PLEASE HELP, MY 240 IS SCREWED, JERKY AS HELL

[SOHC1allday]

already posted this three times and of course no one knows wat to tell me

the old post is below, im just shooting air but i was wonder could not enough transmission fluid cause my car to be jerky as hell?

if someone says fuel problem, that makes no sense for the car to be perfectly fine in neutral, its gotta be a sensor or that^

but read below to understand more PLEASE HELP!!!!

drove home ok when i bought it. took it on a hour drive started problem in 5th gear cruisin 55 at about 2800 rpms, it started jerkin like hell rpms jumpin up and down, i slam the gas and it goes fine until you let up a little on the gas then its jerky as hell again, then when i slowed down, first gear all the way to fifth are screwed can barely go anywhere while im getting whiplash from jerking so much haha. its perfectly fine in neutral, sometimes it only jerks when its warm, sometimes it will do it when its cold.

got new MAF, water coolant temp sensor, plugs and wires, distributor cap and rotor, auto ecu. still screwed only code its showing is air intake temp sensor, but i really dont think thats it because i accidently pulled out the sensor wires when i was changing the MAF, and it had the problem before that? but may of already been going bad? can the air intake sensor cause all of this? dont know wat the hell to do anymore SOMEONE PLEASE HELP ME!!!!!!

[SOHC1allday]

just went and disconnected my friends air intake temperature off his 240 to see if it would make his car bog out took her on a route and didnt cause any problems to his car.

I REALLY DONT KNOW WAT TO DO GUYS!!!!! SOMEONE JUST THROW ROCKS AND MAYBE WILL HIT SOMETHING, HELP ME OUT GUYS!!!! ANY MORE GUESSES????

[Cone Junky]

Check your fuel pressure and O2 sensor. It could easily be a fuel problem.

Just because it runs fine in nuetral, doesn't mean there is enough fuel under load.

[chicos240]

So you replaced

got new MAF, water coolant temp sensor, plugs and wires, distributor cap and rotor

To alleviate the problem and nothing helped?Not even little bit?Have you checked your vacuum lines?

[fleali88]

its your throttle position sensor, i promise, mine did exactly what yours does, and the ecu didnt throw a code until it got bad. unplug the connector/s fro the throttle body and your car should idle, it will idle either too high or too low, but it will be steadyish, and not jerk. you need a new one though.

[ShaunakaRichard]

I second saying its a fuel problem. That's exactly what happens when your motor stops getting enough fuel. It bucks. You can rev it all you want in neutral, but that doesn't take much fuel. Driving it, putting a load on it, is when the motor needs lots of fuel. It could be a clogged fuel filter, don't think I saw you replaced that. Could also be the fuel pump. Never mentioned how old your car is but its probably around 17 years old. Fuel pumps don't last forever.

I'd replace the fuel filter regardless, they're cheap. Most of the time that'll be the problem. I've run into it a few times in a few different vehicles showing your exact symptoms. Don't just think its not a fuel problem because it revs in neutral. Revs and fuel amount aren't equal, amount of fuel to the Rev changes with load.

[fleali88]

doesnt the tps assist(with other sensors of course) in fuel delivery by telling the ecu how hard they pedal is pressed and in return telling the ecu how much fuel is needed. i still think its the TPS.

[SOHC1allday]

thank you guys so much, im gonna screw with the TPS tomorrow and see wats up. i just need to get it running so i can get some more money get new fuel pump, pressure regulator, than a AFC NEO fuel management system to drop in the 370cc Deastchwerks injectors i got sittin in my room hell yea, thanks again guys

[allenms240]

I third fuel issue. Fuel filter then fuel pump

[SOHC1allday]

your the s*** man!!!!! just made my day!!! TPS screwin s*** up. took her for a 20 minute ride not a single jerk or bog!!!!!! goin to go get a new one now

GET SOME!!!!!!

[SOHC1allday]

its your throttle position sensor, i promise, mine did exactly what yours does, and the ecu didnt throw a code until it got bad. unplug the connector/s fro the throttle body and your car should idle, it will idle either too high or too low, but it will be steadyish, and not jerk. you need a new one though.

THANKS FLEA!!!!!

[NicUzumaki]

just be careful, when you put a new tps in it has to be properly adjusted,you wont notice a huge difference if its not because the ecu will try tocorrect the error but it could make it run to rich or lean,you need a sewing needle and a multimeter and you stick into the back of the plug on the tps, white wire i beleive and and ground it, and you want something like .45 volts?dont quote me on that its been a while!but is plenty of forums out there to help,

also my car did the exact same as yours, changed the tps, car wouldnt run,fuel pump went at the same, the ka24e all burn thru the stock fuel pump, super easy to swap though

good luck