Aug 7, 2015, 01:50 PM
Last edit by: IB Advertising
See related guides and technical advice from our community experts:
Browse all: Engine Diagnostics
- Dodge Ram 2nd Gen Why is Truck Backfiring
Guide to diagnose trouble and recommended solutions.
Browse all: Engine Diagnostics
Loss of Power/ Hesitation/ Backfire
Record Breaker
Joined: Aug 2011
Posts: 1,095
Likes: 1
From: Southern Massachusetts
Did you completely ignore my posts?!?! ANSWER: NO!A step in the right direction would be checking your plenum.
It's very unlikely that the MAP sensor is your problem, however checking the specs on it wont do any harm. And I doubt your trucks imaginary MAF sensor is the problem...
Hissing, aka vacuum leak, will also cause running/driveability problems. Check all the vacuum lines coming off the intake, they should be in great condition and be connected to something on both ends. If your missing the gasket between the air hat and the throttle body, it'll also hiss. I would guess since you remove the air hat to look down the TB, you didn't put the gasket back on.
Banned Goober Smoocher
Joined: Jun 2010
Posts: 8,916
Likes: 1
Well, my comment is pretty constructive considering you didn't say you replaced them.
You never made any mention of putting them back in, so of course I'll go ape.
It doesn't help that I'm tired too....
You never made any mention of putting them back in, so of course I'll go ape.
It doesn't help that I'm tired too....
Rookie
Joined: Mar 2009
Posts: 56
Likes: 0
Pull the pre-O2 sensor leave it out and run it and see if it doesn't get better temporarily of course. I had the exact same symptoms and turns out it was the cat bad...could be you have a host of issues...plenum so bad that it has alread dirtied the new cat???? worth a try
Captain
Joined: Jun 2010
Posts: 556
Likes: 2
From: San Antonio,Texas
I would get another TB gasket and a can of cleaner, pull the TB, give it a good cleaning and look down the keg when you got it off to see for oil pooling.
What do you guys think about using a cell phone charger to check a crank sensor on the bench?
What do you guys think about using a cell phone charger to check a crank sensor on the bench?
Thread Starter
|
Registered User
Joined: Feb 2013
Posts: 18
Likes: 0
Done the plenum yet? https://dodgeforum.com/forum/2nd-gen...um-thread.html
As for the charcoal canister, how do you know "its done for?" It's part of the evap system and if the purge solenoid is having trouble purging the canister would bet there would be a code set, such as a p0441. You're gonna have to make sure everything in the evap system is working; components and vacuum lines.
Engines don't hold "vacuum pressure", and the canister wouldn't have anything to do with that anyway...not sure where you were going with that.
If your truck isn't getting ~49psi of fuel, it'll cause starting problems in addition to loss of power and hesitation etc. Get a gauge and test it.
As for the charcoal canister, how do you know "its done for?" It's part of the evap system and if the purge solenoid is having trouble purging the canister would bet there would be a code set, such as a p0441. You're gonna have to make sure everything in the evap system is working; components and vacuum lines.
Engines don't hold "vacuum pressure", and the canister wouldn't have anything to do with that anyway...not sure where you were going with that.
If your truck isn't getting ~49psi of fuel, it'll cause starting problems in addition to loss of power and hesitation etc. Get a gauge and test it.