Had a clogged cat that caused no acceleration to the car, i cut it off and replaced it with a straight pipe. then the fuel pump went and i replaced that. i also noticed the the sensor that controls the electric fan is broken, the fan runs all the time, don't know if the previous owner set it up that way. but now the problem is the car doesn't feel like it wants to accelerate above 40 or 50 its losing power, and you got to put the pedal to the floor. car also stalls after driving it for a while then coming to a stop, but it will start right back up again.

Any suggestions?

 

Is the ses light on?

 

yes the SES light is on, i dont remember the exac`t code but 1 was for the oxygen sensor, I have one but will it do anything without the cat on the car and i believe the other is for the tps

 

TPS plays a big part in how the engine runs you should get that fixed. o2 sensors aren't that expensive to replace it should act the same with or without a cat. IIRC I believe the TPS should be set to .54 volts at idle you can adjust this by using a digital multimeter when you have the multimeter hooked up it should rise or lower steady as you move the little lever that is moved by the throttle body if the numbers on the multimeter change while it's still then you probably have a bad sensor and need to replace it.

 

If it stalls when coming to a stop you should also look into the idle air valve. Mine would stall every time I would get below 15mph at one point when the proper idle was not set.

After I set the proper idle it never did it again.

 

Two more things can cause a stall when coming to a stop:

1. A stuck-open EGR will also cause a stall when coming to a stop- that is, if you're stopping after a "high speed, low throttle" situation (example = you were cruising easy on the freeway, and then took an exit and came to a stop sign). When the car stalls, the EGR valve closes, and then the car runs normally until you get up to a high speed/low throttle situation again.

2. Automatic transmissions with 700r4; a sticking TCC (torque convertor clutch) solenoid can cause a stall- that is, if you're stopping after the TCC engaged (35-40 mph with light throttle/warmed-up engine). The TCC fails to disengage and it's basically like coming to a stop with a manual transmission without pressing on the clutch. When the engine stalls, the TCC releases, and the car runs normally until the TCC engages (and can't disengage again).

3. IAC valve/passageway may be carbon'd up and just need cleaning.

As the guys said, definitely fix the trouble codes first. If the cat was clogged I'd try to check the rest of the exhaust for pieces of the cat's pellet bed; your exhaust may still be blocked. For the fan, is the a/c hooked up, specifically, the high pressure switch's connector (on the aluminum tube that's bolted to the passenger side main frame rail)? Since the fuel pump died, have you also double-checked ignition timing, spark, and the spark plugs?

 

thanks for all the resposes. this is my sons car and i wish we were still using carbs, points and condesors, i can figure out all the other stuff and its frustrating. would it be difficult or problematic to put in a different motor with a carb and eliminate all the sensors and stuff? car only has 75K on it but it sat for a while. when we first got it i had to put in a new heater core, full tune up and 1 of the fule injector wiring had to be replaced cause it was fried.

Thanks for all the suggestions again

 

You could put the top intake and all off a older 2.8 and convert it to carb but IMO it's not really worth it. You could also drop a v8 in but that get's costly being you need to change a lot of stuff like the tranny, radiator, hoses and so on. Your best bet would be to try and fix the problem you have now these engine will last for a VERY long time properly maintained and will give you very little trouble. My car sat for 10 years I got it in January within a month I had it running close to perfect once I replace the MAF and dizzy, It'll run like new

 

It's a lot easier & cheaper to try the things we suggested

(PS: Carb'd v6 had 102 horsepower, Fuel Injected v6 had 135 horsepower- you'd rather go back to the carb?)