temp and fuel guages not working

Sep 3rd, 2002, 03:57 PM

Hi all:

I just bought my '89 Sentra SE (5 speed) last week and am trying to fix some problems with it right now. I need some help with two things though. My fuel and coolant temperature guages are not working. Can anyone give me some guidance in diagnosing the problem. Where should I start checking and such?

Thanks,

Jon

89Sentra · Sep 3rd, 2002, 05:41 PM

make sure there properly plugged in in the back if you didnt check that...

ryco n12 · Sep 4th, 2002, 02:06 AM

Voltage regulator in the back of the instrument cluster

blownb310 · Sep 4th, 2002, 11:41 AM

Ryco is right. This is an easy one: You need to replace the dash voltage regulator. It is mounted on the backside of the dash cluster, and has three wires coming out of it, black, yellow, and blue. Change it, and your fuel and temp gauges are fixed.

Sep 4th, 2002, 06:54 PM

Thanks, I'll try that one first!

RiceBox · Sep 4th, 2002, 10:58 PM

Quote:

Originally posted by blownb310
Ryco is right. This is an easy one: You need to replace the dash voltage regulator. It is mounted on the backside of the dash cluster, and has three wires coming out of it, black, yellow, and blue. Change it, and your fuel and temp gauges are fixed.

Finally someone that knows how to fix the problem. Everybody knows what to change but nobody knows where it is or what it looks like. Where can I get one of the voltage regulators??

blownb310 · Sep 4th, 2002, 11:43 PM

Hi Ricebox, I have never tried to get one from an auto store, so I don't know if they can get them. I have parted out so many B12's over the years, that I have a lifetime supply of them. They never seem to go bad when you've got a pile of them though! The dealer surely can get you one, but there are certainly cheaper ways [junkyard]. By the way, depending on what year your B12 is, the original dash voltage regulator may be smooth backed, and silver in color. Nissan upgraded the replacement ones, and they are black, with large cooling fins. Don't worry about what it looks like, just reconnect the three wires the same way you took them off, and you'll be fine.

Sep 4th, 2002, 11:53 PM

blownb310, would you mind parting with one of those "lifetime supply" of regulators?

AVERAGE · Sep 12th, 2002, 09:15 PM

hey man. if ur supply is that limited . im having the same problem. hook a brotha up!

AVERAGE · Sep 20th, 2002, 03:04 AM

ricebox, u lucky man. i talked to the local dealership and they wanted 45 bucks for that thing! i went to a local salvage yard and still paid 20 bucks for the damn thing. but i needed it because i do like to travel. thanks for the advice@@@@

Sep 26th, 2002, 02:54 PM

I found a VR at a local bone yard. I now have a fuel and temp gauge!

Thanks, blownb310, for the advice.

blownb310 · Sep 26th, 2002, 10:37 PM

Your welcome Jon. I appreciate the thanks. It makes the time I spend helping others worthwhile. This site is very helpful for Nissan enthusiasts!