1983 944 strange idle problem

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:\) :\) - 20 Jun 2005 04:29 GMT

Hi Guys:) If Im sitting with the car running and tap the gas to lets
say 1500 rpms and let go of the gas pedal quickly the idle drops for a
second past where it should be stopping and almost stalls but picks up
the idle back to normal?? It does this if you rev it up to any rpm and
let go of the gas. It accelerates perfectly. Just changed the plugs
today and cleaned out the throttle body with no success. Looked at
cap/rotor and wires and they are like new. Any ideas?? Thanks!!! :)

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doug - 21 Jun 2005 00:54 GMT

that is fairly common and has to do with how the Bosch Motronic system
works.. there are some things that can done to make the issue smaller
but it will never go away, go to Wilks 944 webstie for more details

http://frwilk.com/early944/menumain.htm

:) wrote:

>Hi Guys:) If Im sitting with the car running and tap the gas to lets
>say 1500 rpms and let go of the gas pedal quickly the idle drops for a
[quoted text clipped - 5 lines]
>
>

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:\) :\) - 21 Jun 2005 04:36 GMT

Hello and Thanks for the reply!! I clicked on the link but the page was
just a picture of a 944 with no more information?? Do you know the
factory "RPM" settings on a 83 944?? Thanks! :)Nel

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darthpup - 21 Jun 2005 12:45 GMT

Get a can of gumout and remove the air filter element. With the engine
idling spray some gumout into the intake. The air flow valve is
probably sticking. I do this about every two years with my 944. Also,
recommend taking the rubber boot loose and spraying a heavy dose into
the valve and let it soak overnight.
Set the idle at 950

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:\) :\) - 21 Jun 2005 19:22 GMT

Thanks for the help!! Should the rpm be 950 with the engine warm and
air conditioning off?? Thanks and I will try the Gum Out today!! :)Nel

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Jack D. Russell, Sr. - 22 Jun 2005 01:24 GMT

===============================================
* Reply by Jack D. Russell, Sr. <jackru$$ell2@notmail.com>
* Newsgroup: alt.autos.porsche.944
* Reply to: All; ":) :)" <porshapower@webtv.net>
* Date:Tue, 21 Jun 2005 19:23:52 -0500
* Subj: Re: 1983 944 strange idle problem
=====================================================

>Hello and Thanks for the reply!! I clicked on the link but the
>page was just a picture of a 944 with no more information?? Do
>you know the factory "RPM" settings on a 83 944?? Thanks! :)Nel

http://frwilk.com/944dme/shudder.htm

Signature

Jack

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:\) :\) - 22 Jun 2005 02:55 GMT

Great!! I appreciate all the help folks!! I am going to give this a
shot!! :)Nel

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tomdean79 - 03 Jul 2005 20:37 GMT

"" wrote:

> Hi Guys:) If Im sitting with the car running and tap the gas
> to lets
[quoted text clipped - 10 lines]
> cap/rotor and wires and they are like new. Any ideas??
> Thanks!!! :)

Had the exact same problem with my Porsche. Replace the air flow
sensor and the throttle housing (think that is the correct name, it
bolts to the inlet manifold), this will cure the problem and have it
ticking over at 950rpm.

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Jeff Jones - 29 Mar 2006 02:37 GMT

Did you ever figure out this idle problem ??????

Thanks JAJ

> Hi Guys:) If Im sitting with the car running and tap the gas to lets
> say 1500 rpms and let go of the gas pedal quickly the idle drops for a
[quoted text clipped - 3 lines]
> today and cleaned out the throttle body with no success. Looked at
> cap/rotor and wires and they are like new. Any ideas?? Thanks!!! :)

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joliett - 01 Apr 2006 02:06 GMT

Yea - it's working like it's supposed to. My 83 - 944 lasted to 500,000
miles original engine and tranny...car was hit in rear so now i have a 1987.

Signature

______
joliett

> Did you ever figure out this idle problem ??????
>
[quoted text clipped - 6 lines]
>> today and cleaned out the throttle body with no success. Looked at
>> cap/rotor and wires and they are like new. Any ideas?? Thanks!!! :)

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darthpup - 04 Apr 2006 13:09 GMT

I think what we are asking is how did you solve the problem?

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