Hey whatsup guys I recently picked up a 93 automatic T4R off my buddy, its got quite a few problems.
To start, it will religiously not rev past 4,000rpm but usually it wont pass 3,500rpm, and if I hold the throttle there it starts to sound similar to hitting the rev limiter, the valves were adjusted 10,000mi ago but I can easily hear them, also it sounds like the timing belt is loose/ rubbing, would this indicate its going out?
Right now it is throwing code 25, what process do you guys recommend to fix this, also Is there a code for a clogged catalytic converter?
*****UPDATE **The auto trans is actually pulled from an old Tacoma or toyota pickup, is the model number easily visible, and what else will this complicate??******* trans will shift into reverse, 1st->2nd gear, and into 4wd but nothing more, I remember being told this is likely a shifter solenoid issue.
Also the factory EGR vacuum modulator melted and I replaced it with a new one which then melted again. I have been informed that this is likely a failed/clogged catalytic converter or the egr valve is broken, the exhaust smells like it maybe will pass smog. I did replace all the vacuum hoses but noticed no changes.
Im trying to keep this build as low cost as possible since I bought the truck for $200
Any help is appreciated!!
To start, it will religiously not rev past 4,000rpm but usually it wont pass 3,500rpm, and if I hold the throttle there it starts to sound similar to hitting the rev limiter, the valves were adjusted 10,000mi ago but I can easily hear them, also it sounds like the timing belt is loose/ rubbing, would this indicate its going out?
Right now it is throwing code 25, what process do you guys recommend to fix this, also Is there a code for a clogged catalytic converter?
*****UPDATE **The auto trans is actually pulled from an old Tacoma or toyota pickup, is the model number easily visible, and what else will this complicate??******* trans will shift into reverse, 1st->2nd gear, and into 4wd but nothing more, I remember being told this is likely a shifter solenoid issue.
Also the factory EGR vacuum modulator melted and I replaced it with a new one which then melted again. I have been informed that this is likely a failed/clogged catalytic converter or the egr valve is broken, the exhaust smells like it maybe will pass smog. I did replace all the vacuum hoses but noticed no changes.
Im trying to keep this build as low cost as possible since I bought the truck for $200
Any help is appreciated!!
Last edited:
