Searched around but couldn't find anything that seemed exactly like my problem. About a week ago when i was pulling out of my driveway in 1st gear at around 1500rpms the car started acting like i was letting off the gas completely even though i still had it about a 1/4 of the way in after the rpms fell some it would kick back in like i was flooring it. It only did it in first gear and would stop after it warmed up, on friday it started doing it in any gear if it was under 2000rpms no matter if the motor was warmed up or not, and last night the idle started jumping up and down on me. I replaced the tps about a month ago with a brand new one and the volts are correct on it. I pulled the iacv off today and cleaned it out and that fixed my surging idle problem but the bucking/ hesitating problem is still there. just trying to figure out what i should do now???? thanks

 

Check. (simple to hard)

1. Fuel pump wiring.
2. Check corrosion on plug wires.
3. Check Plugs.
4. Change the fuel filter.
5. Change fuel pump, after testing voltage while friend rev's til it sputters to confirm it's the pump.

Fuel Fire Air

EDIT: If it's the fuel pump is going out, hope it isnt, upgrade to a Walbro 255lph for about $100.


Modified by Since94 at 11:24 AM 9/14/2008

 

fuel pump is fine i checked the plugs and wires yesterday and they still looked just as new as when i changed them 2 months ago. Would it be the fuel filter seeing as how it goes away after 2000rpms and sometimes dosent happen at all?

 

hmm.. ok well try to sand the points down on the cap and a lil bit on the rotor.. and let me know.. who knows.. it could be a fuel filter cloggin. you never know.. but if thats not the case atleast you have a new fuel filter which you prolly needed anyways.

 

yeah it prob does need a new one anyway and dosent cost much, so might as well replace it and see if that works, i'm going to try and adjust the tps voltage a small amount and see if that works aswell.......

 

yeah def adjust the tps a lil.. try to zero it in. post back up and let me know.

 

did u get it fixed? mine does the same thing!