temperature gauge doen't work.

nelson1969 · 01-12-2007, 08:48 PM

I have a pick up 1994 2w. that the temperature gauge is not working I'll appreicate any info. why is not working. thank you.

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all_terrain17 · 01-12-2007, 08:56 PM

EDIT: Useless post

timebandit · 01-12-2007, 09:04 PM

The sensor for the temp gauge has one wire. It it way down the middle of the intake between the middle cylinders. It can be seen from the top.

dcg9381 · 01-12-2007, 09:04 PM

That's the temp sender for the ECU.. I could be wrong here, as I know the earlier EFI system better.. On the pre 88.5 systems, the temp sensor for the gauge is in the lower plenum, middle of the plenum, next to the head on the top side... basically middle of the valve cover, go over to the passenger side of the valve cover - straight down. single wire deal. It rarely goes dead, but the wire might get unplugged.

all_terrain17 · 01-12-2007, 09:12 PM

Probably right, dcg...Wondered what that plug was for

Guess I can at least point it out...

Sorry for the misinfo

nelson1969 · 01-14-2007, 09:48 PM

thank you for the info. but if wires are all plugged then the temp. sensor needs to be replaced?

DudeBud · 01-14-2007, 09:54 PM

Quote:

Originally Posted by nelson1969

thank you for the info. but if wires are all plugged then the temp. sensor needs to be replace?

first pull the plug from the temp sender and find something to ground it out with. ground it out and turn the key on make sure the gauge goes all the way up. if it does then your wiring and gauge are fine.. swap out the temp sender. i have a weird problem with mine but its the gauge. i can tap the cluster and it will start working..

dcg9381 · 01-15-2007, 08:11 AM

Quote:

Originally Posted by DudeBud

first pull the plug from the temp sender and find something to ground it out with. ground it out and turn the key on make sure the gauge goes all the way up. if it does then your wiring and gauge are fine.. swap out the temp sender. i have a weird problem with mine but its the gauge. i can tap the cluster and it will start working..

Don't do that unless you'd like a burnt up temperature gauge.
Ground it through a test light or some other resistor, otherwise you're not limiting the current flow in that circuit.
It probably won't short immediately, but holding it grounded is a bad idea.

DudeBud · 01-15-2007, 10:43 AM

Quote:

Originally Posted by dcg9381

Don't do that unless you'd like a burnt up temperature gauge.
Ground it through a test light or some other resistor, otherwise you're not limiting the current flow in that circuit.
It probably won't short immediately, but holding it grounded is a bad idea.

its just for a sec and wont hurt the gauge..

01-12-2007, 08:56 PM	#2 (permalink)
all_terrain17 Registered User Join Date: Apr 2006 Posts: 748	EDIT: Useless post __________________ 94' Pickup Last edited by all_terrain17; 01-12-2007 at 09:14 PM.

01-12-2007, 09:04 PM	#4 (permalink)
dcg9381 Registered User Join Date: Jun 2006 Location: austin, tx Posts: 1,825	That's the temp sender for the ECU.. I could be wrong here, as I know the earlier EFI system better.. On the pre 88.5 systems, the temp sensor for the gauge is in the lower plenum, middle of the plenum, next to the head on the top side... basically middle of the valve cover, go over to the passenger side of the valve cover - straight down. single wire deal. It rarely goes dead, but the wire might get unplugged. __________________ http://www.22REturbo.net

01-12-2007, 09:12 PM	#5 (permalink)
all_terrain17 Registered User Join Date: Apr 2006 Posts: 748	Probably right, dcg...Wondered what that plug was for Guess I can at least point it out... Sorry for the misinfo __________________ 94' Pickup

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01-12-2007, 09:04 PM	#3 (permalink)
timebandit Registered User Join Date: Jan 2007 Posts: 88	The sensor for the temp gauge has one wire. It it way down the middle of the intake between the middle cylinders. It can be seen from the top.

01-14-2007, 09:48 PM	#6 (permalink)
nelson1969 Registered User Join Date: Jan 2007 Posts: 4	thank you for the info. but if wires are all plugged then the temp. sensor needs to be replaced?