[urq] intake air temp sensor

[Martin Pajak]

Bill,


The resistance sounds a bit high.
As per Phil Payne's site:
http://www.isham-research.com/quattro/wiring/Typ85/mac01pin.html
Detach ECU connector 
Check resistance between ECU connector pins 18 and 19 for 13 to 33 ohms. If bad, proceed: 
Disconnect connector from inlet air temperature sender on top of inlet manifold. With clip uppermost, check for continuity between the left contact and ECU connector pin 18. If bad, repair loom. 
Check continuity between right contact and ECU connector pin 19. If bad, repair loom. 
If all wiring tests passed, replace inlet air temperature sender. 

You are on the very high side and actually above it.
I would check the solder at the actual air temp sensor sounds like there is a bit more resistance in the system than needed.

HTH
Martin Pajak
www.quattro.ca


---------- Original Message ----------------------------------
From: n mko j nm <chapman10 at juno.com>
Date:  Wed, 24 Mar 2004 22:53:57 -0500

>Hi all,
>
>  4000 rpm cutout again! Checked the idle switch and it specs out fine,
>but the IAS seems to be out of whack. Got readings of 38.4 ohms at cpu 
>connector @50 degrees f. ambient temp.and then 38.2 at normal operating
>temp fan cycling.I also checked the connectors at the intake air sensor
>itself and got 21 ohms while engine was running with wires connected. The
>freaky part is that sometimes the car will run like a bear and not miss a
>beat and the next time you jump on it you almost go out the windshield
>when it cuts out.That might be ok if I had GWBush in the passenger seat
>with no seat belt. Just a little humor,hope homeland security doesn't
>monitor posts! Can any one give me some feedback on these readings?
>Thanks in advance.
>
>Bill Chapman
>83 Gobi urq
>
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