Something is wrong, can't pinpoint it..... -

Go Back > Dodge SUVs > Dodge Durango > 1st Gen Durango
Reload this Page > Something is wrong, can't pinpoint it.....
1st Gen Durango 1998 - 2003 Durango's

Something is wrong, can't pinpoint it.....


Old 04-16-2012, 08:48 PM
adukart is offline
Record Breaker
Thread Starter
Join Date: Jun 2011
Location: Bismarck, ND
Posts: 1,978
Default Something is wrong, can't pinpoint it.....

Ok I'm stumped. Recently I did the kegger mod and fixed the plenum. It was really bad, completely blown out in two spots and consumed about 2 quarts in 500mi. Now I know I need a new IAC but it feels like the timing is off when the peddle it all the way down. It has a noticeable miss-fire when accelerating at 1/8-1/4 throttle in 4th gear and I have lost 10mph in the 1/4 mile (embarrassing cause my buddies tuned blazer can now keep up). It shutters between 2500-3000rpm at WOT and just won't go past 3000+ rpm (those with 5.9's now the awesome power in this range). The exhaust smells rich, possibilities I have thought of:

1) Fouled Plugs (will be checking these on thursday)
2) Original coil could be going bad
3) O2 sensor (original, truck has 168k now and all that oil burned recently)
4) Cam sensor

And of course NO CODES!!!!!!!!! Typical eh? I need this truck in tip top shape cause I feel guilty otherwise, all help and suggestions appreciated.
Reply With Quote
Old 04-16-2012, 09:20 PM
Russ50 is offline
Join Date: Feb 2012
Posts: 206

I would say check out the timming on it an with that many miles an if ya been pulling good size loads with it then Ya mite need to put new timming chain an gears in er,,
Reply With Quote
Old 04-16-2012, 09:33 PM
adukart is offline
Record Breaker
Thread Starter
Join Date: Jun 2011
Location: Bismarck, ND
Posts: 1,978

I've thought of that but it happened within the 4 weeks prior to and 2 weeks since the plenum fix. Distributor?
Reply With Quote
Old 04-16-2012, 09:39 PM
DomsDodgeDingo's Avatar
DomsDodgeDingo is offline
Join Date: Jun 2011
Location: "Thumb" area in Michigan
Posts: 197

Well if you know you need a new IAC Id start there...
Reply With Quote
Old 04-16-2012, 11:25 PM
mikeismadness's Avatar
mikeismadness is offline
Join Date: Jan 2012
Posts: 473

Kensai and I were messaging back and forth not to long ago, he seemed to almost have the same issue he had, with no CEL. He replaced the Map sensor an said he gained a lot of response and a little power back. Maybe look into it, and replace the IAC.
Reply With Quote
Old 04-16-2012, 11:50 PM
RollerRed is offline
Join Date: Oct 2011
Location: Milton, Wa
Posts: 395

I know this might sound stupid...but did you reset the PCM when you finished all that work?
I would replace the MAP and IAC and then reset the pcm and it should run new...Well hopefully.
Reply With Quote
Old 04-16-2012, 11:55 PM
master tech's Avatar
master tech
master tech is offline
Site Moderator & Tech
Dodge Forum Moderator
Join Date: Apr 2007
Location: San Bruno ,Ca
Posts: 10,847

Did you have the dist out when you replace the intake manifold gaskets? If you did, you maybe off a tooth.
Reply With Quote
Old 04-17-2012, 12:33 AM
adukart is offline
Record Breaker
Thread Starter
Join Date: Jun 2011
Location: Bismarck, ND
Posts: 1,978

Yes I reset the PCM right after the work was done. No the distributor was not removed or touched during the intake repair. I should have mention just put in new wires, cap/rotor, and tps in the last 1000miles. Plugs only have 15k on them. Not to sound stupid but is the MAP the same as the cam sensor or am I totally confused . I may be making a parts run on weds per your guys suggestions, thanks again
Reply With Quote
Old 04-17-2012, 06:44 AM
bwdakrt's Avatar
bwdakrt is offline
Record Breaker
Join Date: Dec 2008
Location: Claremont NC
Posts: 1,201

The timing is controlled by the PCM and can not be adjusted.

The MAP sensor is on the front of the TB...the flat looking plastic piece. I'm assuming you also cleaned your TB while you had the intake off for repair. The most overlooked item that really needs to be checked and cleaned on the TB is the vac ports...the small one that leads to the MAP sensor and the other larger one to the evap system. Spray carb cleaner and compressed air will normally work fine.

If you were burning that much oil I'd say your O2 sensors are shot and your plugs are covered in black crud. Even though there's no codes all that oil on the tips of the sensors will give false readings and the PCM will dump fuel into the engine.
Reply With Quote
Old 04-18-2012, 06:03 PM
hydrashocker's Avatar
hydrashocker is offline
Hall Of Fame
Join Date: Jun 2005
Location: GJ, Colorado
Posts: 14,216

No the distributor still has to be on the right tooth so that the PCM can advance and retard the timing, so yes it can be "Indexed" but it not quite timed like older vehicles. I have a thread in the DIY that illustrates how to do it.

However I think you should replace your spark plugs. Go get some Cheapo Champion Copper plugs and gab at .040 before install. 15K on a set is good to my standard for those plugs, not to mention that you burned that amount of oil with them so you probably have deposits on them anyway. Also give it a Seafoam Shot in the fuel tank to help clean the cylinders and valves, also good for injectors anyway.

Lastly look at the CAT and see if it is red when at full operating temp, if it is it could be partially blocked because of all the oil burned.

Also a new before CAT sensor is waranted, you should have one on each down pipe. I buy them at and get the OEM style. I only buy the Desno or the NTK, usually I only get the Desno as they are 2-1 priced there. Search for coupons and you can get 5% off at checkout to help with shipping.
Reply With Quote

Related Topics
Thread Starter
Last Post
2nd Gen Ram Tech
11-01-2015 03:57 PM
2nd Gen Ram Tech
10-15-2015 07:44 PM
2nd Gen Neon
10-10-2015 02:28 PM
Dodge Caravan
10-05-2015 11:58 AM
1st Gen Dakota
09-27-2015 09:07 PM

Thread Tools
Search this Thread
Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump

Featured Sponsors

All times are GMT -4. The time now is 10:26 AM.

  • Ask a Question
    Get answers from community experts
Question Title:
Your question will be posted in: