I have a 1985 3.8l FI v-6 that runs great until it gets hot. After the engine gets hot and I take off from a stop or from a very low speed the engine just dies. It gets so slow it is rather imbarasing. But after a couple hundred feet it starts to pick up speed again slowly. It takes a bit to get up to speed but then it is strong until I stop again. I realy need some help on this, it has realy got me stumped. I have changed the fuel filter, plugs, wires, dist. cap and rotor button and the pcv valve. HELP PLEASE

 

No codes coming up? Have you ran injector cleaner through it? How's the air filter?

 

it's a CFI which is pre OBD I so no codes to read.

alot of those cars developed bad injectors plus some have a heating grid between the intake and throttlebody/injectors to eliminate cold start emissions. these tend to clog and make the car low on power. you fuel pump could be going bad which is what i would check first. have a mechanic put a fuelpressure gauge (one that you can read inside the car while driving)on the car and drive it to see if there is a pressure drop when the power loss happens. most likely that is the problem or a bad fuel pressure regulator

 

Could be a bunch of things. Start by changing the fuel filter.

 

buddy of mine was doing similar, turned out his transmission wasnt downshifting into 1st gear , he was taking off in second , sometimes in 3rd gear and was a dog off the line bogging down.seems it would get stuck in whatever gear he was in when he slowed down to stop.

 

Thanks LaStang04!! I was thinkig this might be the problem to. Do you know what your friend done to correct the down shifting???