car doesnt go over 80mph and when running doesnt rev more than 3000rpm what could it be i unplugged the boost sensor and doesnt do anything and the brown plug on the throttle position sensor and nothing. what do you guys think it could be please let me know

 

dosent rev over 3k rpm's possibly tranny problems

 

Im like 90% sure you may need a new maf.

 

when its on neutral it only revs up to 5000rpm

 

the car is a complete cow a toyota tercel smokes it

 

I thought a bad MAF limited to 2000 RPM?

You should check for codes too. Maybe you'll get lucky and your car already knows what's wrong. http://vbxmaxima.8m.com/ecu.html

 

Does the car jerk? mayb your coil pack is going out

 

MAF sensor problem, if not, tranny big timer!!! bring it to mechanics.

 

the jerks alot

 

Coil pack 99% dont drive car for long check for codes my freind had it car was jerking liek crazy couldint even drive checked codes said cylinder 5 misfire needed to get a new ignition coil $80

 

no error codes came up when connecting to computer then we disconnected the IAT sensor and the computer read that so we know its working

 

I wouldint do it that way but if that read correct then im out of ideas..

 

its definitely your coil packs.
they have gone bad playa
you are gonna have to change them very soon, else, the car will not start when the problem becomes major.

 

could it be a vaccum leak or clogged up cat

 

anyone can help me