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> high idle, 3000rpm idle
slotty008
post Jul 24 2022, 03:29 PM
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Hi guys ,
I just hope that someone could help us with the idle of my '75 2.0. I have the car for almost 7 years now and idle was always a little bit too high. We have been trying to correct this but it got worse instead of better. We changed the distributor to a 123 ignition, we changed all the vacuumlines, the AAR has been cleaned out and the idle screw is completely closed.
The car starts at 1600rpm when cold and once it is warm it goes to 3000rpm and the idle stays there. The car pulls very well , a lot better better than when I just had it. (IMG:style_emoticons/default/confused24.gif) (IMG:style_emoticons/default/confused24.gif) (IMG:style_emoticons/default/confused24.gif)
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slotty008
post Oct 31 2022, 08:37 AM
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Update:
By the end of August we finally had some result. My mechanic took the AAR apart again and it's working now. But we still have a minor vacuum leak on the throttle body. Rpm when cold is between 1400 and 1600 but it drops to 1000rpm after a few minutes. I can live with that. I tried to find someone in Europe to fix the throttle body but no succes so far. I also found a new throttle body in Germany but it was so expensive...
BTW, do all 914's have the same throttle body?
In the mean time , I made some long test drives and everything works well. (IMG:style_emoticons/default/biggrin.gif) (IMG:style_emoticons/default/biggrin.gif) (IMG:style_emoticons/default/biggrin.gif)
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Dave_Darling
post Oct 31 2022, 07:03 PM
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QUOTE(slotty008 @ Oct 31 2022, 07:37 AM) *

BTW, do all 914's have the same throttle body?


No, they do not.

All of the 2-liter 914 throttle bodies are the same, but the1.7 and 1.8 ones are a different size and sit sideways rather than straight up-and-down. I think the 1.7 ones are different from the 1.8 ones as well, but I'm less sure on that.


Can you please ask your mechanic if he has a smoke machine? This has been suggested at least four or five times so far in the thread--for a good reason. It can help you find exactly where leaks are.

Really, seriously. SMOKE MACHINE. Fill the intake with smoke and see where it comes out. You really really want to know where the problem is rather than firing the "parts cannon" at the engine and hoping the problem goes away.

--DD
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slotty008
post Nov 1 2022, 04:39 AM
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QUOTE(Dave_Darling @ Nov 1 2022, 02:03 AM) *

QUOTE(slotty008 @ Oct 31 2022, 07:37 AM) *

BTW, do all 914's have the same throttle body?


No, they do not.

All of the 2-liter 914 throttle bodies are the same, but the1.7 and 1.8 ones are a different size and sit sideways rather than straight up-and-down. I think the 1.7 ones are different from the 1.8 ones as well, but I'm less sure on that.


Can you please ask your mechanic if he has a smoke machine? This has been suggested at least four or five times so far in the thread--for a good reason. It can help you find exactly where leaks are.

Really, seriously. SMOKE MACHINE. Fill the intake with smoke and see where it comes out. You really really want to know where the problem is rather than firing the "parts cannon" at the engine and hoping the problem goes away.

