Can anyone help me with a stumbling prob?

Busted Knuckles · 12-23-2007, 06:58 PM

I got my '88 Supra N/A as a hand-me-down from my dad last year. I've been drooling over this car for 17 years before he just gave it to me. It's been meticulously maintained, and barely shows any of the 235,000 miles the odometer reads.

But, I've got a problem. The computer shows no codes, but when I accelerate a bit hard, it will stumble until it hits 2200 RPM. Then the torque hits like a hammer, and away I go. The car idles fine. But, I can get it to stumble out of gear by just revving it. This happens when the car is fully warmed up. The best way I can describe it is like an old carbuerater that needs overhauling. But I have OEM EFI.

I was chasing a problem when I first got it (wouldn't pass emissions), and have replaced the MAF sensor, CTS, Fuel pressure regulator, and O2 sensor. As I mentioned, the computer is giving me no codes. Anyone have any ideas what to look for?
Thanks.

12-23-2007, 06:58 PM	#1
Busted Knuckles 12psi boost Join Date: Dec 2007 Location: Atlanta Posts: 300	Can anyone help me with a stumbling prob? I got my '88 Supra N/A as a hand-me-down from my dad last year. I've been drooling over this car for 17 years before he just gave it to me. It's been meticulously maintained, and barely shows any of the 235,000 miles the odometer reads. But, I've got a problem. The computer shows no codes, but when I accelerate a bit hard, it will stumble until it hits 2200 RPM. Then the torque hits like a hammer, and away I go. The car idles fine. But, I can get it to stumble out of gear by just revving it. This happens when the car is fully warmed up. The best way I can describe it is like an old carbuerater that needs overhauling. But I have OEM EFI. I was chasing a problem when I first got it (wouldn't pass emissions), and have replaced the MAF sensor, CTS, Fuel pressure regulator, and O2 sensor. As I mentioned, the computer is giving me no codes. Anyone have any ideas what to look for? Thanks.