Bouncing Temp Guage
Thread Starter
Melting Slicks
Joined: Apr 2000
Posts: 2,005
Likes: 0
From: Ridgecrest CA
Bouncing Temp Guage
For about 3 weeks, my temp guage has been bouncing its entire range. Occasionally, it works fine, but not for more than a few minutes at a time.
I presume there is a short in the system somewhere, but I have no idea where to start looking for it.
Any suggestions?
I presume there is a short in the system somewhere, but I have no idea where to start looking for it.
Any suggestions?
Melting Slicks
Joined: Aug 2001
Posts: 3,047
Likes: 124
From: Wichita KS
Re: Bouncing Temp Guage (Berserker78)
For about 3 weeks, my temp guage has been bouncing its entire range. Occasionally, it works fine, but not for more than a few minutes at a time.
I presume there is a short in the system somewhere, but I have no idea where to start looking for it.
Any suggestions?
I presume there is a short in the system somewhere, but I have no idea where to start looking for it.
Any suggestions?
Melting Slicks
Joined: Aug 2003
Posts: 2,135
Likes: 2
From: Dayton Oh
Re: Bouncing Temp Guage (Berserker78)
:iagree: that it is probably a connection problem but it could be a short.
Don't panic. Just remember that the wire running from your temp sending unit is sending a negative current to the temp guage. The hotter your engine, the more ground the sending unit sends to the temp guage. If the wire is touches ground somewhere (IE "shorting out") then it will send mucho negative to your temp guage and peg it.
Here's the order I start doing things (cheapest to costly):
1) Make sure connections are good
2) Find and fix short in wiring
3) Replace sending unit
4) Replace wire from sending unit to guage (one single wire should be all that is required)
5) Replace temp guage
Hope this helps :cheers:
[Modified by marshrat99, 12:21 PM 2/6/2004]
Don't panic. Just remember that the wire running from your temp sending unit is sending a negative current to the temp guage. The hotter your engine, the more ground the sending unit sends to the temp guage. If the wire is touches ground somewhere (IE "shorting out") then it will send mucho negative to your temp guage and peg it.
Here's the order I start doing things (cheapest to costly):
1) Make sure connections are good
2) Find and fix short in wiring
3) Replace sending unit
4) Replace wire from sending unit to guage (one single wire should be all that is required)
5) Replace temp guage
Hope this helps :cheers:
[Modified by marshrat99, 12:21 PM 2/6/2004]
Le Mans Master
Joined: Nov 1999
Posts: 5,768
Likes: 3
From: San Diego CA
Re: Bouncing Temp Guage (Berserker78)
On the drivers side cylinder head between 3&5 cylinders...a single wire goes to it...you are almost certainly looking a a bad connection/ground issue is all. The senders almost never go bad, and the gauge is even more reliable than the sender.
Drifting
Joined: Jan 2002
Posts: 1,500
Likes: 0
From: N.Y
Re: Bouncing Temp Guage (fauxrs)
On the drivers side cylinder head between 3&5 cylinders...a single wire goes to it...you are almost certainly looking a a bad connection/ground issue is all. The senders almost never go bad, and the gauge is even more reliable than the sender.
