Car is running rough. I took it to local Dodge dealer and they misdiagnois the problem. It cost over $1,000. The car engine has a code of P0172 which I have researched and (below in details)

Asked by Bob Aug 09, 2016 at 01:53 PM about the 2004 Dodge Caravan SE FWD

Question type: Maintenance & Repair

discussed with my long time mechanic. He has checked the vacuum lines and the fuel line. He has also swapped in and out parts that he thought were defected. However the one problem he can't understand is the spark plugs which are new are black in cylinder 1 and 4. The plugs are white in the other ones. Do have any insight on what the problem is ? I am going to try Sea Foam Injector cleaner and run the car at fast speed up the interstate to see if any thing happen. Thank you in advance for any advice.

41,815

Auto_Centric answered 7 years ago

1 and 4 cyl, are running rich bank one BLACK FLUFFY (not wet) deposits don't waste your money on Seafoam..(kerosene) that money could be spent towards repairing the problem! lots of possibly cause for running rich BUT, the plug reading indicates 1 and 4 I would read fuel trim in real time with a real scanner and injector cycle times an oscilloscope can spot a bad injector wave. $1000 and they couldn't isolate the cause of bank one rich ODD with a factory DBRIII scan tool and gas analyzer!

Mark helpful

101,575

KenF answered 7 years ago

Need to know what engine. You show running too rich on bank 1. On most Dodge engines cylinders #1 and 4 are in banks 1 and 2 respectively. Problem may be present in both banks but just detected first in bank 1. Can be leaky fuel rails or individual injectors. Carbon scoring on plugs is a sign of running rich. Could be fuel leak, could be bad coils...

Mark helpful

Your Answer:

Car is running rough. I took it to local Dodge dealer and they misdiagnois the problem. It cost over $1,000. The car engine has a code of P0172 which I have researched and (below in details) 2 Answers

discussed with my long time mechanic. He has checked the vacuum lines and the fuel line. He has also swapped in and out parts that he thought were defected. However the one problem he can't underst...

2004 Dodge Caravan SE FWD

-

Maintenance & Repair
I paid $1,200 for a motor and labor. I picked the car up twice and had to take it back because the car was stopping in the middle of the road, and skipping. When I went to pick the car up Friday they charged me an extra $350.00 but never told me they were charging extra. I am I required to pay this extra money for work I did not authorize? 4 Answers

I paid $1,200 for a motor and labor. I picked the car up twice and had to take it back because the car was stopping in the middle of the road, skipping and the air was not working. When I went to pick...

2006 Dodge Caravan SE FWD

-

Maintenance & Repair
I have a 2006 Dodge Caravan. It started then stoped, then started, and now I cannot start the engine? 3 Answers

I have a 2006 Dodge caravan. I started it, then the engine stop running. Then I started it again, and now I cannot start it at all.

2006 Dodge Caravan SXT FWD

-

Maintenance & Repair
i have a 1999 dodge caravan 3. 0L 6cyl and it wont stay running unless u put your foot on gas til its warm, then when u drive it stalls when u stop or turn a code came up for tp sensor and we replaced that, it still doing it we have put new fuel filter on, injuctor cleaner and heet in, it runs rough and the exhaust sounds terrible, we cant figure this out. 3 Answers

the service engine soon light was on and now off, sometimes its black smoke or white coming out of exhaust, we had the map sensor checked and 02 sensor its got dual doors on van and its just a carava...

1999 Dodge Caravan FWD

-

Maintenance & Repair
My 2006 dodge caravan xied. The engine light came on and then died. I hooked it up to a xevice which said then ca sensor and position sensor was bad . I was told they were the same thing. I change it but it still doest't start. What cluld cause this? 2 Answers

2006 dodge caravan won't start

2006 Dodge Caravan SE FWD

-

Maintenance & Repair

Looking for a Used Caravan in your area?

CarGurus has 4 nationwide Caravan listings and the tools to find you a great deal.

Used Dodge Grand Caravan

128 Great Deals out of 2,018 listings starting at $2,995

Used Toyota Sienna

47 Great Deals out of 631 listings starting at $2,499

Used Chrysler Town & Country

4 Great Deals out of 113 listings starting at $3,400

Used Honda Odyssey

35 Great Deals out of 836 listings starting at $2,495

Used Ford Explorer

63 Great Deals out of 2,041 listings starting at $6,990

Used Ford F-150

314 Great Deals out of 13,742 listings starting at $3,800

Used Chrysler Pacifica

26 Great Deals out of 750 listings starting at $15,995

Used Dodge RAM Van

1 listing

Used Dodge Sprinter Cargo

12 listings

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.

Car is running rough. I took it to local Dodge dealer and they misdiagnois the problem. It cost over $1,000. The car engine has a code of P0172 which I have researched and (below in details)

2 Answers

Your Answer:

Looking for a Used Caravan in your area?

Shortcuts

Search Dodge Caravan Questions

CarGurus Experts

Find great deals from top-rated dealers

Related Models For Sale

Car is running rough. I took it to local Dodge dealer and they misdiagnois the problem. It cost over $1,000. The car engine has a code of P0172 which I have researched and (below in details)

2 Answers

Your Answer:

Related Questions