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dodge 3.9 running issues #746616
March 26th 2019 7:25 am
March 26th 2019 7:25 am
Joined: Dec 2018
Posts: 10
Swansea
M
MAIN64 Offline OP
stranger
MAIN64  Offline OP
stranger
M
Joined: Dec 2018
Posts: 10
Swansea
Hi guys,
wondering if anyone has any ideas about my running problems.
i have a dodge 3.9 v6 1992 fuel injection. it keeps cutting out and wont run for very long. it seems like something electrical is shutting it down rather than it running out of fuel. it start straight back up but doesnt idle for more than a minute or 2. there is also a lot of condensation/water from the exhaust. i have changed the fuel pump and filter.
any ideas on where to look next?

Re: dodge 3.9 running issues [Re: MAIN64] #746712
March 28th 2019 9:01 am
March 28th 2019 9:01 am
Joined: Feb 2018
Posts: 70
Seattle, Washington, USA
R
RichardB Offline
journeyman
RichardB  Offline
journeyman
R
Joined: Feb 2018
Posts: 70
Seattle, Washington, USA
Since it’s shutting off/running after two minutes that tells me there is an issue with the computer using O2 sensor signal. The signal is incorrect and the computer can’t figure out correct amount of fuel. So you could have a bad O2 sensor.

The condensation (water and white smoke in exhaust) actually worries me. Is the van using coolant? You could have a blown head gasket leaking coolant into one or two cylinders. Which can cause water in exhaust, and drivability issues like you describe.

I would pressure test the cooling system. And the O2 sensor. You should also pull your spark plugs, if you have a head gasket issue the plug on the blown cylinder will be cleaner than the others.


- Rich


1991 Dodge B250 Zephyr Conversion. "Bi-frost" 74,000-ish original miles and counting.
- 318TBI; has headwork and other bolt on upgrades. Runs strong and smooth!
- Powertrax locker
- Rear air springs, ride control shocks all around. Steering stabilizer.
Re: dodge 3.9 running issues [Re: RichardB] #746982
April 04th 2019 9:00 am
April 04th 2019 9:00 am
Joined: Dec 2018
Posts: 10
Swansea
M
MAIN64 Offline OP
stranger
MAIN64  Offline OP
stranger
M
Joined: Dec 2018
Posts: 10
Swansea
ok thanks for the info. ill look at the o2 sensor first.


Moderated by  Astro, Ram4ever 

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