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Coolant Temp Gauge not working.

IraPlayer

Active member
Joined
Oct 3, 2001
Messages
29
Location
Dublin, CA, USA
Corvette
1994 Black/Black Coupe
Hi all.

The coolant temperature gauge is not working on my 94 Coupe.:cry

If I look at the digital display, the ECM is detecting the temperature and it appears to be reasonable as the engine heats up.

Does anyone know how dificult it is to dis-assemble the panel and find out what is wrong. I have the shop manuals, but noticed the failure on the way in to work and don't have them handy.

I hate dash work. It always gets messy (tight quarters, wires going every which way.)

Thanks in advance for the knowledge to come.

Rick
 

-=Jeff=-

Well-known member
Joined
Feb 2, 2001
Messages
909
Location
Bartlett, IL. (Chicago Suburb)
Corvette
1990 ZR-1
Not sure what is entailed for the cluster , but to get the cluster out you will need to drop the hush panel, then the metal support then the steering column.. big job just to get the cluster out
 

IraPlayer

Active member
Joined
Oct 3, 2001
Messages
29
Location
Dublin, CA, USA
Corvette
1994 Black/Black Coupe
I hate to be lazy, but if getting the cluster out is that big a deal and since I have the output from the ECM to fall back on, I think I'll wait until I have a more serious issue before diggin in....

Rick
 

vigman

Motor head!!!!
Joined
Feb 13, 2001
Messages
3,471
Location
Valencia, CA,USA
Corvette
88 Convert ( SOLD ) /1973 coupe 4 speed/1964 Vert!
How do you know

It's not the sender... what makes you think it's in the dash...The ECM & the gauge use different senders!

Mike
 

69MyWay

Well-known member
Joined
Jul 3, 2001
Messages
4,364
Location
Auburndale, Florida
Corvette
1969 Killer Shark
My money is on a bad sender. The computer gets the temp off the water pump housing, and the gauge comes off a head.

Senders go bad all the time.
 

Trance_LT4

Well-known member
Joined
Dec 11, 2001
Messages
140
Location
Suffolk, VA
Corvette
Red 96 LT4 coupe
I had the exact same problem. My digital display worked for the coolant temp, but the dial guage on the cluster read zero. The problem was the temp sender on the head.
 

IraPlayer

Active member
Joined
Oct 3, 2001
Messages
29
Location
Dublin, CA, USA
Corvette
1994 Black/Black Coupe
Thank you all.

As I said, I have the manuals at home. Just assumed :hb they used a common sender, just reported in different displays. Should have realized a bit of redundancy is a good thing.

I will, of course, check the sender.

Thanks again.

Rick
 

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