Help!Check gage light on, fluctuating temp gage - DodgeTalk : Dodge Car Forums, Dodge Truck Forums and Ram Forums
DodgeTalk : Dodge Car Forums, Dodge Truck Forums and Ram Forums
 HOME  FORUMS  GALLERY  GARAGE  TECH  CLASSIFIEDS  LINKS  MEMBER MAP  ARCHIVE  SPONSORS
INFO SITE HELP ARCADE TELL-A-FRIEND STAFF CONTACT US AUTO LOANS


DodgeTalk.com is the premier Dodge forum on the internet. Registered Users do not see the above ads.Please Register - It's Free!
Go Back   DodgeTalk : Dodge Car Forums, Dodge Truck Forums and Ram Forums > Dodge Truck, SUV and Van Forums > Dodge Ram Truck 3rd Gen (02 – 08) Forums > 3G Dodge RAM - General Talk

Closed Thread
 
Thread Tools

MetallicRam04
 
  Unhappy Help!Check gage light on, fluctuating temp gage - Posted: 01-06-2009, 09:03 PM
MetallicRam04's Avatar
Registered User
Joined: Nov 2008
Posts: 259
State: LA
Status: Offline
Post #1

My 04's check gage light comes on and the temp goes straight to Hot! (fluctuating back and forth)It's nothing to do with the radiator, water pump, or the rest of the cooling system. It seems to me a short of some sort. I changed the coolant sensor and still nothing works. Has anyone had this problem?
View Public ProfileSend a private message to %1$sSend email to %1$sFind all posts by %1$sAdd %1$s to Your Buddy List Reply Reply With Quote
Sponsored Links
Advertisement
 

piper18
 
 Posted: 01-06-2009, 09:46 PM
piper18's Avatar
Great View
Joined: Oct 2007
Posts: 1,048
City: Fond du Lac
State: WI
Status: Offline
Post #2

Sounds like a wiring issue.
__________________
2008 Dodge Ram 1500 4x4 SLT, 5.7 Hemi MDS, Regular Cab, Long Box, 3.55 LS rear end ,17" cast wheels, Flame Red

Member of the Red Truck Club #231


Switch installed in chime circuit to turn off chime Click to learn How To add a switch to the chime circuit
Installed MDS indicator light on dash ---Click to learn How To install a MDS light
Tools Box w/ lights inside tided to cargo light
Custom made deer guard 2" pipe
Sportsmaster Tonneau cover w/top gun fabric
Mopar rear wheel liners
Iron Cross stainless 3" step bars
Tailgate open indicator light
9005 fog light bulbs
View Public ProfileSend a private message to %1$sSend email to %1$sFind all posts by %1$sAdd %1$s to Your Buddy List Reply Reply With Quote

dmcelhannon
 
 Posted: 01-07-2009, 01:32 AM
dmcelhannon's Avatar
Moderator David Mack
Joined: Apr 2006
Posts: 27,998
City: McAllen
State: TX
Status: Offline
View This User's Gallery
View Member's FaceBook Profile
Post #3

Maybe this will help, it's from a past DT Thread.

-----------------------

If you're hearing water running though your heater core, you have air in the cooling system. You need to park the truck in the driveway with the nose sitting higher than the rest of the truck. While the trucks engine is cold, get under the hood and remove the cap. Start the truck and put the heater on high-heat. Double check the level in the bottle and fill it up to the cold mark. Now just let the truck idle while it warms-up slowly. You need to be careful here because if the system has an air pocket, it could flash-boil on you. If it does that, it’ll push coolant out like “Old Faithful”; so be careful. As a safety measure, you can put the cap on but leave it loose. That way if it flash-boils, it won’t hose you down with hot coolant; not fun! As the coolant flows though the bottle, you can feel when the thermostat opens as the upper hoses gets hot. You need the thermostat to stay open a number of times because it the only way to get the air out of the system. Check the gauge on the dash from time-to-time and when you’re sure the coolant is hot, the thermostat has open-n-closed effort times, and the level in the bottle is full to the hot fill line, you can bet the air is out of the system now. Tighten the cap. Turn the heater off and you’re done purging air from the coolant system. There’s a purge tap on top of the engine but if the bottle is sitting higher, it’s the better choice. I’ve never be able to use the bleeder tap without getting hot coolant all over me and the whole engine. That and I hate the feel of coolant on my arms and hands.

