1QWIK7

iTrader: (33)

Yeah, new problem since about 2 weeks ago. Just came out of the blue, i didnt touch anything on the car.

Anyway, when cold (well not even cold but not operating temp), the car will BUCK, and i mean BUCK when coming off of a stop or even 1/8 throttle off any gear.

I cant even get out of my driveway because the car will buck, i cant not even step on the gas a bit to go slow cause the car will buck.

So what i discovered is, i have to WAIT for the car to really warm up (about 130F or better on the temp gauge) before the bucking clears, then everything seems about normal.

A little info about the car.

Battery relocated to the hatch (3 grounds off the battery)
Alternator has a ground to the strut tower
UIM has 3 grounds (the thick main one, then 2 added by me, 1 to the strut tower and the other to the chassis below the air filters)
DP
PFS catback

The problem just came out of the nowhere, last thing i did was an oil change but that was 2 weeks before the problem occured.

Only thing thats POSSIBLE is the gas. Last time i gassed up was beginning of may and i used HESS 93, car has slightly below 1/4 tank so im assuming HESS gas is cheap and after about 3 months of the same gas, it got worse.

Anyway, i put 20 dollars today with shell V-POWER

I hope that helped but any ideas of what the problem may be, ill appreciated it.

Thanks

jkstill

iTrader: (11)

TPS adjustment. My FD was bucking pretty badly before setting the TPS.

It seems to be a common ailment on the FD.

supraturbo1987

iTrader: (4)

On the TPS adjustment...does the car have to be at operating temp to adjust the TPS to the proper voltages? Also, when you guys are adjusting, are you trying to get your voltages right in the middle of the high and low values that are recommended by the FSM?

Trev

1QWIK7

iTrader: (33)

Does the TPS just go out of whack out of nowhere?

Cause i had my TPS adjusted last november, i havent touched it since.

gracer7-rx7

iTrader: (16)

Stock ECU?

What kind of voltage readings are you seeing?

1QWIK7

iTrader: (33)

Sorry, yes stock ecu.

And i havent tested the TPS because that was already adjusted for me last november, i didnt think it got out of whack.

Because the problem only started 2 weeks ago.

1QWIK7

iTrader: (33)

Bump