzle in to add fuel had broken off, and went into the tank. I am not sure if it has began to dissolve or what. I am lost at figuring out the main problem. It does run just fine, and no codes show up. Just now then it will act up, and is nerve racking.
Thanks for your time.
Do you
have the same problem?
Yes
No
Friday, April 16th, 2010 AT 6:41 PM

13 Replies

Tiny
JACOBANDNICKOLAS
  • EXPERT
Have you checked for vacuum leaks? Also, have you checked to make sure the EGR valve is clean and working properly? As far as the tab, it is resistant to fuel so do not worry about that. Also, is (by itself) would not stop fuel from making its way through the pump. Have you replaced the fuel filter? It is a pain because you have to remove the tank. Here is a picture of it:


http://www.2carpros.com/forum/automotive_pictures/249084_fill_1.jpg



Let me know.

Joe
Was this
answer
helpful?
Yes
No
Sunday, April 18th, 2010 AT 10:27 PM
Tiny
HARLEY1990
  • MEMBER
Hey Joe, thanks for the reply. I did a fuel system check, and the pressure was fine. I have checked for vacuum leaks three time, and used a mist of water while it was running, and that was okay. As for the EGR valve goes I have not got to it yet because my truck does not seem to have one at least that what the repair manual says. I have been thinking about dropping the tank, and check the filter, but if the pressure is good I thought that would not be the problem. The only thing I have not changed was the MAP sensor, or the coils. I will try to look for the EGR valve again, and try that, and go ahead with the fuel filter. Again thanks for you time.
Was this
answer
helpful?
Yes
No
Monday, April 19th, 2010 AT 2:43 PM
Tiny
JACOBANDNICKOLAS
  • EXPERT
According to my information, there is one. However, the only thing I could find is the wiring harness to it. Here is a picture of that at least:


http://www.2carpros.com/forum/automotive_pictures/249084_aaa_2.jpg



I do not know if it will help, but it may give you an idea as to what you are looking for.

Let me know what you find.

Joe
Was this
answer
helpful?
Yes
No
Monday, April 19th, 2010 AT 8:46 PM
Tiny
HARLEY1990
  • MEMBER
Okay, I have looked up a EGR valve for my truck at Advance Auto, and O'Reileys auto parts, and even at Dodge, and cannot find one, lol. I cannot even find the wires to it. Could it be called something else than EGR? I know what the word EGR stands for but maybe Dodge calls it something else. I am still looking for it, and looking on sites as to where it is. Some say its under the alternator, and some say it is on the driver side at back of motor? At least I know my engine now, lol. I have been all over that silly thing. I will keep looking, and if you know of anything else let me know thanks. Oh yeah, it is a 2003 Ram 1500 4.7 liter two wheel drive automatic if that will help any more.
Thanks man
Was this
answer
helpful?
Yes
No
Tuesday, April 20th, 2010 AT 3:12 AM
Tiny
JACOBANDNICKOLAS
  • EXPERT
That is what I looked up. Interesting that I could not find the part either but only the wiring. If it has one, it will be on the intake. Let me know.
Was this
answer
helpful?
Yes
No
Tuesday, April 20th, 2010 AT 7:20 AM
Tiny
HARLEY1990
  • MEMBER
Hey Joe, I looked all over the engine for the EGR valve and even called the dealer. They told me that some of the rams have an EGR valve and some do not! I did change the fuel filter or I should say the the pump and filter all one unit. The only other thing I can think it might be is one of the coils. I put a MAP sensor on it also, and all that I have replaced it still acts up so the only thing left is the coils I hope that takes care of it. Or maybe the EVAP? Heck I do not know, lol. I am about to go crazy.
Thanks for your time.
Was this
answer
helpful?
Yes
No
Tuesday, April 27th, 2010 AT 5:27 PM
Tiny
JACOBANDNICKOLAS
  • EXPERT
I would say you have exhausted everything other than a coil. Let me know what you find. If you have luck like I do, it will end up being a vacuum leak. As far as the EVAP system, I do not think it would cause this type of problem.

