Intake Air temp sensor (cont'd)

Ben Swann benswann at
Sat Sep 8 23:30:53 EDT 2007

My understanding is the resistance on these is so sensitive it is best to
soloder them.  I did one using 20guage crimp connectors from Radio shack –
worked ok as these are tiny precise connectors that fit the wire tightly prior
to crimping.  I tried doing a solder job, and not the easiest so you will
likely end up crimping and with the small crimp connectors should be fine –
just do a pull test and no wire wiggle(technical term) in the crimp.


I’m sure the added resistance of the hanging wire strands could have thrown
the sensor reading off, and in this case even a marginal crimp will be
superior to what you had.




[Date: Fri, 7 Sep 2007 08:49:07 -0600

From: "Brandon Rogers" <brogers at>

Subject: Intake Air temp sensor (cont'd)

To: "200 20V List" <200q20V at>

Message-ID: <003201c7f15e$3eb3a950$0f01a8c0 at BCROGERS>

Content-Type: text/plain;     charset="us-ascii"


so after checking resistance across pins 30 and 44, and finding things within
spec (495 Ohms) - I stopped thinking about the problem - plus the CEL light
didn't come back on.  (My urq is wired so the OXS light functions as the CEL).
But then driving yesterday a couple times the power was very flat - like the
ECU was pulling timing waaayyy back or keeping the WGFV open as much as
possible.  And on the way home last night it was not pulling strongly like
normal - a couple times.  So I went back to the IAT wires -pulled the boot off
- my wires are soldered

- and I think they were hanging on by a few strands as they broke off when I
was fiddling.  So hopefully that was my problem.


So my question is what is the list consensus on soldering vs connectors for
the IAT sensor? 





'84 urq w/ 3B


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