Now you can check the cooling fan. Nothing is harder on the cooling system than the time the vehicle is sitting still with no air-flow though the front of the vehicle. When you first start the truck, you won’t hear the fan after the first few seconds. But as the truck just sits there, the air flow though the radiator gets hotter, and the fan clutch begins to get a little heat into it, the clutch will began to lock-up. You should be able to hear the fan pulling air though the radiator. Keep checking the gauge on the dash and watch where it peaks. Where does the gauge set as you drive down the road? That’s about where the needle should be now as your truck just sits with the engine idling. If the trucks temperature keeps climbing, you could very well have a bad fan clutch.

Move you hand across the face of the radiator. Check for cold spots or areas that seem much hotter than the rest of the surface. If the temperature isn’t uniform, you could have a plugged radiator core. Stop leak products have a bad habit of plugging good and bad areas within the core.

After checking all of this and the system just seem to be running too hot, you could have a thermostat that’s not opening fully. Checking or testing it will take more time than the thing is worth. They’re pretty cheap so just replace it. If you’re going to take the time to replace it, you need to make a choice; do I flush the cooling system or use the old coolant. And since you think there maybe stop leak in the system, you need make a choice about using an acid flush though the system. The acid flush should clean that crud out of the system. If you use the acid flush, you need to remember to open up the heat core as well.

__________________
2002 Ram 1500 SLT 4x4 QC ~ 02 Ram 45RFE to Jeep GC TCM 5-45RFE Upgrade - (Nov.01) 4.7L with 85K/3142hrs, Knolton Thunder Cylinder Heads & HO Cams by Sawcut, 4.56 R&P/DTT, SRT-10 Pod w/Dynojet Wideband Commander, 2-speed manual transfer case, Clifford Security System w/Auto Start/Auto Windows, RB1 CD/DVD/NAV Infinity Sound System w/30GB iPod, Offroad Package, 33" BFG T/A KO, Mopar Rear Wheel Liners, EBC Greenstuff Roadsport Brake Pads, K&N w/Airaid Jr Modular Intake Tube, BBK 70mm Throttle Body, AIR_RAM Jet Stream Scoop, PML Diff Cover, ASP Underdrive Crank Pulley, MSD 1.65 Alt Pulley, V8 Lincoln E-Fan, FK-60 E-Fan Controller w/relay, 180 Jet T-Stat, Flowmaster SI/DO Exhaust, Tire-2-Tire Chrome Tuber Step, Line of Fire LED Light Bar, Sylvania Ultra Silverstars, $1600 Oil Pickup Tube

Texas 1845: We the People of the Republic of Texas, acknowledging,
with gratitude, the grace and beneficence of God.


~ Waiting to fix my Ram! ~ 2-Years and Counting! ~


View Public ProfileSend a private message to %1$sSend email to %1$sFind all posts by %1$sAdd %1$s to Your Buddy List Reply Reply With Quote

MetallicRam04
 
 Posted: 01-07-2009, 09:19 PM
MetallicRam04's Avatar
Registered User
Joined: Nov 2008
Posts: 259
State: LA
Status: Offline
Post #4

thanks for the feedback, I had a mechanic check it with his computer and meter, and everything seemed ok except for the occasional fluctuating . He cleared 2 codes for the temp gage and my gage only goes up 1/4 of the way. Other than that my truck drives fine.
View Public ProfileSend a private message to %1$sSend email to %1$sFind all posts by %1$sAdd %1$s to Your Buddy List Reply Reply With Quote
Closed Thread


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Trans Temp Light On dizzy0573 1G Dodge Durango - Drivetrain Talk 7 06-28-2007 08:34 AM
Transmisson temp light stays on lost OD dsmile1968 2G Dodge RAM - Drivetrain Talk 11 01-03-2005 11:00 PM
Temp gage is fluctuating from 180 to 250 please help StressboyD 1G Dodge Durango General Talk 7 11-09-2004 02:15 PM
Durango Trans Temp Light mcguiver3@aol.c 1G Dodge Durango General Talk 1 04-11-2003 12:33 AM



All times are GMT -5. The time now is 06:40 PM.





Privacy Statement