Techincall questions.. im a supra NOOb

f00g00 · 10-23-2006, 11:14 AM

I had a medium pitch humming whine from under my car that I thought was a U joint or rear end. I disconnected the driveline at the rear end to isolate them and it turned out to be the rear end. It had a catch in it when turning.
The oil was not low in it either so it failed and I ended up getting a used one from a junk yard and my 0-60 time went down cause the ratio is higher than the old one. It is a LSD though.

Isphius · 10-23-2006, 01:24 PM

Yup, Best deal is a 4.3 LSD from an n/a wit hsport package. kills ure gas mileage though.

Boostesi · 10-23-2006, 09:16 PM

today at work i changed my rear differential fluid just for the hell of it, damn when i pulled that plug it had so many metal shavings on it i didnt know what to do with myself. i cleaned the plug off and flushed maybe 5 quarts of GL-5 80w90 through it to clean it up, then filled it. the grinding quieted down but is still there, its more of a hum almost sounds like grinding rotors.. my diff is probably on its way out. do you think that the speedo cable broke? or the sending unit. also i noticed the rear end clunks when you put it into gear (its an auto) how do you run a diagnostic on the tranny?

Boostesi · 10-23-2006, 09:17 PM

also, everytime i put my key to the on position my horn goes off non stop, so i have to turn the key to ACC then back to on for it to stop.. any way to fix that?

Ripvanwinkle · 10-23-2006, 09:30 PM

9 times out of 10 it is the speedo cable rather than the sending unit.

Here is a link to a page that shows how to get diagnostics for the trans.
http://www.cygnusx1.net/Supra/TechTi...ror_codes.aspx

Here is a link to a wright up on replacing the speedo cable.
http://supras.com/06/techcenter/display.php?QID=29

I've got no clue about the horn problem though.

brandonsupra · 10-23-2006, 10:05 PM

Good luck trying to fix an auto tranny yourself unless you're a mechanic. It sounds like you need a diagnostic/full check up done. For the tranny inspection just head down to a local tranny shop and ask them to run a diagnostic on it. They will remove the pan and check everything. I had mine checked and found out mine needed a rebuild. My jaw hit the floor when he told me how much a rebuild would cost. It's just the same price to get a brand new one installed. Around $3000 CDN I was quoted. I'm still driving mine, it revs high and shifts hard when cold...but it doesn't grind or anything strange like that. Yours sounds serious whatever it is.

Boostesi · 10-23-2006, 10:27 PM

the error is Defective No1 speed sensor (in combination meter)-severed wire harness or short circuit. code 42.... i just checked it outside. i guess thats not a big deal and as far as the hummmmm goes, thats probably my differential.. tranny seems to shift ok, i heardyou can experience irratic shifting when not having a speedo cable... i really want to figure out the horn thing though.. thats driving me nuts. and i guess ill just have to get a new LSD. anyone know of a company that makes one for our cars besides OBX.. ill check up on a KAAz right now.. they might

but if anyone knows anything on the horn situation let me know

10-23-2006, 01:24 PM	#2
Isphius 500whp yet? Join Date: Nov 2005 Location: Long branch, NJ Posts: 1,006	Yup, Best deal is a 4.3 LSD from an n/a wit hsport package. kills ure gas mileage though. __________________ Yay the supra assistant is gone!!! WEEE!!

10-23-2006, 09:16 PM	#3
Boostesi Stock Join Date: Oct 2006 Location: Rhode Island Posts: 21	today at work i changed my rear differential fluid just for the hell of it, damn when i pulled that plug it had so many metal shavings on it i didnt know what to do with myself. i cleaned the plug off and flushed maybe 5 quarts of GL-5 80w90 through it to clean it up, then filled it. the grinding quieted down but is still there, its more of a hum almost sounds like grinding rotors.. my diff is probably on its way out. do you think that the speedo cable broke? or the sending unit. also i noticed the rear end clunks when you put it into gear (its an auto) how do you run a diagnostic on the tranny? __________________ pacesetter cat back

10-23-2006, 09:17 PM	#4
Boostesi Stock Join Date: Oct 2006 Location: Rhode Island Posts: 21	also, everytime i put my key to the on position my horn goes off non stop, so i have to turn the key to ACC then back to on for it to stop.. any way to fix that? __________________ pacesetter cat back

10-23-2006, 09:30 PM	#5
Ripvanwinkle Stock Join Date: Oct 2006 Location: NM Posts: 1	9 times out of 10 it is the speedo cable rather than the sending unit. Here is a link to a page that shows how to get diagnostics for the trans. http://www.cygnusx1.net/Supra/TechTi...ror_codes.aspx Here is a link to a wright up on replacing the speedo cable. http://supras.com/06/techcenter/display.php?QID=29 I've got no clue about the horn problem though. Last edited by Ripvanwinkle; 10-23-2006 at 09:32 PM.

10-23-2006, 10:27 PM	#7
Boostesi Stock Join Date: Oct 2006 Location: Rhode Island Posts: 21	the error is Defective No1 speed sensor (in combination meter)-severed wire harness or short circuit. code 42.... i just checked it outside. i guess thats not a big deal and as far as the hummmmm goes, thats probably my differential.. tranny seems to shift ok, i heardyou can experience irratic shifting when not having a speedo cable... i really want to figure out the horn thing though.. thats driving me nuts. and i guess ill just have to get a new LSD. anyone know of a company that makes one for our cars besides OBX.. ill check up on a KAAz right now.. they might but if anyone knows anything on the horn situation let me know __________________ pacesetter cat back

10-23-2006, 11:14 AM	#1
f00g00 12psi boost Join Date: Aug 2005 Location: Kuwait Posts: 292	I had a medium pitch humming whine from under my car that I thought was a U joint or rear end. I disconnected the driveline at the rear end to isolate them and it turned out to be the rear end. It had a catch in it when turning. The oil was not low in it either so it failed and I ended up getting a used one from a junk yard and my 0-60 time went down cause the ratio is higher than the old one. It is a LSD though.

10-23-2006, 10:05 PM	#6
brandonsupra Stock Join Date: Aug 2006 Location: BC Canada Posts: 26	Good luck trying to fix an auto tranny yourself unless you're a mechanic. It sounds like you need a diagnostic/full check up done. For the tranny inspection just head down to a local tranny shop and ask them to run a diagnostic on it. They will remove the pan and check everything. I had mine checked and found out mine needed a rebuild. My jaw hit the floor when he told me how much a rebuild would cost. It's just the same price to get a brand new one installed. Around $3000 CDN I was quoted. I'm still driving mine, it revs high and shifts hard when cold...but it doesn't grind or anything strange like that. Yours sounds serious whatever it is.

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