I bought this Dakota for a good price, It's been sitting for close to a year.Only 89,000 miles. It starts, but runs real rough. I've checked compression, got spark at all cylinders. When I look down the throttle body, it looks as though it's just dumping fuel down there... might explain why the catalytic converter was glowing after a few minutes. Can anyone give me some troubleshooting tips? Do I need new injectors? ecu? new gas in the tank? I'm lost at this point.

 

was she running like that when you got it if not than try new gas and cleaning your throtle body well with carb and choke cleaner befor you look atnew injectors

 

I know Dodge isn't Mitsubishi, but the concept of injectors and acomputer controlling the fuel based on O2 sensor feedback isn't anything new. Injectors can stick open, you could have them cleaned and balanced (or in the case of one injector, cleaned) by an injector company (like RC engineering in Southern California)

Fuel trims in the computer increase or decrease overall fuel delivery based on the O2 sensor. When the Sensor dies, they typically go "Safe" meaning the signal is interoperated as "lean" so the computer compensates by adjusting the trims to add more fuel, resulting in "Rich" burn causing carbon buildup. If you can hook your Truck to a diagnostics scanner, you should be able to get some info about the health of your o2 sensor. It may just need to be replaced.

A glowing CAT from prolonged fuel buildup can clog, and cause back-pressure to the head that will eventually burn out an exhaust valve, so heat is bad, mmmkay.

Justin