 Idle drop after speed run or coming off freeway..., Why does idle disappear after heavy use? |
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| second wind |
 Aug 31 2019, 12:40 PM
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Senior Member  Group: Members Posts: 862 Joined: 30-December 10 From: Los Angeles, California Member No.: 12,543 Region Association: Southern California 
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Hey guys and gals, car is a '73 2.0 2056 with D-jet, car idles great upon start up and normal driving but disappears after hard driving or freeway drive which warms things up a bit. Fuel pump moved up front. Any ideas out there? Thank you very much.
gg |
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Replies(1 - 1)
| DRPHIL914 |
Sep 1 2019, 09:25 AM
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Dr. Phil Group: Members Posts: 5,821 Joined: 9-December 09 From: Bluffton, SC Member No.: 11,106 Region Association: South East States
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It’s the heat and the CHT, I have see this in my 2.0 d-jet as well before changing the CHT, you could add more resistance in line with the CHT. I did a potentiometer in line and could adjust it and see how much resistance I needed to have a steady idle when hot.
Then you can measure that an add fixed resistance to that value in place of the pot. Phil |
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