CharlieDelta
Bronze Member
I have just been through the fuel sender and fuel gauge blues.
Both my original sender and original meter were faulty.
What is staggering is that it seems that where I live anyway most dealers seem clueless that the sender and the meter have to be matched.
You cant get the impedance in ohms data of the required meter nor can you get the sender ohms range from the dealers.
The cheap Indian seller's meters are the wrong ones for the type of senders we can buy as aftermarket. In short, the sender and meter should match which is I suppose common sense.
I contrast this lack of data with the Automotive fuel gauge and sender market. They clearly provide the data so that you get can get the job done.
I am just posting this data for anyone who wants to change their fuel gauge and sender on the MF135 and want to check things out using basic checks.
It appears that the original senders were 30 ohms, you can easily measure this with a multimeter. Make sure your sender matches your tank size. The sender need to to travel the distance to the tank bottom to read empty correctly. There was a large capacity MF135 tank and a regular capacity one and the sender travel depth varied depending on the tank
So the sender is 30 ohms.
The original meter should read 50 ohms plus or minus 10% Between the B and T terminals. I used a high accuracy low ohms meter that is far more accurate that a regular multimeter on low ohms.
The meter should read 232 ohms plus or minus 10% between the B terminal and the meter/case ground terminal. This 232 ohms I think is the nominal stated range of most meters (240) ohms.
The meter should read 181 ohms plus or minus 10% between the T terminal and the meter/case ground terminal.
I believe I have a after market meter marked "AC" which a direct replacement for the original MF part.
If anyone gets a sender and new meter it would be nice if you can post the data so we can at least try and understand what sender matches what meter.
I also tested a Indian sourced MF135 meter marked 240 ohms with a red needle and red markings for a 1/4 tank. This meter is not compatible as a drop in replacement for the original MF135 sender and is not an original compatible meter. This Indian meter need its own compatible sender. They may well be standard in India MF135's but certainly dont match UK/USA/Canada MF135's fuel gauge sender and meter. Buyer beware!
I am not an expert on fuel senders and meters and I was just fixing the fuel gauge and meter on my MF135. I just got frustrated with the lack of data in their catlogs and dealers who are clueless about something that they should know about and provide data for. Something that automotive catalog houses clearly provide.
Cheers and Beers
Both my original sender and original meter were faulty.
What is staggering is that it seems that where I live anyway most dealers seem clueless that the sender and the meter have to be matched.
You cant get the impedance in ohms data of the required meter nor can you get the sender ohms range from the dealers.
The cheap Indian seller's meters are the wrong ones for the type of senders we can buy as aftermarket. In short, the sender and meter should match which is I suppose common sense.
I contrast this lack of data with the Automotive fuel gauge and sender market. They clearly provide the data so that you get can get the job done.
I am just posting this data for anyone who wants to change their fuel gauge and sender on the MF135 and want to check things out using basic checks.
It appears that the original senders were 30 ohms, you can easily measure this with a multimeter. Make sure your sender matches your tank size. The sender need to to travel the distance to the tank bottom to read empty correctly. There was a large capacity MF135 tank and a regular capacity one and the sender travel depth varied depending on the tank
So the sender is 30 ohms.
The original meter should read 50 ohms plus or minus 10% Between the B and T terminals. I used a high accuracy low ohms meter that is far more accurate that a regular multimeter on low ohms.
The meter should read 232 ohms plus or minus 10% between the B terminal and the meter/case ground terminal. This 232 ohms I think is the nominal stated range of most meters (240) ohms.
The meter should read 181 ohms plus or minus 10% between the T terminal and the meter/case ground terminal.
I believe I have a after market meter marked "AC" which a direct replacement for the original MF part.
If anyone gets a sender and new meter it would be nice if you can post the data so we can at least try and understand what sender matches what meter.
I also tested a Indian sourced MF135 meter marked 240 ohms with a red needle and red markings for a 1/4 tank. This meter is not compatible as a drop in replacement for the original MF135 sender and is not an original compatible meter. This Indian meter need its own compatible sender. They may well be standard in India MF135's but certainly dont match UK/USA/Canada MF135's fuel gauge sender and meter. Buyer beware!
I am not an expert on fuel senders and meters and I was just fixing the fuel gauge and meter on my MF135. I just got frustrated with the lack of data in their catlogs and dealers who are clueless about something that they should know about and provide data for. Something that automotive catalog houses clearly provide.
Cheers and Beers
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