 Idle fluctuation, Rpm between 1000 and 2000 |
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| SWH |
 Feb 5 2025, 11:18 PM
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#1
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Newbie  Group: Members Posts: 12 Joined: 27-April 24 From: Arizona Member No.: 28,084 Region Association: Southwest Region  |
Completed rebuild on 1974 914 2.0 L. All fuel and vacuum lines are also new. Engine idle varies between 1000 and 2000 rpm every few seconds what could cause this?
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| steuspeed |
Feb 10 2025, 11:55 PM
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#2
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Senior Member Group: Members Posts: 1,010 Joined: 12-July 11 From: Portland, Oregon Member No.: 13,308 Region Association: Pacific Northwest |
I had a hunting idle and it went away when I replaed the Manifold Pressure Sensor MPS with a correct untampered one. Cross check your MPS part number and make sure it is correct for your model.
Also, if you look super close at the space down and around your ECU knob, you will see a melted spot in the plastic. That is the factory calibration point for the ECU knob pointer. Massive D-Jet info here https://members.rennlist.com/pbanders/DJetParts.htm |
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Posts in this topic
SWH Idle fluctuation Feb 5 2025, 11:18 PM
brant Did you rebuild the throttle body?
Most of them a... Feb 6 2025, 07:34 AM
ctc911ctc
Did you rebuild the throttle body?
Most of them ... Feb 6 2025, 07:59 AM
worn
Did you rebuild the throttle body?
Most of them... Feb 6 2025, 06:46 PM brant
[quote name='ctc911ctc' post='3190563' date='Feb ... Feb 7 2025, 03:55 PM brant Dup Feb 7 2025, 04:12 PM 76-914
[quote name='ctc911ctc' post='3190563' date='Feb... Feb 7 2025, 05:07 PM TJB/914 [quote name='brant' date='Feb 6 2025, ... Feb 6 2025, 04:21 PM emerygt350 That is interesting, there are not any feedback me... Feb 6 2025, 11:29 AM VaccaRabite I'm going to go with throttle body as the prim... Feb 6 2025, 01:59 PM rhodyguy Known as ‘hunting’? Up and down? Examine the s... Feb 6 2025, 02:06 PM 914sgofast2 You have an uncontrolled vacuum leak somewhere dow... Feb 6 2025, 02:18 PM ctc911ctc
You have an uncontrolled vacuum leak somewhere do... Feb 6 2025, 02:47 PM emerygt350 Hunting normally isn't the result of a vacuum ... Feb 6 2025, 06:53 PM brant I hope you’re doing GREAT. Kent
It’s been a w... Feb 7 2025, 07:01 PM emerygt350 I would go with a leak like brant described if it ... Feb 7 2025, 09:35 PM saigon71 A hunting idle can also be caused by a lean idle m... Feb 8 2025, 06:59 AM emerygt350
A hunting idle can also be caused by a lean idle ... Feb 8 2025, 11:06 AM JamesM
A hunting idle can also be caused by a lean idle ... Feb 10 2025, 10:28 PM SWH Thank for all the feedback on the idle searching p... Feb 9 2025, 12:53 PM ctc911ctc Beautiful Paint Job - do you have a color number? ... Feb 9 2025, 02:47 PM emerygt350 remind me, was it modded at all? I bet you are ju... Feb 9 2025, 02:32 PM Fazasport Can anyone reccomend someone who is currently rebu... Feb 10 2025, 04:13 PM emerygt350
Can anyone reccomend someone who is currently reb... Feb 10 2025, 05:53 PM |
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