Heater Resistor BJ74

[Shes Mad]

I only have high fan on my BJ74, so I think I need a heater resistor. Its 24V, and I think the part number is 87138-90K01.

Anybody know? I checked Toyota in the US and it did not come up

 

[Malahki]

I got a new one from Radd Cruisers

 

[LDowney]

Sorry to hijack this question in a different direction, but ...

Has anyone recorded the resistances for each coil as built by Toyota? My replacement resistor is dead for all speeds so I am considering fabricating a replacement that would be more rebust and last.

Thanks

 

[Estancio]

Yeah, I could not find that 24v resistor from USA Toyota either. Many years ago I made a "resistor" replacement for my BJ60. Ni-chrome wire that I coiled around a pencil until I got the total resistance I needed. Then I crimped it in place. Seem to remember that I had to come up with about 1.0 ohm of resistance. It worked beautifully as long as I kept the Cruiser. Wish I could recall more details.

 

[bigtreads]

I got a new one from Radd Cruisers

me to - done deal very easy

 

[Ron R]

Heater Resistor BJ74
I only have high fan on my BJ74, so I think I need a heater resistor. Its 24V, and I think the part number is 87138-90K01.
Anybody know? I checked Toyota in the US and it did not come up

Exactly the same partnumber is applicable to my cruiser (HZJ73FRPtop) Replaced it last year. No problem to get it at the dealers.
Was quite pricy thou. IIRC it was around 55 euro or 70 USD.
Replacing it is a half banana job.

If you can't get it over there or replace it by self-fabrication I'm willing to help to get it here and send it to you.

 

[LDowney]

Yeah, I could not find that 24v resistor from USA Toyota either. Many years ago I made a "resistor" replacement for my BJ60. Ni-chrome wire that I coiled around a pencil until I got the total resistance I needed. Then I crimped it in place. Seem to remember that I had to come up with about 1.0 ohm of resistance. It worked beautifully as long as I kept the Cruiser. Wish I could recall more details.

Thanks for all the help to my question. I was able to pull the resistances from a functional resistor.

The basis for my original question was this design did not seem very robust since I have gone through several in just the last few years. With quality support from Radd Cruisers, replacements are available. However, I recall a post from Roscoe voicing a concern that the resistor may have been the source (or a contributor) to a dash fire he had. Combining this consideration with a design that does not appear to be as robust as desired lead to ask about the resistance values. Now to do some research into an alternative.

 

[Estancio]

Very helpful to know the resistances.... will help everyone in future. Thanks,

 

[LDowney]

Thanks for all the help to my question. I was able to pull the resistances from a functional resistor.

The basis for my original question was this design did not seem very robust since I have gone through several in just the last few years. With quality support from Radd Cruisers, replacements are available. However, I recall a post from Roscoe voicing a concern that the resistor may have been the source (or a contributor) to a dash fire he had. Combining this consideration with a design that does not appear to be as robust as desired lead to ask about the resistance values. Now to do some research into an alternative.

Update:
I purchased resistances rated at 100 watts in 2.2, 4 and 6 ohms. I then fab'd a mounting plate that bolts to the firewall just below the heater (the following images should illustrate my solution) with the resistances wired to the heater blower just like a factory resistor.
In test runs, the heater motor works fine the home made resistor.
Now to see how it holds up compared to the original.
Also FYI, the total cost for the three resistances was approximately $16 off Amazon. It took be a few hours to fab my solution (my confidence on electrical wiring is low so I was very slow). In summary, I have saved in out-of-pocket cost, but my free time is limited and of value to me. Hence, I did not really save money here, plus it is a bigger/more bulky solution compared to factory so I paid penalty there too. However, I am hopeful that it will be very durable and worth while after years of use.

 

[Radd Cruisers]

Considering we sell Genuine resistors for $52 CAD and they take about 5 minutes to replace, was it really worth all the effort?


~John

 

[Ron R]

Considering we sell Genuine resistors for $52 CAD and they take about 5 minutes to replace, was it really worth all the effort?


~John

Have to agree more or less
But....... LDowney's creation looks far more robust. I replaced mine about 1.5 years ago and the 'cement' fixing the coils is showing some wear allready. I'll keep an eye on it and if it really gets bad and needs replacing, I'm thinking about using LDownney's setup. Besides that, building my own would cost about a third of the original and is fun to do.

 

[LDowney]

Considering we sell Genuine resistors for $52 CAD and they take about 5 minutes to replace, was it really worth all the effort?


~John

Concur, you summarized better than I did. It might be worth it if it turns out to be never fail solution, but that will be years in the verification.

 

[rojjim]

Can we get an update on your resistors?

 

[Gun Runner 5]

Glad I saw this thread......
My BJ74 is missing the lowest speed position while my HJ75 is missing the first two positions.

 

[Oldtoy74]

Yep I had to replace mine as well,

 

[elkaholic]

Glad I saw this thread......
My BJ74 is missing the lowest speed position while my HJ75 is missing the first two positions.

My 73 must be the twin of your's ..... Missing the same speed

 

[Gun Runner 5]

Having 1 speed inop. on the BJ74 isn't a big deal but having 2 positions inop. on the HJ75 is a pain.

 

[Oldtoy74]

Have to agree more or less
But....... LDowney's creation looks far more robust. I replaced mine about 1.5 years ago and the 'cement' fixing the coils is showing some wear allready. I'll keep an eye on it and if it really gets bad and needs replacing, I'm thinking about using LDownney's setup. Besides that, building my own would cost about a third of the original and is fun to do.

The really don't think cost is an issue, considering we all know were happy to part with hard earned dollars on our cruisers , would it be fair to say it's the challenge to see if you can make one, and bonus points if you make it better than mr yota, "an upgrade "

 

[LDowney]

The really don't think cost is an issue, considering we all know were happy to part with hard earned dollars on our cruisers , would it be fair to say it's the challenge to see if you can make one, and bonus points if you make it better than mr yota, "an upgrade "

I did not succeed with my upgrade to mr yota. Mr Yota was more robust.
The low speed resistor burned out due to inadequate heat transfer. It got sufficiently hot to discolor the paint on the sheet metal plate that the resistors were riveted to. At this point, I stopped and installed the OEM resistor. I considered changes to improve the heat transfer capabilities but opt'd to keep it simple rather than potentially chase this rabbit further.

 

[Oldtoy74]

Know when to hold em, know when to fold em