TRNW-2: 47RE, No Bull noise filter

[Tod Chretien]

[/this is most always the issue with these things./]

Not necessarily! I have fixed hundreds of them with the noise filter. 
Here is how to test it.

Attach a scope to the TPS wire at the PCM and monitor the circuit ona  5 
volt scale. With the Key on and Engine Off, the circuit should show a 
straight smooth line at about 1/2 a volt. Now start the engine. If the 
straight line is now a severely jagged line, and voltage is very erratic 
with the engine running, then a noise filter will fix it.

-- 
Best Regards,
Tod Chretien
TRNW Inc.
https://www.trnw.net

On 9/29/2025 6:11 AM, greg--- via trnw2 wrote:
> TRNW E-Mail Forums
>
> Here you go. But I would check all grounds and power connections to 
> batteries and fuse boxes, this is most always the issue with these things.
>
> Hope it helps.
>
> Greg
>
> *From:*trnw2-bounces at trnw.net <trnw2-bounces at trnw.net> *On Behalf Of 
> *Barry Nyhuis via trnw2
> *Sent:* Monday, September 29, 2025 9:04 AM
> *To:* trnw2 at trnw.net
> *Subject:* TRNW-2: 47RE, No Bull noise filter
>
> *Date:*Mon Sep 29 6:03:53 PDT 2025
> *Subject:* 47RE, No Bull noise filter
>
> Does anyone have the instructions for the No Bull noise filter 
> installation. I have one on the shelf but the instructions are missing.
> Thanks
> Barry Nyhuis
> Wayne Transmission
>
> Barry Nyhuis
> Wayne Transmission
> Wayne, New Jersey USA
> TRNW Member Since: 4/30/2008
>
>
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