Very low idle in Gear
10-15-05, 09:20 PM
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Very low idle in Gear
Hi Everybody:
I have a 93 Auto FD and I'm trying to figure out how to resolve my low idle when in gear issue. Let me note that I have made an attempt to search, and I've read numerous threads, but I have some other questions...so please bear with me. When the car is in Neutral (and the car's all warmed up) The idle sits at 750 with 250-275 mmHg of vaccum, but when I have the car in gear it idles around 550 - 600. My local rotary shop replaced the Air Temp Sensor, but what else should I look at/replace to get it to idle correctly? I had a compression check a couple months back and I had 102 psi on the front and 105 psi in the rear. Boost pattern is .9 kg/cm² for the primary and for the .5 kg/cm² on the secondary. Any suggestions on what to look at? Thanks!
I have a 93 Auto FD and I'm trying to figure out how to resolve my low idle when in gear issue. Let me note that I have made an attempt to search, and I've read numerous threads, but I have some other questions...so please bear with me. When the car is in Neutral (and the car's all warmed up) The idle sits at 750 with 250-275 mmHg of vaccum, but when I have the car in gear it idles around 550 - 600. My local rotary shop replaced the Air Temp Sensor, but what else should I look at/replace to get it to idle correctly? I had a compression check a couple months back and I had 102 psi on the front and 105 psi in the rear. Boost pattern is .9 kg/cm² for the primary and for the .5 kg/cm² on the secondary. Any suggestions on what to look at? Thanks!
10-16-05, 08:45 PM
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I know I can always adjust the TPS, but I wanted to know if there is anything else I should check/replace first before resorting to that. Any more suggestions?
10-16-05, 10:48 PM
#4
Get some throttle body cleaner and clean the throttle body first. Then, at normal operating temp set your air screw until you idle sounds normal (located under the throttle body). Lastly, adjust the idle screw to either raise or lower RPM`s.
I keep mine at 900 when in neutral, 750 when in drive.
Good Luck,
Andre
I keep mine at 900 when in neutral, 750 when in drive.
Good Luck,
Andre
10-17-05, 11:23 AM
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Originally Posted by tsmysak1
Does it idle with the AC on in drive?
I have been wrestling with this same problem for some time...
I have some experience I can share.
I have been wrestling with this same problem for some time...
I have some experience I can share.
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10-17-05, 11:59 AM
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Originally Posted by darkside7
250-275 mmHg is pretty low vacum #
10-17-05, 12:00 PM
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Originally Posted by andre sinclair
Adjust the screw on the fast idle cam on the throttle linkage once the a/c is on.
It`s just that simple.
It`s just that simple.
10-18-05, 09:26 AM
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Originally Posted by andre sinclair
900 idle
750 in drive
950 with a/c on and fast idle solenoid engages.
750 in drive
950 with a/c on and fast idle solenoid engages.
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