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1st Gen Dakota '96 & Older Dakota's

temperature gauge and fuel guage not working

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  #1  
Old 06-20-2009, 11:54 PM
heck heck is offline
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Default temperature gauge and fuel guage not working

Hi All,

I'm new here, I just bought 93' dakota v6 yesterday 93000 miles from the guy nexts door with these kind of problem. because I got a deal on this truck. any help will be apreciated. just don't know where to start tracing the problem.
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  #2  
Old 06-21-2009, 12:32 AM
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Fuel gauge is a very common problem, and basically, is caused by using crappy metal for the sending unit (in the tank). You can try using gas cleaners (Chevron's Techron has been recommended in many places for this), but, it might not work.

For the temperature gauge, go under the hood. On the front of the engine, on the passenger side of the upper radiator hose, you should see a 1-wire connector (the 1-wire should be purple-ish). Make sure that is pressed on firmly to the sending unit.
If that doesn't fix it, it's probably the sending unit (threaded into the block). It's fairly easy to replace (a tight area, but not that bad), and doesn't cost but about $10.

You can try grounding the wire to ground (such as with a jumper wire), and than check the gauge. With the wire to a good ground, the gauge should read full hot. If it doesn't either the wiring is faulty, or the gauge is bad.
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Old 06-21-2009, 12:54 AM
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thanks alot dodgerules for your quick respond, I'll do that.
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Old 06-25-2009, 05:46 PM
meaculpa3x meaculpa3x is offline
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I have the same problems. Changed the temp sender, still doesn't work. I just installed a new fuel pump assembly (because it would stop pumping after 10 minutes of driving), and the gas gauge still doesn't work. The weird thing is the gas guage reads 1/4 tank all the time, even when full. The low fuel light works though so I don't have to worry about running out and getting stranded. Any ideas?
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Old 06-25-2009, 07:51 PM
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I would say that the coolant guage problem may be due to not changing the correct one. There are 2 coolant sensors. 1 1 wire for the guage and 1 2 wire for the comp. The fuel guage may be due to the float stuck. It is very common to accidentally install the float wrong.
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Old 06-26-2009, 06:32 AM
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Quote:
Originally Posted by meaculpa3x View Post
I have the same problems. Changed the temp sender, still doesn't work. I just installed a new fuel pump assembly (because it would stop pumping after 10 minutes of driving), and the gas gauge still doesn't work. The weird thing is the gas guage reads 1/4 tank all the time, even when full. The low fuel light works though so I don't have to worry about running out and getting stranded. Any ideas?
Just for thread continuity, he later solved the fuel gauge problem, in his case, it was the float arm was too long, and was hitting the side of the tank.
http://dodgeforum.com/forum/1st-gen-...-new-pump.html
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Old 06-26-2009, 11:26 AM
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-----

Last edited by meaculpa3x; 06-26-2009 at 11:39 AM..
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Old 06-26-2009, 11:36 AM
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LOL, that was my post. Guess I'm in too many discussions on too many threads, talking about too many dakotas, Mine ('94) and someone elses ('91). I fixed the '91 fuel gauge thing finding the float arm was too long and hitting the side of the tank. The '91 still has the bogging, bucking, sputtering issue though. My '94 only has the fuel gauge and temp gauge thing going on. I have the feeling the fuel gauge thing is going to be the same "long arm" issue. I had just installed a new pump in it too. The thing is I had just bought the '94 and immediately put a pump in it. Since the tank was pretty much empty I didn't know if the gauge ever worked or what. Probably did, it was just empty from the beginning. Now the float is probably stuck agains the was like the '91 was. I'll look into it and post back. Hopefully I can repost to the right thread this time :0)
The temp gauge is still an issue though. It has the one wire sensor and the new looked exactly like the old. Maybe the wire is just bad.
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Old 06-26-2009, 06:07 PM
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Quote:
Originally Posted by meaculpa3x View Post
The temp gauge is still an issue though. It has the one wire sensor and the new looked exactly like the old. Maybe the wire is just bad.
Make sure the connector is fully in-place (the wire on mine likes to pull out, the plastic connector will be all the way on, but I have to push in on the wire itself too).
If that doesn't work, use a jumper wire and short-to-ground the wire. Your gauge should read full hot. It if doesn't either the wiring or gauge is bad. If it does, either the wire isn't making good contact with the sending unit, or the sending unit is bad.
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Old 06-29-2009, 05:14 PM
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What about if the temparture guage moves just above the first line after the engine warms up and sits there the whole time afterwords,
because mine does that but it dosnt get any higher and you cant tell me these engines run that cool
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Old 06-29-2009, 07:49 PM
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Originally Posted by ZackN920 View Post
What about if the temparture guage moves just above the first line after the engine warms up and sits there the whole time afterwords,
because mine does that but it dosnt get any higher and you cant tell me these engines run that cool
You probably have a lower-temp thermostat installed.
The OEM spec is 195 degrees, and that 15 degrees (if you have a 180 in there) WILL make a big difference on the gauge.
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Old 07-02-2009, 01:36 AM
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Quote:
Originally Posted by ZackN920 View Post
What about if the temparture guage moves just above the first line after the engine warms up and sits there the whole time afterwords,
because mine does that but it dosnt get any higher and you cant tell me these engines run that cool
like dodgerules86 suggested, you probably have a 180 thermostat. i have one in mine, and my temp gauge never reads over an eighth over the normal line.
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  #13  
Old 07-02-2009, 11:57 AM
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Well the fuel gauge probelm was in fact the float hitting the side of the tank on my '94, just like the '91. Since I knew what the problem most likely was, I just lowered the tank enough, without disconnecting anything, to loosen the pump enough to just rotate it while it was still inside the tank. Bingo! The float was against the wall and the gauge now works. Still have to look into the temp gauge though, just haven't had the time.
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Old 07-04-2009, 11:55 PM
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hi all,

Thanks all the info. I have now fix my temp. gauge problem. after I read the tread about thermostat. so what I did is flush my coolant change the thermostat with 195 and change the coolant temp. sensor, I change also my coolant temp. sending unit. and my temp. gauge work properly. as for fuel gauge just order 1 online fuel pump assy. cost me $111.79 plus shipping at rack auto. I have question. which is easier to remove the fuel pump. remove the tank or remove the bed. I need suggestion or commet on this. again thanks for all the info.
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Old 07-05-2009, 07:37 PM
meaculpa3x meaculpa3x is offline
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It's really easy to just remove the tank. First disconnect the fill and vent hoses up behind the fuel door, then remove the two nuts that are above the driveline on the tank straps and bend the straps back out from underneath the tank, then just lower it down. First siphon all the gas out so it's not heavy. Once the tank is about 1/2 way down you'll have to then disconnect the wiring harness and gas lines from the top of the pump assembly before bringing it all the way down. Pull it out from under the truck and replace the pump assembly, making sure the float will not be hitting the side wall of the tank when it floats up. Then install the tank in reverse order.
If you pull the bed off, you still have to disconnect the fill and vent hoses and the tail lights and any other wires, lines, hoses that may be attached to the bed. Then all the bolts fastening the bed to the frame, then get a couple guys to help lift the bed up and off. More trouble if you ask me.
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Old 07-05-2009, 07:37 PM
 
 
 
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1992, 91, coolant, dakota, diesel, dodge, fix, fuel, gauge, guage, sender, temp, temperature, work, working

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