So,

I have a 97 1500 sport with a 318.

If this has already been asked, I appologize. I couldn't find it.

Under heavy acceleration my truck has a lack of power and when it reaches a certain RPM it stalls. More like bucks. The engine keeps running but it's like it's loosing all fuel for a second. When I "baby" it, It runs fine. I've heard it could be the fuel filter. I really don't want to drop the tank until I have no other options. I've changed the plugs, wires, cap. I found no vacuum leak.

I've pulled the codes on it and I'm only getting transmision faults. The funny thing is I have a manual tranny and the codes apply to an automatic. This was from a cheap scanner. Autozone's reader was a little different. Their advice was to replace the computer. Both scans said nothing about O2 sensors. I wacked the H3ll out of the converter thinking it could be stopped up. It didn't help.

Has anyone experienced this and if so what was it.

 

Stock cat? Stock 02 sensors? Last tune up?

 

Both stock I assume. I haven't changed them myself. Motor was rebuilt about 20k ago. Tune up...Not since I've had it. Got the truck in March.

This truck has 260k on it.

 

BTW.... I've put less than 5k on it.

 

bad plenum gasket?

look into the TB and see if theres oil. if there is, its bad. and the oil that gets sucked into the manifold can clog up the CAT

 

I would check the cat if its plugged it could cause this problem

 

I'm not a complete noob to repairs as I did alot of work on the transfer case. Replaced water pump, alternator and a list of other things. Is there an easy way to check to see if converter is plugged? I'm lazy when it comes to searching forums. I can never seem to find what I'm looking for.


THANKS!!! to all that have responded so far. I will take a look at the tb when I get a chance. Probably this weekend.

 

Wouldn't it smoke if this were the case?

 

ok so... weird thing happened this morning. It was about 40 degrees when I went to work. When I got on it with the truck cold it had all the power, didn't choke out or stall, or buck. Any thoughts?

 

move to alaska?