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Old Jan 25, 2016 | 04:37 PM
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Temperature

HI you guys.

When I first bought it the temperature sending unit in back on the 4.9 efi, near the dog house was broken. So initially I didn't have a read. Once I installed a new one, it I never had any overheating issues. I have many other issues.
My concern is that I'm running rich, so I decided to replace the thermostat, but lo and behold I failed this time around. The head just came off the first bolt (it is really cold hear in NY, and I didnt think about torching it before hand).. and I figured, leave it at that for the time being (I dont want to pay 200 to replace the thermostat).. Since it runs and drives. So I'm curious as to the temperature on the 4.9l efi. Would it run on N-0 with a 160 thermostat, or is my intuition that its bad, right?
Also my cluster has the battery amp light come on and off during driving specifically over bumps.

Maybe the Temp sending unit is not the right one as it was different, and I had to jerry rig it, since the nut didnt fit on. My wire didnt have a rubber cap. But rather a nut and a spacer that goes inbetween. It does give a reading but maybe im good.

Any response is appreciated



 
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Old Jan 28, 2016 | 09:14 AM
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The stock gauges are not accurate, If it has good heat then I'd just leave it alone unless you want to hook an accurate mechanical gauge up to it.


You busted the head off the T-stat housing?, at some point the gasket is going to fail and you'll blow the coolant out.


I would check all the connections from the battery and the alternator, look for broken or corroded wires also.
 
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Old Jan 28, 2016 | 09:36 AM
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it was a little too cold for that bolt. The head just twisted right off. (with alot of pressure of course.)

Yeah, I'll probably just keep driving for the time being. Worse case I got AAA
 
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Old Jan 28, 2016 | 09:47 AM
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I actually think the previous owner must have glued that head back on. Because when I bought it, he had a thermostat gasket for me... He gave it to me and said here you go a free gasket.

I've never had a bolt break on me before, it was quite disappointing considering the circumstances.
 
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Old Jan 28, 2016 | 08:54 PM
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oil pressure looks high
 
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Old Jan 28, 2016 | 10:14 PM
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what would that mean, bad oil pump?
 
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Old Jan 29, 2016 | 06:18 AM
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I think your gauges are not accurate.
 
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Old Jan 29, 2016 | 07:37 AM
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My vans temp gauge is in the same position, although your oil pressure is slightly higher.
 
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Old Jan 29, 2016 | 10:19 AM
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From: In my house..
oil pressure 'appears' high.
water temp 'appears' low.
DON'T guess with temps and pressures !!
Infrared temp guns come in handy right about now..
So does an oven thermometer resting in the radiator..
get creative and figure it out

I'm not sure about the vans but didn't Ford use a resistor behind the dash panel that would affect gauge operation ?
 
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Old Jan 29, 2016 | 10:23 AM
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From: In my house..
Originally Posted by moishloi
what would that mean, bad oil pump?
It could mean a bypass valve is stuck shut but the chance of that happening is slim to none..
10x out of 10 when the oil pump fails pressure drops..
 
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Old Jan 29, 2016 | 10:31 AM
  #11  
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From: In my house..
Originally Posted by moishloi
I actually think the previous owner must have glued that head back on. Because when I bought it, he had a thermostat gasket for me... He gave it to me and said here you go a free gasket.

I've never had a bolt break on me before, it was quite disappointing considering the circumstances.
you'll need these..
Hand Tools 3-piece Screw Remover Set | Part Number 52154 | GUARANTEED FIT from Sears PartsDirect

Wd40
propane torch
drill bits
drill
hand tools

youtube video "how to extract broken bolt from thermostat housing", a few beers and lot's of patience
 
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