 Idle Speed Issue - 1975 1.8L |
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| telank |
 Aug 29 2016, 10:00 AM
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Newbie  Group: Members Posts: 8 Joined: 23-August 15 From: Indiana Member No.: 19,091 Region Association: Upper MidWest  |
I'm in need of ideas to resolve an idle speed dilemma. My 914 is a 1975 1.8L which I bought about a year ago. It seems to be very stock and still has the L Jetronic FI system in place. Here is the challenge.... I have been using the process in the Haynes manual for setting idle speed. If I set the speed when the car is warm, the next time t is started cold it is difficult to start and will idle so slow it barely stays running. Once warmed up all is good. If I set the idle speed right after starting before it is up to temperature - after it does warm up - it will be idling at over 2,000 RPM. Outside of this issue the car runs good and strong. The plugs are perfect color - so no indication of too lean or rich mixture. Thanks for your thoughts or ideas!
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Posts in this topic
telank Idle Speed Issue - 1975 1.8L Aug 29 2016, 10:00 AM
Sleepin More than likely a vacuum leak. Set it per the man... Aug 29 2016, 10:05 AM AZ914 What Sleepin said.. Does the L-Jet system have an... Aug 29 2016, 10:12 AM timothy_nd28 Aux Air Valve most likely stuck Aug 29 2016, 10:17 AM telank I have replaced all the vacuum lines so they shoul... Aug 29 2016, 10:25 AM Dave_Darling The early L-jet cars had the same type of AAR as t... Aug 29 2016, 03:28 PM pete000 Like Dave said, the AAR is not working properly. C... Aug 29 2016, 06:54 PM telank Last evening I removed the AAR to investigate the ... Aug 30 2016, 03:10 PM Dave_Darling You appear to have the disc-valve type of AAR.
Yo... Aug 30 2016, 03:30 PM telank Dave,
It definitely is a disc style. Thanks for t... Aug 30 2016, 03:38 PM The Cabinetmaker Will this type of valve provide more, or less air ... Aug 31 2016, 07:55 AM
telank
Will this type of valve provide more, or less air... Aug 31 2016, 08:44 AM The Cabinetmaker I'm aware of the operation, and your assement ... Aug 31 2016, 09:01 AM telank
I'm aware of the operation, and your assement... Aug 31 2016, 09:12 AM The Cabinetmaker Hmm, I think I'm being baited Aug 31 2016, 11:30 AM telank
Hmm, I think I'm being baited
Baited? ... Aug 31 2016, 11:51 AM Dave_Darling One thing that can be done to estimate the amount ... Aug 31 2016, 01:00 PM The Cabinetmaker Dave, I've determined that the stock rotary aa... Aug 31 2016, 01:44 PM Porschef Pardon the hijack; Curt, what cam are you using? ... Sep 1 2016, 04:35 AM The Cabinetmaker Same as yours and same symptoms. It runs, but very... Sep 1 2016, 06:33 AM Porschef
Same as yours and same symptoms. It runs, but ver... Sep 1 2016, 05:44 PM The Cabinetmaker
Same as yours and same symptoms. It runs, but ve... Sep 1 2016, 05:56 PM Dave_Darling I bet you could cut the opening in the disc in the... Sep 1 2016, 03:27 PM orthobiz I had a constantly searching idle on my 1974 1.8. ... Sep 1 2016, 03:57 PM pete000 I have a few AARs and noticed some of the heater e... Sep 1 2016, 04:15 PM telank
I have a few AARs and noticed some of the heater ... Sep 1 2016, 07:43 PM orthobiz Also, my car would idle OK when cold and then conk... Sep 1 2016, 05:27 PM Porschef Ok. I know I tested my AAR and it operated fine. N... Sep 1 2016, 06:06 PM timothy_nd28 I think I'm being baited here. I'm unawar... Sep 2 2016, 07:44 AM Dave_Darling You can disconnect some of the small ones. If thi... Sep 2 2016, 11:18 AM timothy_nd28 You can't even run a Ljet without the oil fill... Sep 2 2016, 01:23 PM The Cabinetmaker Lots of baiting going on these days Timothy. Sep 2 2016, 04:03 PM Porschef Yes, but there's been pretty much one Master h... Sep 2 2016, 06:08 PM porsche913b_sp See my reply on post #19.
You can also see my al... Sep 2 2016, 06:29 PM Mark Henry On the arr there's also a 90 degree rubber elb... Sep 2 2016, 06:30 PM  |
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