Help! Supra doesn't run right

Abe's 1987

Member
Sep 5, 2017
258
10
18
Houston,TX
A suggestion: where your new speedo cable threads onto the transmission, take it back off and antisieze the crap out of it. Do the same where the two pieces meet. Future you will appreciate that.
I was actually think of doing that but didn't have any issues getting it off. I may do that as I got to get under the car to change the slave cylinder.
 

Abe's 1987

Member
Sep 5, 2017
258
10
18
Houston,TX
Swapped out the clutch master cylinder and slave cylinder yesterday. Everything works good now. Unfortunately I was not able to take photos as it was too hot to be changing the parts and taking photos.
 
Last edited:

Abe's 1987

Member
Sep 5, 2017
258
10
18
Houston,TX
Got me a new motorcycle to play with. This is my first motorcycle, new to riding. It is a 2018 KTM RC 390

1000008286.jpg

Did install a new 3 inch downpipe from driftmotion along with my old exhaust from the 7m into the 1jz supra. Will get a couple pics of that soon. Will hopefully get new targa gasket and truck gasket to stop these leaks so I can leave this out in the rain with no worries.

Fun story, I went to take 5 for an state inspection for the supra. Man were the two gentleman there sooo excited to see my supra. They knew all about the mk3's and 1jz swaps. They even FaceTime a few friends and managers at other take 5 locations to show my beauty.
 
  • Like
Reactions: trofimovich

Bru

Member
Feb 28, 2013
90
42
18
Tampa Bay Area
I see you have the rare super monitor in place of a standard clock. About one in 10 cars had this option before it was discontinued after 88. The option cost was $250. I found one on eBay and retrofitted my 1987, since the plugs for the harness were there by default. I usually leave it on MPG. It's really sensitive after you reset it. I do that on the interstate to see what my maximum fuel economy could be. Something like 24 to 26.
 

Abe's 1987

Member
Sep 5, 2017
258
10
18
Houston,TX
I see you have the rare super monitor in place of a standard clock. About one in 10 cars had this option before it was discontinued after 88. The option cost was $250. I found one on eBay and retrofitted my 1987, since the plugs for the harness were there by default. I usually leave it on MPG. It's really sensitive after you reset it. I do that on the interstate to see what my maximum fuel economy could be. Something like 24 to 26.
Yeah but after I swapped in the 1jz, no power is getting to the super monitor. Will have to back track to see where I need to tie this to a power source. I think I already know but haven't had time to dig in to it.
 
  • Like
Reactions: Bru

Abe's 1987

Member
Sep 5, 2017
258
10
18
Houston,TX
This is for them computer tech guys. I figured i would look into why my horn was not working and why the previous owner bypassed with a autozone switch for the horn. Diagnosed to the multifunction headlight, turn signal, windshield switch and noticed this break in the horn board circuit. Is this a simple solder repair or does this require a more precise repair technique? Should I attempt this repair or take it to a computer shop? I'd rather fix this then to spend $300 on another one. Connection between all other points are good until right here.

1000016870.jpg


1000016869.jpg
 

Bru

Member
Feb 28, 2013
90
42
18
Tampa Bay Area
This is for them computer tech guys. I figured i would look into why my horn was not working and why the previous owner bypassed with a autozone switch for the horn. Diagnosed to the multifunction headlight, turn signal, windshield switch and noticed this break in the horn board circuit. Is this a simple solder repair or does this require a more precise repair technique? Should I attempt this repair or take it to a computer shop? I'd rather fix this then to spend $300 on another one. Connection between all other points are good until right here.

View attachment 82005


View attachment 82006
You have to wonder why this happened in the first place. Is it a rubbing contact? I would just carefully solder it after cleaning it with a brush or razor blade. Don't apply too much heat, or it could melt.
 

Abe's 1987

Member
Sep 5, 2017
258
10
18
Houston,TX
You have to wonder why this happened in the first place. Is it a rubbing contact? I would just carefully solder it after cleaning it with a brush or razor blade. Don't apply too much heat, or it could melt.
Not a rubbing point or does not come in contact with any other parts. Reading the continuity and voltage going to the horn all seems ok. Wonder if this was a bad part from another supra dropped in here. Will probably take this to a computer repair shop to see if they can fix it as they should have all needed materials to fix properly.
 

Abe's 1987

Member
Sep 5, 2017
258
10
18
Houston,TX
You can pick up a soldering kit at Harbor Freight.
I do have a soldering kit but wanted to have a new trace put in as well as new solder mask to protect from corrosion. Plus my hands are not as steady as they use to be.

I did find a computer repair shop near me and one look the tech said yeah man that is a easy fix. He said he would have it done by tomorrow and only is charging $20. We will see the quality of work when I pick it up. This place has a ton of good reviews. The tech says he has repaired car parts including ecu, relays, ect.