1988 Toyota Supra turbo engine cuts out when turbo is maxed out and between 3 and 4 thou RPM's?

Question

Hello I have a 88 supra turbo and i'm not sure what is wrong it seems like when the turbo kicks in the engine starts running badly almost like it is missing and when in 3rd gear and above when you go over 3000 rpm's when it is floored it will cut out then after 4000 rpm's it will be fine again also my gas milage is really bad too i get approx 8 miles to the gallon it seems to be running rich cause it smokes a lil bit of black smoke anyways if anyone knows what the prob is i would appricate it cause if not i'm gonna sell it cause the gas milage is killin me ... thank you Mike

please contact me at [e-mail] thank you

Answer 1

Hello, Mike. Don't listen to anyone here, as they don't know anything about the 7m-gte motor and or the ct26 turbo. I've owned SEVERAL 7m-gte cars, and currently own three of them.
You or the previous owner have turned up the boost, and you're hitting Fuel Cut Off . Since you don't seem to know your car all that well, my advice is to have a Supra person turn down the boost, and verify that all other supporting modifications are in place, before turning the boost up again. You're also running super rich, which accounts for the extremely low gas mileage. Don't continue driving it in this condition, as you're on your way to ruining your engine.
Feel free to email me, if this site allows you to contact me. Or post your contact info, if you'd like.

Answer 2

It sounds like an ignition problem to me. If the coil is weak it will cause the spark plugs not to fire under hard acceleration. Also the computer adjusts the fuel mixture based on how much oxygen is left in the exhaust a miss fire or weak ignition will leave oxygen in the exhaust that should have been burned up and the computer will try to compensate by adding more gas. This problem should be fixed immediately because the excess gas will damage the catalytic converter.

Answer 3

sure, and you need to purchase a 2jz engine from japan for a competent fee, and basically pop it in there you may want extra effective than the engine, however the earnings of supras is non rapid or rapid or twin rapid, the engine bay does not substitute so all you're able to do is mount each and every little thing like it replaced into fixed from the production facility, yet its in comparison to you may completely customize each and every little thing to make it extra wholesome. because of the fact it replaced into already geared up to extra wholesome everything you like.

Answer 4

could be time for a new turbo. also check your injectors, spark plugs, fuel pressure regulator, fuel pump and filter. with my mr2 turbo, there was a fuel cut in 3rd if you romped on the gas pedal too hard! first time i experienced that it really freaked me out. it was like hitting a brick wall, but then about 10-15 seconds later everything was fine. try checking out suprastore.com in case you need to replace anything.

Answer 5

a good supra will be a 1994-1995 do it up like myn on my pic sic colour and all

Answer 6

check the turbo timing
if you intercooler isnt working properly you have more gas than air going into the engine.

Answer 7

replace the fuel pressure regulator. I had to help since ive experience that too even though I dont like imports to much. Replace the fuel filter too since your in that area

Answer 8

sounds like you already destroyed the Eng.

Answer 9

hi!

Answer 10

Hey!!!!!!!!!..., My name is Michael too!