luvinmycel
New member
I have a 1987 Celica convertible with a JDM 92 MR2 3SGTE in it. Okay, basically as soon as the car hits "0" on the boost gauge it starts bucking and jumping and whenever you do more than a light acceleration on the gas it feels like it just stops. However, if you can patiently get over about 2 psi in 5th gear it finally levels out, otherwise it keeps bucking and jumping. We've tried the fuel cut mod that plugs the map sensor and the vacuum line, it's still doing the same thing. We've checked voltages on the map sensor, ecu and the AFM and everything appears fine. The TVIS appears to be working correctly also. Unfortunately we are comletely dumb founded. It's been doing this for almost 2 years now and it's so annoying that I really don't like to drive it very far anymore. We've done everything we can think of. If anyone has any ideas, please post.
We decided to swap out my stock 3SFE fuel pump for the Walbro fuel pump to see if that would help at all. Dad said that it made the problem a little bit better. It didn't eliminate it though. We are now trying to hook up a secondary oxygen sensor since mine didn't have one on it. Any one have any other ideas???
Any advice is well welcomed.
Thanks
T
We decided to swap out my stock 3SFE fuel pump for the Walbro fuel pump to see if that would help at all. Dad said that it made the problem a little bit better. It didn't eliminate it though. We are now trying to hook up a secondary oxygen sensor since mine didn't have one on it. Any one have any other ideas???
Any advice is well welcomed.
Thanks
T