What's wrong with my Dodge?

[pb4ugo]

I drive a '99 dedicated Dodge van with a little over 70k on the 5.2L. Yesterday I started it and it was surging bad at idle. I left it and it eventually stopped. Then, when driving, it would sputter when I came to a stop. When driving away, it had NO power. Like I had it floored and it wasn't accelerating at all. I pulled over into a center and shut it down and re-started, and it drove fine on the way back home. I then let it sit all day and tried it again last night and it did the same thing.

I don't know a thing about the CNG fueling systems, so I'm coming here for suggestions. Any ideas what I should look for?

Thanks

[PrairieGas]

Re: What's wrong with my Dodge?

When you try to start you should hear a click first, it is the pressure regulator on the passenger side near the manual shutoff. This might be not allowing the proper pressure out of the high pressure regulator. Be sure you are getting fuel to the fuel rail and low pressure regulator. There are a number of sensors that can shut down the system. Any local friends that can help? Best of luck, keep trying!

[cowboy]

Re: What's wrong with my Dodge?

sounds like it could be the hp regulater filter my van did this it is a 96 I think it was the filter drove me crazy it did all kinds of things ran bad some times than stuter not idle on the 96 it is inside the hpr cant remember what size wrench but not bad to change and I cut the hp inlet lne and put a filter off ebay on it and has run great since this is not like a gasoline filter as it drives the computer crazy and if you let it it will drive you crazy good luck

[kameron13462]

Re: What's wrong with my Dodge?

A couple of ideas:

Bad Idle air control (IAC) valve - would explain the rough idle, but not the lack of power running. Can you start it without giving it gas / throttle?

Isolation Solenoid valve - this lets fuel into the fuel rails up at the engine. I'm having the one on my car replaced because it gets stuck from time to time and the car won't start without tapping it with a screwdriver.

Clogged fuel injector(s) - you could run injector cleaner fluid through the fuel lines via the coalescent bowl.

Bad alternator - remote possibility, would explain lack of power at idle and starting off.

[pb4ugo]

Re: What's wrong with my Dodge?

Thanks for the replies. You guys came up with a number of specific possibilities despite my vague description. After the varied responses, I decided to just pay a shop instead of trying a number of things. Turns out the O2 sensors were corroded and wires were shorting out--resulting in confusion with the injection system.

[Wellarmed]

Re: What's wrong with my Dodge?

If the O2 sensors failed prematurely, then the costs may be covered under the Federal emission warranty requirements, regardless of how old the vehicle is. I believe that the mileage limitation is 75 K, but it may be 100K. I would check on the EPA web site to see what the mileage requirements are. The only catch may be the recent bankruptcy that Chrysler just went through. Good luck

[plenarius]

Re: What's wrong with my Dodge?

so...i have a 95 dedicated cargo van, bought it used from the city and i can only get 8gge in it at the most. thats haveing been totally empty the night before and being towed to the station the next morning before the sun rises. in poking around online i discovered that these vans were to have come 18gge minimum...so whats up? and how do i fix it?
i bought the van to start up a heating and air company and would like to be the greenest around........please help.
p.s. i have 2 smaller tanks where the spare tire would normally go and a longer tank running about 5' long on the drivers side...

[cowboy]

Re: What's wrong with my Dodge?

make sure all the valves are open

[plenarius]

Re: What's wrong with my Dodge?

did that already....thinking i might have a bad valve or preassure sesor/ regulator....does that sound 'bout right?

[plenarius]

Re: What's wrong with my Dodge?

maybe a plugged fuel filter...wheres the filter on this thing...