also, the replacment that i got was from 91 coupe. between 91 to 92 has type I either coupe or sedan. from 93-95 the coupe had typeII...rite?

 

I think it was 94 on that had the Type II engines

 

Change your fuel filter lately?

 

you aren't giving enough data for us to help you. For example, our spark plugs are designed to last years and well over 60,000 miles. However when spark plugs wear the gap opens up. That causes the voltages to build higher which can cause breakdowns in other places, such as carbon tracking. What you are decribing, if it occured at high rpm and under load could be plugs.

When a Cat gets leaded fuel during its lifetime it can fail. When it fails, the honeycomb can become plugged. That will show up as increased backpressure. That backpressure is greater at higher RPMs and load. That will cause it to feel like it is starving out.

The list is endless, and it includes as the prior post suggested, a bad fuel filter.

 

i did the tune up recently(sp, fuel filter)
it varies when it happends. high rpm,low rpm. it doesnt happen all the time.
also,(different prob) after i changed the tb, i noticed that around 25ish mph, when i let go of the gas, it seems like the engine is gettin choked,(feels like some1s pressing the brake,)then after about 5~10secs it will go back to normal. i press the gas again, then let go, same stuff. yes i did cleaned the tb before i got it back on,unless theres a special way.(got a tb cleaner, brush, and spray and scrub and wipe...)
thanks again guy...

 

hey johnny, good luck with the car, I sent you a PM, hit me back when you get a chance.

 

hey johnny, good luck with the car, I sent you a PM, hit me back when you get a chance.

i didnt get a pm...take care

 

Did this start after the tune up or was it the reason for the tuneup?

You say this is intermittent at all rpms? Have you considered a small amount of water may be in the gasoline causing it to stumble at times? You might try adding a fuel drying agent (usually alcohol). It is pretty cheap in most parts stores and less than $2.

 

i will try that but i doubt it, i drive till thetank is really empty(below the red line)
also, i dont remember when it started to happend, but i think i remember it was fine after the tune up. just out of da blues.
thanks again

 

ok, i did add the fuel treatment for water.
i think its not gas cutting off, i think its mis-firing.
like i said, its not constant, just once in a bleu moon
thanks in advance