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Author Topic: crappy sending unit?  (Read 2919 times)

Offline frotosride

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crappy sending unit?
« on: December 20, 2015, 07:56:23 pm »

So I installed this sending unit before I left main and it did fine for the ride down to southeast Ga. Well a few weeks ago it started acting up by just random fuel readings and extremely bouncy needle. Then one day the needle peeled to 6 o'clock and the truck stalled. I continued running it until this became the norm and now the needle stays pegged and pump won't run. I'm guessing the sending unit is grounding out causing this any other ideas?
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"Beat it like a red-headed ford"
1987 v10 Silverado(LQ4), 87 R10,83 K20, 83 cucv 6.2 Detroit
2006 Boulevard M109R 109 cid,2019 M109R BOSS
2009 Jeep XK, (future LS Swap)
GSXR 750 engine awaiting go kart

Offline frotosride

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Re: crappy sending unit?
« Reply #1 on: December 20, 2015, 07:59:39 pm »
In know it's the sending unit but what could be causing it.. no more cheap parts..I'm done with that headache. If I can fix this one for the time being then I will until I can afford a quality unit.
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"Beat it like a red-headed ford"
1987 v10 Silverado(LQ4), 87 R10,83 K20, 83 cucv 6.2 Detroit
2006 Boulevard M109R 109 cid,2019 M109R BOSS
2009 Jeep XK, (future LS Swap)
GSXR 750 engine awaiting go kart

Offline hatzie

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Re: crappy sending unit?
« Reply #2 on: December 20, 2015, 10:15:16 pm »
The fuel pump and the sender share the ground. 
Not likely it's a bad sender.  The sender ground is not making electrical contact with the frame. Did you use star washers on the ring terminal?
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Offline frotosride

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Re: crappy sending unit?
« Reply #3 on: December 21, 2015, 11:02:04 am »
The ground still has the star washer. I drove for over 2500 miles without any issues. I'm going to check the grounds in just a few and try to run power straight to the pump with the weather pack connector and see if I get any results.
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"Beat it like a red-headed ford"
1987 v10 Silverado(LQ4), 87 R10,83 K20, 83 cucv 6.2 Detroit
2006 Boulevard M109R 109 cid,2019 M109R BOSS
2009 Jeep XK, (future LS Swap)
GSXR 750 engine awaiting go kart

Offline frotosride

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Re: crappy sending unit?
« Reply #4 on: December 21, 2015, 05:31:16 pm »
Ok well it was just that simple... I ran a temporary ground from the bolt to an  unpainted part of the frame and everything looked good. Guage tracked and the truck started up as well.  I haven't taken it for a drive but I'm sure it is gtg. Now I gotta find out why me drivers idea h7b is clicking
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"Beat it like a red-headed ford"
1987 v10 Silverado(LQ4), 87 R10,83 K20, 83 cucv 6.2 Detroit
2006 Boulevard M109R 109 cid,2019 M109R BOSS
2009 Jeep XK, (future LS Swap)
GSXR 750 engine awaiting go kart
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