Re: [DML] RPM and Lamba Relay Clicking
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Re: [DML] RPM and Lamba Relay Clicking

Sounds to me like your new RPM relay is defective. It powers the lambda 
relay as well as the fuel pump. The fuel accumulator will make up for 
short term drops in pump pressure but why touch the mixture screw? First 
rule of any DIY mechanics - if something goes wrong - what did I do 
last? I hope you put it back to where it was otherwise you'll have 
trouble startting from cold now.

When the engine is hot and the lambda system is working properly, 
adjusting the mixture screw should cause the frequency valve to change 
in note. if it doesn't and pressing the full throttle switch doesn't 
either, you probably have a worn out lambda sensor


rickmichaels wrote:

>I have installed all new relays in my car after trying to 
>unsuccessfully replace the 555 timer in the original RPM relay.  Now 
>when my car runs the RPM and Lamda relays click constantly about every 
>second.  The car seems to run and idle fine but I know this clicking 
>isn't right.  When I checked the engine for anything unusual I can 
>hear what I believe is the frequency valve sounding a constant 
>buzzing.  I tried adjusting the fuel mixture screw but that didn't 
>seem to make any difference.  Does anyone have any ideas on what might 
>be wrong?

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