I had posted the other week about a fuel problem. I had it back to the dealer I bought it from. (Not a Dodge dealer). I thought the fuel pump was going out. The truck would buck and stumble like it was running out of gas, or hard to start. They check the fuel pressure and said it was good. They thought the problem might be in the fuel injectors leaking down. But their guess was to switch injectors. Which they even said might not be the problem. I do not get a check engine light and no codes show up when checked. Anyone have an idea?

 

sorry bud but we cant help you with inadequate information ( no truck info, what you're experiencing, or even the link to the original post, even if that has adequate info.) feel free to write a story, as long as we get you back on the road, it's why we're on here in the first place.

 

Before replacing injectors I would remove and check the Idle Air Control motor from the back side of the throttle body. The bucking and stalling could be signs the IAC is either gunked up and not working right or broken altogether. You can try cleaning it but do so gently with a shop rag soaked in carb cleaner, or a new one doesn't cost very much to just replace it. Handle the sensor very gently and do not drop it or you will need a new one regardless. A weak or lazy O2 sensor can also cause the IAC to malfunction. How many miles on the truck, and have the O2's ever been replaced?

A bad IAC won't store a trouble code. There should be no need to reset the PCM after cleaning or replacing it. There are tests you can run and tools you can buy to check the injectors before you go to the expense and trouble of throwing injectors at the truck. The easiest and cheapest is to use a mechanic's stethoscope and listen to each injector with the engine running. A good injector will produce a moderately fast clicking noise on a steady even tempo. An injector that has any different sound should be replaced. If you have no stethoscope you can put the end of a long screwdriver against the injector and put your ear on the handle end and listen that way.

Fox is right, we need more info to really be of any help. Year of truck, mileage, engine and transmission would help us help you.

Jimmy

 

Sorry about that. it is a 2002 Dakota, V6, 60,000 automatic.

 

a bad TPS (throttle position sensor) did that for me it would stumble and fall all over itself it was also a bad PCM but the TPS was bad too. silvercc and my options would both be cheaper to try out first and check

 

60K is early for an O2 sensor failure. I'd consider it early for a fuel system failure too, but anything is possible. If this were my truck I would start with cleaning the IAC and the TB too. Be sure to use a new TB gasket. If ithasn't been done recently, a full tune-up with new plugs and plug wires, dist cap & rotor button may also help.

Jimmy