88 toyota pickup 22re question

On Mon, 05 Sep 2011 10:21:19 -0700, jim beam wrote:

> On 09/04/2011 11:35 AM, hachiroku wrote:
>> On Thu, 01 Sep 2011 17:45:05 -0700, jim beam wrote:
>>
>>>> Yes, I meant coolant temp sensor. Standing in front of your 22RE, there
>>>> are two sensors side by side on the left hand side of the engine, in the
>>>> front...they should be just in front of the thermostat housing. The sensor
>>>> on the left is the 'start injection time switch', and the one beside it is
>>>> the 'coolant temp sensor'. Do you need the specs for testing them? I can
>>>> dig 'em out if you need 'em, but you'll need a multi-meter to check them.
>>>
>>> yeah, i have that one figured out - it's #2 on my list. it's a
>>> thermistor that the ecu uses for coolant temp measurement. it works fine.
>>>
>>> but there's supposed to be another, called "SWITCH, TEMPERATURE; SWITCH,
>>> TEMPERATURE DETECT, NO.2". it's a switch that remains open below 50C,
>>> then closes when hot. it's supposed to signal the ecu as part of the
>>> emissions/overdrive control.
>>>
>>> <http://www.villagetoyotaparts.com/showAssembly.aspx?ukey_assembly=348529&ukey_produc t=2411848>
>>>
>>> <http://www.flickr.com/photos/38636024@N00/6104875638>
>>
>>
>> Have you managed to figure this out yet?
>
> not yet. still going backwards and forwards on what 89428-20050 is
> supposed to look like.
>
>
>> Unfortunately my 22R experience
>> is limited, and I had W59 transmissions. No AT sensor required.
>>
>> Looking over the diagrams, you could just wire a switch in there...
>>
>> When the engine gets up to temp, flip the switch.
>
> yeah, i've been thinking about that. i'd rather have it working
> properly though. if i do anything invasive, it'll be to upgrade the
> whole retarded management system. the 88's batch injection is /really/
> primitive. [i don't get batch injection - may as well just do throttle
> body.]
>
> and toyota's "documentation" SUCKS.


Nuts. The drill downs on the OEM parts sites used to include diagrams, but
don't seem to any more.

I think what you're looking for is termed Temp sending unit, supra,
switch

It's listed as "Supra" across the spectrum.

It looks like this http://wzops.cn/showpt.aspx?id=61

And that's the one I broke while preparing to remove the head from my
Supra...