 Hunting At Idle, Electrical ??? |
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| 2-OH! |
 Sep 16 2004, 12:00 PM
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Senior Member  Group: Members Posts: 552 Joined: 17-October 03 From: Santa Clarita, Kalifornication Member No.: 1,253  |
1975 2.0 FI Stock
I have narrowed my RPM hunting problem down to: It only does it under heavy electrical load...i.e., headlights on with turn signals or wipers, brake lights, etc...Very seldom does it hunt during the day, when there is no electrical load... But what would make it do that... Need some ideas... 2-OH! |
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| ArtechnikA |
Sep 16 2004, 12:03 PM
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rich herzog Group: Members Posts: 7,390 Joined: 4-April 03 From: Salted Roads, PA Member No.: 513 Region Association: None |
QUOTE(2-OH! @ Sep 16 2004, 10:00 AM) But what would make it do that... steady, reliable voltage reference is essential to the accurate operation of the ECU. |
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| Demick |
Sep 16 2004, 12:26 PM
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Ernie made me do it! Group: Benefactors Posts: 2,312 Joined: 6-February 03 From: Pleasanton, CA Member No.: 257  |
Hunting at idle is usually an indication that the mixture is too lean. Adjust the knob on the ECU. Check fuel pressure. Check for vacuum leaks. etc.etc
Even though you only see it during high electrical load, it could just be that the mixture is lean, but until the alt puts a small load on the engine it seems to run fine. Once that load is there it starts hunting. Demick |
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