Won't rev past 2500 rpm

Supra87T

Supra87T

2-Tone BLUE
Feb 23, 2006
135
0
0
Cincinnati, OH
I just finished putting a JDM 7MGTE into my 87 supra. I've added a Walbro 255 and 3in downpipe to it while I was at it.

The problem is when I'm driving the car seems to stop at 2500 rpm and jerks and won't accelerate anymore. If I let up on the gas a little it will continue to accelerate a little more. I've checked for boost leaks, replaced the bov, and tried a different afm. I also replaced all the stock hose clamps with t-bolt style ones. Does this problem seem like a boost leak or something else? Also, the turbo is very loud; it sounds almost like a semis.

Thanks for any help.
 
Supra87T

Supra87T

2-Tone BLUE
Feb 23, 2006
135
0
0
Cincinnati, OH
mkiiSupraMan18 said:
sounds like a fuel pump to me...

"Also, the turbo is very loud; it sounds almost like a semis." Better description?
Click to expand...

I replaced the fuel pump with the Walbro thinking that was the problem. Maybe FPR? It also does this in all gears around 2500 btw.

The turbo you can just hear it spool while it's idling. You can also just hear it while it's driving. I don't know if that's normal on a MKIII as I've never driven or rode in another turbo supra, but all of the other turbo cars I've been in it seems like the turbo doesn't sound as loud.
 
D

Doward

Banned
Jan 11, 2006
4,245
0
36
Alachua, FL
Check your turbo for shaft play... grab it, and see if it wiggles more than a HAIR... had a similar problem before, too, without the turbo sound (it was an n/a) - turned out we forgot to hook up the TPS.
 
Supra87T

Supra87T

2-Tone BLUE
Feb 23, 2006
135
0
0
Cincinnati, OH
Doward said:
Check your turbo for shaft play... grab it, and see if it wiggles more than a HAIR... had a similar problem before, too, without the turbo sound (it was an n/a) - turned out we forgot to hook up the TPS.
Click to expand...

I checked the TPS last night. Everything appears to be within spec on that.
 
You must log in or register to reply here.
Top Bottom