Low reading guages
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- Newbie
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- Joined:Sun Dec 17, 2017 3:22 pm
- Location:Manchester
When I bought OME 87L both the temp gauge and the fuel tank gauge were reading something like less than half they should.
I changed the temp sender--no difference. Today I changed the voltage stabiliser--still reading the same.
Any suggestions as where to go now?? Help!
I changed the temp sender--no difference. Today I changed the voltage stabiliser--still reading the same.
Any suggestions as where to go now?? Help!
- Dave B
- Senior Member
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- Location:Wigan,Home of the mighty Warriors
Re: Low reading guages
Try an additional earth with good clean contacts to the (black wire) negative circuit at the rear of the instrument panel.
By the way, dont forget the Lancashire group meeting a fortnight tomorrow 25/1/18.
New Hall Tavern, Cuerdale Lane, Samlesbury, Preston PR5 0XA.
01772 877942
By the way, dont forget the Lancashire group meeting a fortnight tomorrow 25/1/18.
New Hall Tavern, Cuerdale Lane, Samlesbury, Preston PR5 0XA.
01772 877942
Club Member 2035
1970 2500 Mk2 in pimento red[/col
Toyota Avensis T4 Tourer
1970 2500 Mk2 in pimento red[/col
Toyota Avensis T4 Tourer
Re: Low reading guages
When I had this problem a few years ago I found the earth terminal had dropped off the back of the speedo.
Tony.
Tony.
1976 2500 TC. converted to S specs.
Lots of bits
1999 BMW Z3.
2006 BMW 325ti.
Hopefully not needing too many bits.
.
Lots of bits
1999 BMW Z3.
2006 BMW 325ti.
Hopefully not needing too many bits.
.
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- Newbie
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- Location:Manchester
Re: Low reading guages
Just tried an new earth wire --back of speedo to body panel --just the same result!!
So now need to do some serious digging--snag is its b--y cold working out there!
Haven't forgotten about the 25th!
So now need to do some serious digging--snag is its b--y cold working out there!
Haven't forgotten about the 25th!
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Re: Low reading guages
I guess you need to measure the voltage coming out of the regulator. If it's an original mechanical type it should wander about a bit but average to 10V ish. I think you've fitted a new one so that will (probably) be electronic so a steady 10V. Anything less than this is a fault as is much above 10V too!
As your gauges (temp and fuel) are reading low I'd expect the regulator output to be low. If it is, try disconnecting one or other (or both) leads from the regulator to the gauges. Maybe there's a fault in one which is pulling the 10V line down. Hopefully this will help you fault find!
Good luck,
Cheers,
Mike.
As your gauges (temp and fuel) are reading low I'd expect the regulator output to be low. If it is, try disconnecting one or other (or both) leads from the regulator to the gauges. Maybe there's a fault in one which is pulling the 10V line down. Hopefully this will help you fault find!
Good luck,
Cheers,
Mike.
(South Oxfordshire)
Register Member No 0355
1971 2.5PI Saloon Sapphire blue
1973 2.5PI Saloon rust some Honeysuckle
1973 Stag French blue
(1949 LandRover was blue should be light green!)
Register Member No 0355
1971 2.5PI Saloon Sapphire blue
1973 2.5PI Saloon rust some Honeysuckle
1973 Stag French blue
(1949 LandRover was blue should be light green!)
Re: Low reading guages
Hello Aidan,
if your voltage stabiliser is the original bimetal type, ensure that the case is properly earthed also. However as Mike says, if you can do a voltage check that will be very useful. (Analogue meters are better for the bimetal type.)
Alec
if your voltage stabiliser is the original bimetal type, ensure that the case is properly earthed also. However as Mike says, if you can do a voltage check that will be very useful. (Analogue meters are better for the bimetal type.)
Alec
0465
MK1.5 2.5 P.I.
Jaguar MK 2 (Long term restoration.)
Hymer 564 Motorhome.
MK1.5 2.5 P.I.
Jaguar MK 2 (Long term restoration.)
Hymer 564 Motorhome.
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- Newbie
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- Joined:Sun Dec 17, 2017 3:22 pm
- Location:Manchester
Re: Low reading guages
Thanks for all the advice chaps--jobs on hold until this perishing weather lets up a bit. I have a trusty AVO meter so should be able to get some sensible readings.
Wish me luck!
Wish me luck!
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Re: Low reading guages
An Avo would be the ideal instrument for measuring the voltage output. When you do, do check with the negative lead in various places, (speedo, voltage stabiliser, car body etc). All should read the same, but if they don't, that would point to the problem.
Let's hope it warms up a bit. And dries out!
Cheers,
Mike.
Let's hope it warms up a bit. And dries out!
Cheers,
Mike.
(South Oxfordshire)
Register Member No 0355
1971 2.5PI Saloon Sapphire blue
1973 2.5PI Saloon rust some Honeysuckle
1973 Stag French blue
(1949 LandRover was blue should be light green!)
Register Member No 0355
1971 2.5PI Saloon Sapphire blue
1973 2.5PI Saloon rust some Honeysuckle
1973 Stag French blue
(1949 LandRover was blue should be light green!)
Re: Low reading guages
I hope this is not another "no final outcome posted" subject?aidanfisher wrote: ↑Wed Jan 10, 2018 8:02 pmWhen I bought OME 87L both the temp gauge and the fuel tank gauge were reading something like less than half they should.
I changed the temp sender--no difference. Today I changed the voltage stabiliser--still reading the same.
Any suggestions as where to go now?? Help!
Was there an outcome?
Kev
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