Water temp sensor

[Bill Shaw]

I have 2 issues,  they're probably independent.  The one I'm chasing 
with the new sensor is that the gage drops to 0.  Sometimes it seems to 
work OK,  other times it's off the bottom of the scale.  So I should be 
looking for the sensor up bu the radiator ,  not on the bypass pipe at 
the rear of the head?

Second problem is an intermittent misfire.  I got an error code that 
said 'intermittent misfire' IIRC,  nothing more descriptive.  The dealer 
would just throw parts at it,  coils, wires, modules.  I'm hoping I can 
solve a little smarter,  and not just shotgun it,  but not sure where to 
start.  It seem so pop more at low rpms,  and part throttle,  seems to 
run much better at high rpms and wot.  Any thoughts on how to isolate 
the problem?

Thanks,

Bill

> Cody Forbes wrote:
>
> Bill Shaw wrote:
>   
>> Hi All,
>>
>> I bought a new water temp sensor for my wife's '99 A6QA but iy appears
>> to he wrong part.  The one I got is green with sort of a horseshoe
>> shaped connector.  The one in the car is blue with a square shaped
>> connector.  It's on the rear of the passanger's side head,  right? Am
>> I looking at the right part?
>>     
>
> There are two. The green one goes up by the radiator in the lower hose. 
> Which one you need depends on the problem you are facing. I've replaced a 
> dozen of each on customer cars! I tend to get them confused, but IIRC the 
> one up by the rad is for the gauge and fans, the one on the back of the 
> passenger cylinder head is for the ECU.
>
> Whats your code/complaint/etc?
>
> -Cody Forbes
> http://www.5000tq.com
> '87 5ktq - Fast.
> '86 5ktqCD
> '86 5k
> '86 5k 
>
>
>