If I accelerate normally... maybe 1/4-1/2 throttle and it seems to be sluggish but once it gets to a certain speed, it has more power without pressing the throttle any more than it is already. Almost like it catches up with the throttle. Sometimes it dies right after I start it. Pretty sure there isn't a vacuum leak. On a cold start just after leaving park, I'll have to give it excess gas so that it doesn't stall. I haven't changed injectors. Is this possible?

 

Yellow,

Did the "All sensors replaced" in your signature include the oxygen sensor?

Have you cleaned the throttle body and IAC recently? Tested the fuel pressure?

I wouldn't be so quick to blame the injectors without a little diagnosis first.

 

Yes... new O2 sensor. Fuel pump is about 2 years old. The last time I used that throttle body cleaner that sprayed directly into the throttle body, it made my car crank longer before starting. That was before I did all the sensors.

 

COuld it be the Idle Air Sensor. I had a problem in my 88, it would start then it would die. VERY frustrating.

 

Well Ive had similar problems before....Every time it was a fuel problem....As in LACK of fuel......

First thing I would do is get with someone who has either an autoXray or a diacom....Look at the blm numbers and rich/lean indicators when the problem happens and goes away....

ALSO Check the IAC calibration by looking at the counts.....I found that Mine was waaayyy off and because I had it set wrong and HAD my blades on my TB open too wide that the IAC was not able to properly compensate......This cause the BLM to Go way out of the parameters at IDLE untill about 1/3 throttle.....When I dialed everything back in with the diacom that problem went away..... Just a a reference ast IDLE my O2 sensor was PEGGED LEAN...

I kind of doubt you problem is exactly what mine was but what Im getting at is Many things can affect why your car would act like this...Best thing to do is to look at it on a scan tool in real time... Thats how I got rid of my headaches...