tickover

[pauljmcnulty]

Hi guys,

My '86 N/A sits at around 900, any ideas?

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I have a 1986 Porsche 944 2.5 non turbo and I would like to know 1.what the tickover should be when warmed up 2.Iam unable to lower the tickover any more as the screw is adjusted right out with the tickover at 1000 or just over. Many thanks Alan

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[edh]

adjusted right in surely?

 

[Guest]

try here: http://www.clarks-garage.com/shop-manual/fuel-08.htm

the procedure and settings are listed.

 

[sawood12]

I thought 850 to 900 RPM tickover was just right for our cars?

 

[John Sims]

Yeh, Beaky ticks over at most of those values. Generally within a 10 second time frame. [&:]

 

[PSH]

hmm.. difficult to say Steve, however if the car wasn't used much by the previous owner or only used in town it's possible the blast along A roads did indeed clear out some cobwebs and has allowed the car to breath more. If it's a solid 1200 with no surging I would try screwing in the small screw on top of the throttle housing to see if it will return to 900rpm. If it does and again it's solid then I'd leave it that way. This screw is not truely an idle control screw but it will do in this instance, you can also try tapping the idle control valve situated under the inlet manifold first to see if this let's the idle drop to 900, if it does then you may need a new valve as it's sticking, also it's best to do this first before tampering with the screw on the throttle housing although I mention it here because if the last owner was finding the idle dropping due to the car not being given a proper run then he himself may have adjusted it to get a better idle.

Hope that makes sense...[8|]

Pete