my gauges r screwed!!

blitzmkiii · 10-07-2005, 03:37 PM

Hey wats up i have had aftermarket gauge cluster pretty much ever since i have had the car ( about a year) and a little while back all my gauges went crazy! They are all screwed up the speedo dont work, the gas gauge will only go to half a tank, the boost gauge is on -6 till i redline then it shoots up to 6, temp always on hot, oil pressure is messed up, but the tach works perfect anyways my ques is me and a friend took the cluster out and checked it out the wiring looks fine we think the needles went bad if so can i replace the needles or do i have to get a new cluster and how would i know for sure if it is the needles????

SupraMan1784 · 10-07-2005, 04:25 PM

i dont think its the needles...though i may be wrong...imma still go wit the assumption that its electrical...even though u say the wiring is wrong..did u check the connections? make sure everything is tight and there are no frayed wires...which i assume there are none since u checked the wiring..make sure all the connections are tight

blitzmkiii · 10-07-2005, 04:39 PM

thanx man im goin to check again im just trying to get everything perfect im puttin a new 7m in my car in bout to weeks and im buyin alot of extras lol just tryin to get everything done right been savin for a few months

joel w · 10-07-2005, 05:07 PM

check the ground cables. battery to block, block to chassis chassis to exhaust, there is lots of electronics that need a good grouind. just a thought

supra_91 · 10-08-2005, 05:51 PM

theres no way it's the needles

joel w · 10-08-2005, 11:44 PM

i would focus on one problem at a time, first the fuel gauge, take the sending unit out of the tank from the top inside the car under the rear carpet toyo was smart and put in an access door for us. 3 screwes on the cover and 3 or 6, 10 mil bolts for the sending unit. pull it out carefully and manually move it full range while someone watches the gauges with the key on. mine had varnish built up on the reistate wireing wrap that the float arm rubs against. once i carefully scrapped the varnish off, the arm made contact with metal again. 2 years now and it still works fine. make sure the float is still sealed with air and (floats) and not half full of fuel. see if that fixes one issue? and go from there...

godmachine · 04-05-2007, 11:54 PM

Quote:

Originally Posted by blitzmkiii

the speedo dont work, the gas gauge will only go to half a tank, ......, temp always on hot, oil pressure is messed up, but the tach works perfect

i just bought an 87 turbo with aftermarket gauges, and it has almost exactly the same problem!! i'll try these suggestions to fix it, but i wanted to ask, did you ever end up solving this? if so, did you pinpoint the exact problem?

thanks!

supramacist · 04-07-2007, 06:31 AM

New gauges is the fix.

10-07-2005, 03:37 PM	#1
blitzmkiii 3" Exhaust Join Date: Oct 2005 Location: Texas Posts: 61	my gauges r screwed!! Hey wats up i have had aftermarket gauge cluster pretty much ever since i have had the car ( about a year) and a little while back all my gauges went crazy! They are all screwed up the speedo dont work, the gas gauge will only go to half a tank, the boost gauge is on -6 till i redline then it shoots up to 6, temp always on hot, oil pressure is messed up, but the tach works perfect anyways my ques is me and a friend took the cluster out and checked it out the wiring looks fine we think the needles went bad if so can i replace the needles or do i have to get a new cluster and how would i know for sure if it is the needles???? __________________ 1987 5-speed Turbo, JDM 7M-GTE, K&N air filter, 3' straight exhaust, Blitz BOV, Upgraded CT26 Turbo, 3' Down Pipe, NGK Iridium Spark Plugs And Wires, Megan Racing Strut Bar

10-07-2005, 04:25 PM	#2
SupraMan1784 SP58GT Join Date: Jun 2005 Location: Dirty Jerz Posts: 691	i dont think its the needles...though i may be wrong...imma still go wit the assumption that its electrical...even though u say the wiring is wrong..did u check the connections? make sure everything is tight and there are no frayed wires...which i assume there are none since u checked the wiring..make sure all the connections are tight __________________ Now: Saving for an MKIV Broken Rides: (Sold) 91 supra turbo 5speed with a 1jzgte motor 421whp 400(399) ft*lbs of torque on tap @ 15 psi "Always outnumbered, never outgunned."

10-07-2005, 04:39 PM	#3
blitzmkiii 3" Exhaust Join Date: Oct 2005 Location: Texas Posts: 61	thanx man im goin to check again im just trying to get everything perfect im puttin a new 7m in my car in bout to weeks and im buyin alot of extras lol just tryin to get everything done right been savin for a few months __________________ 1987 5-speed Turbo, JDM 7M-GTE, K&N air filter, 3' straight exhaust, Blitz BOV, Upgraded CT26 Turbo, 3' Down Pipe, NGK Iridium Spark Plugs And Wires, Megan Racing Strut Bar

10-08-2005, 05:51 PM	#5
supra_91 Lexus & 550's Join Date: Sep 2005 Location: Illinois Posts: 521	theres no way it's the needles __________________ 91 N/A automatic supra;K&N FIPK;2.5" custom exhaust;no cat;pacesetter header;eibach springs;tokico "blues";MKIV TT rims

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10-07-2005, 05:07 PM	#4
joel w Lexus & 550's Join Date: Aug 2005 Location: In the shadows Posts: 506	check the ground cables. battery to block, block to chassis chassis to exhaust, there is lots of electronics that need a good grouind. just a thought

10-08-2005, 11:44 PM	#6
joel w Lexus & 550's Join Date: Aug 2005 Location: In the shadows Posts: 506	i would focus on one problem at a time, first the fuel gauge, take the sending unit out of the tank from the top inside the car under the rear carpet toyo was smart and put in an access door for us. 3 screwes on the cover and 3 or 6, 10 mil bolts for the sending unit. pull it out carefully and manually move it full range while someone watches the gauges with the key on. mine had varnish built up on the reistate wireing wrap that the float arm rubs against. once i carefully scrapped the varnish off, the arm made contact with metal again. 2 years now and it still works fine. make sure the float is still sealed with air and (floats) and not half full of fuel. see if that fixes one issue? and go from there...

04-07-2007, 06:31 AM	#8
supramacist 1000whp postwhore Join Date: Apr 2007 Location: Escape from the Prison Planet Posts: 1,356	New gauges is the fix.