kellyrene

I've gone through this forum and I've not been able to find a good solution. I've been having problems with my car for a while. Its a 95 sc400 with 168k My Trac off, ABS, Trac lights are on. I have replace all the wheel sensors, and I've checked the fuses and relays. And ever since these lights have been on, my car has been running like crap. It bucks and kicks and stalls out at random times. I'm at my wits end with the car right now. I've put so much work into it so far. I've replaced the plugs and wires, fuel pump, fuel filter. And so much more. I just want it to run right.

The check engine light isn't on. It does come on when the car runs rough but it goes right back off..

And then the A/c quit working a few months ago on top of all it. lol I can't catch a break with this car.

Anyways, if any one has some suggestions please let me know.

6SOARER

iTrader: (20)

I do not have a SC400 but try jumping TE1 and E1 in the diagnostic port to see if you have any codes stored.

That's where I would start, good luck.

SC400slide

iTrader: (11)

6soarer is right, Look for codes when the light pops on. Bucking and kicking and stalling out could be many things.

1JZPWRD

iTrader: (59)

Did you reset the ecu after the sensors were repalced?

I bet the other two are caused by the four 02 sensors. Front bank on both sides and the rear both banks. If your cats are clogged this also could be a contribution to your roughness. The car can't breathe.

The other item is a bad maf or iacv. Maybe a good cleaning of the two might do the trick. There are many threads on this problem. Kicking and bucking is a sign to me for a bad maf or your 02 sensors.

Last issue is a bad ecu altogether.

Check for the fuel ecu mod. Do a search and do that and how the car reacts. Post your findings.

1JZPWRD

iTrader: (59)

Also try unplugging the maf and then start the car and see if the bucking goes away.

GroHZ30

Reset the ecu and might as well check the efi relay. If those won't help check rotors and caps. Also does your car has idle issues?

Ali SC3

iTrader: (10)

gotta start with pulling the codes unless you want us all to keep on guessing.