Hey Guys! I Need A Master Toy Tech! Bad!

[Kris]

Hello to all! I used to be a Jeep Chic, BUT I have cum over to the Toyota side! I am VERY capable of holding my own, both in life, and with a wrench. I AM A TOYOTA VIRGIN! My new bad-girl is a Black, 1997 Toyoda T100 5spd 4x4 SR5 X-Cab with 220k, but It has a 40k engine/tranny/transfer case that came from Japan, a brand new diff, 6" Rough Country lift and 18" Moto Metal wheels with 35's. It runs so AWESOME....BUT HERE IS WHERE I NEED A BAD-ASS TECH TO HELP ME.. It is obvious that the truck has been off-road a number of times. Like, When I got it, all the front lights were exploded. NOW here's where it gets tricky. For some reason the battery will NOT charge. Easy right? Nothing is easy for THIS girl!! I have replaced the alternator with a brand new one... TWICE (Had the second new one tested off the truck and it is good) I then replaced the battery leads and cleaned the spots where they ground with a wire brush. When I test at the alternator, my meter will read 11.9v to 12.2v and falling, the same as the dying battery. I have a suspicion that it could be the PCM because the truck also "clicks" a few times on startup as if the starter is going bad, and idles at 2000 RPM. Also when driven for awhile and I cum ;-) to a stop, the idle will start to bounce but then settle in at 2000 again. (Vacuum leak? Read on...) Im not sure if its related, but also the temp guage and oil pressure guages are both INOP. Also the blower motor for heat/AC and the all the lights behind the controls are INOP. The main dash lights, battery gauge and all other gauges work. When I got the truck all the front lights were blown and broken (got swamped?) I noticed the PCM/ECU is in the passenger kick panel and can easily get wet. Before I buy one can anyone confirm that I'm on the right track, or tell me something else to check first? I am also having a REALLY hard time finding a ECM. The computer thats in it is a 5VZ 4x4 MT and says 89661-34290 & 175000-9071 12v on it.... IM PULLING MY HAIR OUT!! MASTER TOYOTA TECH'S PLEASE HAVE MERCY ON ME!!!! I NEED YOU BAD!

 

[toyotafan]

Welcome to the site, Answering on the other thread in the T100 forum.

 

[MuddyTacoma]

Hey there, welcome to the club. Where from?

 

[Kris]

Hey there, welcome to the club. Where from?

Thanks. Im from Mexico. Live in Fl now...

 

[tbplus10]

That sounds a lot like a PCM that's gotten swamped.
Have you checked it for codes?
Or what might be more obvious is information that should be accessible but not showing on the scanner?
Unfortunately some of your light/power/blower issues aren't controlled by the ECU-PCM and while they may have their problematic roots in an unscheduled dunking replacing this part won't repair them it just gives a clue what happened.
The 5VZE Computer, which actually traces itself back to a 3.4 v6 eng can also be found in like optioned Tacoma trucks from 1996 to 2003.
It still won't be easy to find though since most of these trucks get picked clean as soon as they hit the yards.
Best bet is look for a privately owned wreck being parted out.

 

[Kris]

That sounds a lot like a PCM that's gotten swamped.
Have you checked it for codes?
Or what might be more obvious is information that should be accessible but not showing on the scanner?
Unfortunately some of your light/power/blower issues aren't controlled by the ECU-PCM and while they may have their problematic roots in an unscheduled dunking replacing this part won't repair them it just gives a clue what happened.
The 5VZE Computer, which actually traces itself back to a 3.4 v6 eng can also be found in like optioned Tacoma trucks from 1996 to 2003.
It still won't be easy to find though since most of these trucks get picked clean as soon as they hit the yards.
Best bet is look for a privately owned wreck being parted out.

Thanks for your help. Turned out to be a melted harness about 6" back from the alternator. The exciter wire and switched ign wire were crossed. Im back charging!

 

[toyotafan]

Good news.