Let me know how it goes.

Joe
Was this
answer
helpful?
Yes
No
Tuesday, April 27th, 2010 AT 10:33 PM
Tiny
HARLEY1990
  • MEMBER
Okay Joe, I have gone over ever inch of this motor, and all the vacuum lines I could find, and check every inch of them with it idling, and spraying water to see if it idles up, and it does not, lol. I even took off the crankcase breathers, and cleaned them, but they are fine. I do not know what else it could be, and if there was a vacuum leak when it acts up the rpm's would go up right? But it just acts like it is going to shut off at the low idle, and just just keep pumping the pedal to keep it going, and I know the fuel pump, and filters are fine, lol. Just about ready to blow it up. Think it could be the main computer on it? It still gives a code if there is one, but there are no codes when the engine acts up like it does. I will keep trying things, and let you know, and if you can think of anything let me know.
Thanks man, have a good weekend!
Was this
answer
helpful?
Yes
No
Friday, April 30th, 2010 AT 6:41 PM
Tiny
JACOBANDNICKOLAS
  • EXPERT
Wow! Where do we go from here? Have you checked the idle air control valve? Throttle position sensor?
Was this
answer
helpful?
Yes
No
Saturday, May 1st, 2010 AT 1:08 PM
Tiny
HARLEY1990
  • MEMBER
Yeah, well since I have replaced all I can think of including the fuel pump, and temperature sensor, and put new coils on it still wants to idle down, and tries to stall! There is no vacuum leaks, no EGR valve! All I have replaced is at the top of the page, and I am lost at what else it could be doing this. All fuel injectors are working fine the timing is fine. I guess I should just pull the motor, and rebuild it since I have gone this far with it, lol. Only has 45,000 on it for a 2003, and having this issue? I did remember something the other day. Before this was going on it would want to idle up, and you would have to hold the brake to keep it from moving when at a stop. But now it is just, idling down at times and acts like it is going to stall. I hope maybe there is someone with the answer for this problem, because I am fed up, and do not know what it is that is doing this.
Thanks for your time.
Was this
answer
helpful?
Yes
No
+2
Saturday, May 15th, 2010 AT 1:22 AM
Tiny
DEISELFIRE136
  • MEMBER
Hey, I have the exact same problem. People are telling me it could be the idle air or speed control sensor but I have replaced it. I did put some old gas with gas treatment in my tank and I had half a tank of new gas already in my fuel tank before so I highly doubt water in the gas was the problem for me. I have no codes either. I replaced the air filter and had one leak in the air intake behind the Idle Air control sensor towards the right corner. I fixed that with a new hose and tightened everything. Cleaned out all the other sensors and replaced TPS sensor. The truck barely wants to start and when I turn the ignition it cranks up and then turns off. Sometimes it will not even start. The battery I noticed was low and as we speak I have it charging. I was also told if you do not have at least a solid 12 volts on the battery the truck will not be able to start. It needs the battery to feed the injectors electrically until the fuel takes over and the car can run off of the fuel and not the battery. But until you do not get those 12 volts the car will not have enough to start.
Was this
answer
helpful?
Yes
No
Tuesday, February 2nd, 2016 AT 8:37 PM
Tiny
DEISELFIRE136
  • MEMBER
Notice the idle air control valve/sensor and TPS usually fix the problems of Dodge Rams when they stall at stop signs or red lights or even when turning. But in our case it is different. We both replaced the sensors and it is still doing the same symptoms. It has to be something bigger and doubt it if the battery is the only cause. Keep you all posted.
Was this
answer
helpful?
Yes
No
Tuesday, February 2nd, 2016 AT 8:43 PM
Tiny
DEISELFIRE136
  • MEMBER
http://www.justanswer.com/dodge/3aa02-dodge-ram-1500-will-not-start-assuredly-fuel-problem.html

Maybe it is the battery.
Was this
answer
helpful?
Yes
No
+1
Tuesday, February 2nd, 2016 AT 9:11 PM

Please login or register to post a reply.

Recommended Guides