Temp Gauge Waivers
03-22-2012, 07:09 PM
#1
Semper Fi
Thread Starter
Temp Gauge Waivers
Hey all,
So I have been having an issue with my temp gauge while driving. I have a 1994 4.9l M5OD. Engine is basically stock. So here is the issue. While driving I have noticed my temp gauge significantly varies in temps. One second it will be sitting right at the N of NORMAL which is where it usually sits at running temp. The next second it jumps to the R or M of NORMAL and stays there for a little bit before jumping right back down to the N. It jumps from position to position fast (does not gradually increase.) And it changes randomly, not in any discernible pattern. I just replaced my water pump, idler pulley, and serpentine belt for regular maintenance. After this work the gauge reads lower than it used to, which I chalk up to a better running engine
but the problem has been going on since before the new work. I did a forum search and came up empty handed. If anybody knows of a thread about this issue please post the link. Is this a normal issue for our trucks? Is it something that has to be addressed or can I just leave it alone? It doesn't bug me, I just want to make sure this issue won't cause damage or result in other engine issues. Any thoughts about why this is happening would be appreciated.
So I have been having an issue with my temp gauge while driving. I have a 1994 4.9l M5OD. Engine is basically stock. So here is the issue. While driving I have noticed my temp gauge significantly varies in temps. One second it will be sitting right at the N of NORMAL which is where it usually sits at running temp. The next second it jumps to the R or M of NORMAL and stays there for a little bit before jumping right back down to the N. It jumps from position to position fast (does not gradually increase.) And it changes randomly, not in any discernible pattern. I just replaced my water pump, idler pulley, and serpentine belt for regular maintenance. After this work the gauge reads lower than it used to, which I chalk up to a better running engine
but the problem has been going on since before the new work. I did a forum search and came up empty handed. If anybody knows of a thread about this issue please post the link. Is this a normal issue for our trucks? Is it something that has to be addressed or can I just leave it alone? It doesn't bug me, I just want to make sure this issue won't cause damage or result in other engine issues. Any thoughts about why this is happening would be appreciated.
03-22-2012, 07:22 PM
#2
broke white boy
flush and fill with some new fluid, get a radiator flush too. napa sells it. but at least flush it out with a hose and water. THEN put in a new thermostat. if still does it then its time to replace the sensor. and if that doesn't work it is time to replace the fan clutch.
03-23-2012, 12:36 AM
#3
Semper Fi
Thread Starter
Thanks fordtrucknut. I appreciate the help. Will it affect the engine if I don't address the issue right away? It's my dd, but going to college makes it hard to find time/resources to do the job.
03-23-2012, 01:01 AM
#4
broke white boy
should be ok, as long as it stays away from the hot side of the gauge.
you might want to at least check the fluid level . if it is low that could make the temp gauge jump too. but normally it will sit on the high side then dip to the middle.
you might want to at least check the fluid level . if it is low that could make the temp gauge jump too. but normally it will sit on the high side then dip to the middle.
03-23-2012, 03:54 AM
#5
Dodge+Ford = always ready
my f150 has been doing that for over a year, flushed the system, no change. i just left it alone since it never came close to overheating even when i was pushing the truck as hard as it would go. iv been told its just the sensor though.
