dodgeram082500
New member
- Joined
- May 4, 2009
- Messages
- 208
Had a question for some of the 4th gen guys. I have a 2010 manual bone stock other than an airdog. a few weeks ago I noticed that the rp was acting odd. by odd I mean after you first start it if you immediately take it on the road and beat on it the rail pressure is fine, but if you continue to beat on it cold or warm then the rp will drop (not only at wot but cruising too). Also another thing is if you just idle the truck for a while and then get it on the highway and beat on it it will keep up for a minute ,but then start doing the same thing. I've seen my RP hit as low as 6ksi cruising.
A couple of important facts 1. the P0089 Low RP code has come on a couple of times and also a #6 injector misfire. 2. this happen when the mini maxx is on any setting. All defuels are off on the minimax. Its to repeatable to be electrical.... This thing acts Like the ECM "thinks its supposed to do this". We have even tried to force it to make pressure with custom tuning (bumping the RP maps) ,but it doesnt matter if its on stock, H&S, or MCC tuning it does the same thing.
Here are what I've tried so far:
1. check FRV by plugging it.
2. change the fuel rail with the one on my drag truck
3. change cp3 with the one on my drag truck
4. taking the airdog out of the link and used the working stock system (Airdog put out 12 PSI and stock pump put our 7-8)
5. changed all fuel filters
6. Have check/retorqed all fittings from the rail to the head
Still does the same thing???
Any help?
Thanks in advance
A couple of important facts 1. the P0089 Low RP code has come on a couple of times and also a #6 injector misfire. 2. this happen when the mini maxx is on any setting. All defuels are off on the minimax. Its to repeatable to be electrical.... This thing acts Like the ECM "thinks its supposed to do this". We have even tried to force it to make pressure with custom tuning (bumping the RP maps) ,but it doesnt matter if its on stock, H&S, or MCC tuning it does the same thing.
Here are what I've tried so far:
1. check FRV by plugging it.
2. change the fuel rail with the one on my drag truck
3. change cp3 with the one on my drag truck
4. taking the airdog out of the link and used the working stock system (Airdog put out 12 PSI and stock pump put our 7-8)
5. changed all fuel filters
6. Have check/retorqed all fittings from the rail to the head
Still does the same thing???
Any help?
Thanks in advance