--DD

My mechanic still doesn't have a smoke machine, but I have all the ingredients for making one myself. I'm gonna put everything together but I have another job to do first:put extra isolation on my attick (IMG:style_emoticons/default/dry.gif) (IMG:style_emoticons/default/dry.gif)
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Posts in this topic
slotty008   high idle   Jul 24 2022, 03:29 PM
BeatNavy   I'm going to say you have: a. a vacuum line d...   Jul 24 2022, 04:05 PM
porschetub   I'm going to say you have: a. a vacuum line ...   Jul 24 2022, 07:12 PM
Lockwodo   Hi guys , I just hope that someone could help us ...   Jul 24 2022, 04:38 PM
wonkipop   test the AAR after the car has completely warmed (...   Jul 24 2022, 05:00 PM
cgnj   Broken intake gasket. Paid big dollars in the earl...   Jul 24 2022, 05:40 PM
Rand   3k? Definitely a huge vacuum leak. Timing can...   Jul 24 2022, 06:07 PM
emerygt350   Yeah, 3k is way too high for AAR as well. Get you...   Jul 24 2022, 07:09 PM
slotty008   Thank you guys for all the suggestions. I'm go...   Jul 25 2022, 01:01 AM
slotty008   My mechanic picked up the car this morning and thi...   Jul 25 2022, 05:59 AM
emerygt350   My mechanic picked up the car this morning and th...   Jul 25 2022, 06:48 AM
VaccaRabite   Go find my thread on making a home-built smoke mac...   Jul 25 2022, 07:37 AM
dr914@autoatlanta.com   if the thottle is completely closed then you have ...   Jul 25 2022, 09:09 AM
StarBear   :popcorn:   Jul 25 2022, 09:27 AM
Rand   George chimed in with nothing that wasn't alre...   Jul 26 2022, 04:16 PM
slotty008   Update, This afternoon I got a call from my mechan...   Jul 29 2022, 01:38 PM
StarBear   AARs are available. One sold here just a few days ...   Jul 29 2022, 04:52 PM
Lockwodo   AARs are available. One sold here just a few days...   Jul 29 2022, 05:14 PM
slotty008   AARs are available. One sold here just a few day...   Jul 30 2022, 02:05 AM
wonkipop   [quote name='StarBear' post='3019035' date='Jul ...   Jul 30 2022, 02:55 AM
wonkipop   AARs are available. One sold here just a few days...   Jul 29 2022, 08:26 PM
brant   Sounds like he suspects the bushings holding the b...   Jul 29 2022, 05:23 PM
StarBear   Ahhh. Didn’t pick up on that. Thanks!   Jul 29 2022, 10:14 PM
slotty008   Update: I ordered a throttle body gasket and the r...   Aug 9 2022, 12:57 PM
DRPHIL914   Update: I ordered a throttle body gasket and the ...   Aug 9 2022, 01:13 PM
rjames   Throttle body is likely worn to some degree (they ...   Aug 9 2022, 01:33 PM
slotty008   Update: By the end of August we finally had some r...   Oct 31 2022, 08:37 AM
76-914   Update: By the end of August we finally had some ...   Oct 31 2022, 09:03 AM
Dave_Darling   BTW, do all 914's have the same throttle body...   Oct 31 2022, 07:03 PM
wonkipop   BTW, do all 914's have the same throttle bod...   Nov 1 2022, 04:23 AM
slotty008   BTW, do all 914's have the same throttle bod...   Nov 1 2022, 04:39 AM
slotty008   Now that I'm retired, I've finally found t...   Mar 18 2023, 04:55 AM
slotty008   RE: high idle   Mar 18 2023, 04:57 AM
VaccaRabite   Mine leaked at the same place. Ended up replacing ...   Mar 18 2023, 08:59 AM
76-914   Those can be re-bushed. Is there such a word? Any ...   Mar 18 2023, 09:12 AM
rjames   Those can be re-bushed. Is there such a word? Any...   Mar 24 2024, 11:17 AM
emerygt350   On my car the idle screw even leaks when fully clo...   Mar 18 2023, 04:21 PM
slotty008   After disassembling the AAR several times, I gave ...   Mar 24 2024, 09:23 AM
slotty008   Here it is installed.   Mar 24 2024, 09:25 AM
slotty008   I've put a box on it to protect it. The bottom...   Mar 24 2024, 09:28 AM
slotty008   And this is the knob in the cockpit.   Mar 24 2024, 09:33 AM
emerygt350   And this is the knob in the cockpit. I like it...   Mar 24 2024, 02:59 PM
rhodyguy   Do not overlook the stacked elbow. Kind of an obsc...   Mar 25 2024, 11:18 AM


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