temp guage doesnt really move

Myron · 09-05-2009, 09:59 AM

so my temp guage doesnt really show and reading. Ive had this truck for 5 years now and it seemed like it worked so i left it alone..i was gone for over a year and now i want to check it out..the wife was driving it and from what she said it might of over heated. How do i check to see if the temp guage is working.
I thought about using a voltage meter and check that way...but where do i start..in the console its self or in the fuse box?

Thanks

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4Crawler · 09-05-2009, 10:12 AM

The Factory Service Manual has a test procedure in the "Body Electrical" (BE) section.

Myron · 09-05-2009, 10:27 AM

i will search the forum for the service manual..but anyone has a link to it for faster refrence?

thanks

4Crawler · 09-05-2009, 10:35 AM

Here is one:
- http://www.4x4wire.com/forums/showfl...Number=1065861

Myron · 09-05-2009, 02:25 PM

thanks

Myron · 11-04-2009, 09:40 PM

My Check engine light came on today, Got 4 flashers..i checked the code online and said something about the ECT. Coolant Temp. Where do i start to solve this problem.
My temp gauge still doesn't move like a regular temp gauge. I drove for 35 miles and the temp gauge said it was still cold. Thnx in advance fellas

camo31"10.50" · 11-04-2009, 09:42 PM

uhhmm..firsstt off..determine whether it is your gauge..or your temperature sensor..lol then report back hahaha

yota4runna · 11-04-2009, 11:31 PM

To test your dash temp gauge, pull the wire off your temp sender and ground it. Turn the key on, and the gauge should go all the way over to "hot."

If the gauge is OK, then your engine is running too cold. Probable cause is a stuck open thermostat.

boxer.fan · 11-06-2009, 04:27 PM

OK, I was about to post the same question but did the search first and found this. If the gauge is good with grounding the wire and it went to HOT could it be the sending unit? Checking the unit would be a check with ohm meter for resistance? My Cat is bad and tailpipe is black with rich smell so this could fix it. Thanks.

4Crawler · 11-06-2009, 04:29 PM

Yep, sender is a variable resistance device. I think the FSM lists some resistance vs. temperature values.

Myron · 11-07-2009, 10:36 AM

Okay so i grounded the Temp Sensor and the gauge did not move at all, when it is not grounded it moves like 3mm

yota4runna · 11-07-2009, 11:07 AM

Quote:

Originally Posted by Myron

Okay so i grounded the Temp Sensor and the gauge did not move at all, when it is not grounded it moves like 3mm

You pull the wire off the temp. sender, and ground the WIRE, not the sender. Then, turn the ignition key to "on" and watch the gauge. If the gauge is OK, it'll go over to "hot."

If the gauge checks out, then the sender that you pulled the wire off is bad, or the thermostat is likely stuck open.

Since you're getting a code for coolant temperature, the most likely problem is the thermostat.

Myron · 11-07-2009, 11:24 AM

I pulled the wire off, Grounded that Wire, turned the ign on and the gauge does not move at all, I did this while the truck was hot.

09-05-2009, 10:12 AM	#2 (permalink)
4Crawler Contributing Member Join Date: Jun 2002 Location: SF Bay Area, CA Posts: 7,836	The Factory Service Manual has a test procedure in the "Body Electrical" (BE) section. __________________ 1985 Toyota 4Runner SR-5, 22REC engine, dual t-cases, 4.88 gears, dual ARBs, 33x10.50 BFGs or 35x12.50 MTRs r.c.brown@ieee.org TruckEditor@tlca.org Project: 4Crawler 4Crawler OffRoad Gettin'Off 4WD Club

09-05-2009, 10:27 AM	#3 (permalink)
Myron Registered User Join Date: Sep 2006 Location: Scottsdale,Arizona Posts: 191	i will search the forum for the service manual..but anyone has a link to it for faster refrence? thanks __________________ 1987 Pick Up 2.4L 4x4 2004 Rallirt 2008 Taco

