 idles low after long runs |
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| ne14914 |
 Apr 7 2003, 10:18 PM
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#1
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Me N My914  Group: Members Posts: 94 Joined: 4-March 03 From: Los Angeles, Cali (Inland Empire) Member No.: 388  |
When I got off the freeway tonight my car seemed to idle really low. I am starting to notice when I drive the car on long drives - 40 -50 miles and the car heats up - it idles really low and it doesnt start as easy as it does when its cold. What could be the problem?
1.7 Djet 1973 |
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Replies(1 - 7)
| Brad Roberts |
Apr 7 2003, 10:22 PM
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#2
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914 Freak! Group: Members Posts: 19,148 Joined: 23-December 02 Member No.: 8 Region Association: None |
HUm..
Could be that your Aux air regulator is closing at a certain temp point, but somebody set the idle before it was closed completely while tuning it. I block the line off to it when I set the final idle speed. You may have also had a vaccuum link that is opening/closing with heat. B |
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| Mike9142.0 |
Apr 7 2003, 10:27 PM
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#3
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Member Group: Members Posts: 219 Joined: 29-January 03 From: Phoenix, AZ Member No.: 208 Region Association: Southwest Region |
Try adjusting the valve's, it sound's like thay may be tight.
My 73 2.0 would not idle when hot started hard hot. Adjusted the valve's and all was good. |
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| Bruce Allert |
Apr 7 2003, 10:29 PM
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#4
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Hellions asleep Group: Members Posts: 3,289 Joined: 19-March 03 From: Eagle Creek, Orygun Member No.: 441 Region Association: Pacific Northwest |
Mine does the same thing. Just the other day it was idling less than 400 RPMs after a 50 mile drive so I adjusted it up to 900.
Now, it idles at 1300 after it warms up. I'm going to try the adjustment like you said, Brad, by closing off the AAR completely. bruce |
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| ne14914 |
Apr 7 2003, 10:34 PM
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#5
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Me N My914 Group: Members Posts: 94 Joined: 4-March 03 From: Los Angeles, Cali (Inland Empire) Member No.: 388 |
I will try adjusting the idle with the AAR blocked and see if that fixes the problem.
Thanks again ~ |
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| ChrisReale |
Apr 7 2003, 10:40 PM
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#6
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Sleazy Group: Members Posts: 2,665 Joined: 20-January 03 From: San Francisco Member No.: 176 |
Is it best toi adjust the idle when the car is warm, say to 950 rpm, or cold, say to 1500 rpm
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| Bruce Allert |
Apr 7 2003, 10:48 PM
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#7
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Hellions asleep Group: Members Posts: 3,289 Joined: 19-March 03 From: Eagle Creek, Orygun Member No.: 441 Region Association: Pacific Northwest |
I've always heard warm. I did it cold once and it was way too low when it warmed because the AAR was open causing the high idle warm up.
bruce |
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| Aaron Cox |
Apr 8 2003, 11:57 AM
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#8
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Professional Lawn Dart Group: Retired Admin Posts: 24,541 Joined: 1-February 03 From: OC Member No.: 219 Region Association: Southern California |
QUOTE(Brad Roberts @ Apr 7 2003, 08:22 PM) Could be that your Aux air regulator is closing at a certain temp point, but somebody set the idle before it was closed completely while tuning it. I block the line off to it when I set the final idle speed. You may have also had a vaccuum link that is opening/closing with heat. All this FI mumbo jumbo makes me (IMG:style_emoticons/default/icon8.gif) " The AAR multiplied by the Tangent of the quasi-cosine theta of the vaccum pull multiplied by the inverse inverted variable....etc" (IMG:style_emoticons/default/laugh.gif) jk Ahhh. THe joy of "set-it a-and-forget-it" Carbs. (IMG:style_emoticons/default/biggrin.gif) |
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