OK, I've been having this problem ever since I've had the car, and I'm stumped. I though it was a bad fuel pump, but I was wrong. Here is my issue.

Ok the car will start up and run fine when it's cold. Now if I go somewhere, stop the car and turn off the ignition (like when running errands etc.). Then get back in and start it up, it "MAY" give me this problem. But if I stop again and start up it's almost 95% guranteed.

What happens is upon ignition the car will fire (start) and will not start up normally. Instead of the RPMs boosting up to around 1500 under normal fire, they go up to like 1000 then sputter around 400 or lower. Then if I get on the gas and try to drive, every time I through the clutch out to shift the RPMs will quickly fall off, and if I through out the clutch to stop, 60% of the time the car will stall and shut off.

Now, sometimes, if it starts doing this and I rev it up to around 5000 RPMs it "MAY" stop doing this, but it's not guranteed.

Here's what I've changed.

Spark plugs (all eight) with stock copper tips
Spark plug wires
fuel pump (155lb FFRP)

 

i had that problem for a while. fuel system cleaner worked for about 6 months but then it came back. my guess would be dirty fuel injectors. not positive tho, but worth a try to clean them.

 

I've been thinking the injectors myself. Used cleaner and it didn't have much of an effect. In any since I have a nice set of 30lbers waiting to go in later on next week.

 

I would try checking things like,
tps voltage
clean the iac
clean the t/b
mass air sensor
could even be the ignition module.

May even need to have a lok at the data stream for the ecm to see if one of the sensor values is not what it should be. I assume there's no CEL since you didn't mention it.

 

CEL???? That's a new one on me.

I had Firestone do a full ecu check about 6 months ago to try to find the problem and nothing came up, at all. The only thing that poped up was a thermostat code because the previous owner, for whatever reason, removed one of the sensors that works with the thermostat. That fixed one of the problems I had, but didn't affect this at all.

 

CEL= check engine light.

 

Is this a constant problem or something that only happens on the third Tues of every month.

 

Nope, it doesn't trip the light at all.

Also, it happens whenever I start and stop the car multiple times. Happened today, happened once last Saturday, and happened once or twice a couple of weeks before that.

 

id still say its dirty injectors.

 

whine?? grind??