09-05-2009, 10:35 AM	#4 (permalink)
4Crawler Contributing Member Join Date: Jun 2002 Location: SF Bay Area, CA Posts: 7,836	Here is one: - http://www.4x4wire.com/forums/showfl...Number=1065861 __________________ 1985 Toyota 4Runner SR-5, 22REC engine, dual t-cases, 4.88 gears, dual ARBs, 33x10.50 BFGs or 35x12.50 MTRs r.c.brown@ieee.org TruckEditor@tlca.org Project: 4Crawler 4Crawler OffRoad Gettin'Off 4WD Club

09-05-2009, 02:25 PM	#5 (permalink)
Myron Registered User Join Date: Sep 2006 Location: Scottsdale,Arizona Posts: 191	thanks __________________ 1987 Pick Up 2.4L 4x4 2004 Rallirt 2008 Taco

11-04-2009, 09:40 PM	#6 (permalink)
Myron Registered User Join Date: Sep 2006 Location: Scottsdale,Arizona Posts: 191	My Check engine light came on today, Got 4 flashers..i checked the code online and said something about the ECT. Coolant Temp. Where do i start to solve this problem. My temp gauge still doesn't move like a regular temp gauge. I drove for 35 miles and the temp gauge said it was still cold. Thnx in advance fellas __________________ 1987 Pick Up 2.4L 4x4 2004 Rallirt 2008 Taco

11-04-2009, 09:42 PM	#7 (permalink)
camo31"10.50" Registered User Join Date: Aug 2007 Location: Vian, OK Posts: 2,095	uhhmm..firsstt off..determine whether it is your gauge..or your temperature sensor..lol then report back hahaha __________________ FOR SALE 1986 Ext. Cab 4x4, rebuilt 22R, 5spd, 31x10.50 X-Terrains FOR SALE 1992 SR5 FO RUNNA V6, 5 speed, 4in. trail-master lift, 33x12.50 BFG muds, 4.56 gears!!! and an IMMACULATE interior..yes..you should be jealous "Its still a toyota man.. Dont deprive it of its capabilities.." "If you can read english, Thank a teacher...If you can speak it, Thank a soldier!!" Kelli Ruark-2009

11-04-2009, 11:31 PM	#8 (permalink)
yota4runna Registered User Join Date: Oct 2007 Location: Southern Ore. Posts: 331	To test your dash temp gauge, pull the wire off your temp sender and ground it. Turn the key on, and the gauge should go all the way over to "hot." If the gauge is OK, then your engine is running too cold. Probable cause is a stuck open thermostat.

11-06-2009, 04:27 PM	#9 (permalink)
boxer.fan Registered User Join Date: Oct 2008 Location: Covina, CA Posts: 16	OK, I was about to post the same question but did the search first and found this. If the gauge is good with grounding the wire and it went to HOT could it be the sending unit? Checking the unit would be a check with ohm meter for resistance? My Cat is bad and tailpipe is black with rich smell so this could fix it. Thanks.

11-06-2009, 04:29 PM	#10 (permalink)
4Crawler Contributing Member Join Date: Jun 2002 Location: SF Bay Area, CA Posts: 7,836	Yep, sender is a variable resistance device. I think the FSM lists some resistance vs. temperature values. __________________ 1985 Toyota 4Runner SR-5, 22REC engine, dual t-cases, 4.88 gears, dual ARBs, 33x10.50 BFGs or 35x12.50 MTRs r.c.brown@ieee.org TruckEditor@tlca.org Project: 4Crawler 4Crawler OffRoad Gettin'Off 4WD Club

11-07-2009, 10:36 AM	#11 (permalink)
Myron Registered User Join Date: Sep 2006 Location: Scottsdale,Arizona Posts: 191	Okay so i grounded the Temp Sensor and the gauge did not move at all, when it is not grounded it moves like 3mm __________________ 1987 Pick Up 2.4L 4x4 2004 Rallirt 2008 Taco

11-07-2009, 11:24 AM	#13 (permalink)
Myron Registered User Join Date: Sep 2006 Location: Scottsdale,Arizona Posts: 191	I pulled the wire off, Grounded that Wire, turned the ign on and the gauge does not move at all, I did this while the truck was hot. __________________ 1987 Pick Up 2.4L 4x4 2004 Rallirt 2008 Taco

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