 It seemed so simple, Idle get slower as the engine warms... |
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| marc_hines |
 Sep 5 2004, 09:27 PM
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Anal Software Engineer  Group: Benefactors Posts: 102 Joined: 13-November 03 From: Tigard, OR (Suburb of Portland) Member No.: 1,341   |
I changed the oil on my 75 2.0 teener today. The last time I changed oil on a type IV engine I was 17 (I had a 75 bus back then) - I'm 43 now and the dealerships have been doing all maintnence on my vehicles since then.
It all came back to me - wasn't hard at all. No leaks, either. So, flush with this success, I was driving about and noticed that the idle gets slower and slower as the engines warms up. It's get down to about 500 r.p.m. - that's a bit rougher than I like. So, I figure - Mr. Mechanic (carefully concealed as a software engineer) that I would adjust the idle. Right. I should have remeberd the software engineers mantra - that's a hardware problem. My 2.0 has the L-jet FI. The idle is adjusted by moving the clampon the trottle cable end to another location. After fooling with it, giving up - then going back out and trying again, and giving up again - it seemed like the right time to ask for advice. The snag is that if the trottle body is allowed to closed compeletly - the engine dies. So, as the htrottle cable heats up and expands, it get's longer, the idle get slower, and eventually the vehicle idles much too slow. Since I 'Adjusted' it, well, I have made it worse. Any ideas how I can get this idling right? Thanks in advance! Marc... |
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| Ctrout |
Sep 5 2004, 09:31 PM
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Member Group: Members Posts: 377 Joined: 20-May 04 From: Mountain Home, ID. Member No.: 2,091 |
I thought that the idle speed on an L-Jet equipped engine was adjusted by the screw on the throttle body itself. (IMG:style_emoticons/default/confused24.gif) I could be (and probably am) wrong though.
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| qa1142 |
Sep 5 2004, 09:58 PM
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Whiplash Group: Members Posts: 1,514 Joined: 1-June 04 From: Lake Zurich, Illinois Member No.: 2,140 |
Check Oil fill cap. Any vacuum leak there will cause your idle to be funky.
FYI, my 1974 1.8L idle slowly goes up till it is at 1100-1200 when hot, and I still cannot figure it out either. (IMG:style_emoticons/default/laugh.gif) |
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| marc_hines |
Sep 6 2004, 10:09 AM
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Anal Software Engineer Group: Benefactors Posts: 102 Joined: 13-November 03 From: Tigard, OR (Suburb of Portland) Member No.: 1,341 |
I forgot about the other side of the throttle body - I will look for and adjustment screw there - thanks.
Also, I found yesterday the whole oil-filler cap assembly is loose - so I know I've got that to fix. I will pull off the air cleaner and see what else may be messed up. Don't you just love 30 year old cars? Marc... |
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| Levi |
Sep 6 2004, 10:18 AM
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Lick my nuts Group: Benefactors Posts: 623 Joined: 11-March 04 Member No.: 1,783 |
QUOTE(marc_hines @ Sep 6 2004, 09:09 AM) Also, I found yesterday the whole oil-filler cap assembly is loose - so I know I've got that to fix. Fix the filler cap box 1st, you might find that this alone could fix you problem... (IMG:style_emoticons/default/beerchug.gif) |
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