Why is idle such a problem with our cars?
08-28-02, 12:28 PM
#1
Why is idle such a problem with our cars?
whats the deal here? i know that many people on this forum are posting as we speak trying to figure out their idling problem with their FC. why do these cars have such a problem idling correctly? i bought my T2 about a month ago and the sum'bitch hasn't idled correctly (seldom ran correctly) since i bought it. lets here some input about this my nigs.
08-28-02, 12:43 PM
#2
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Well my N/A has 200k miles on it and idles perfect all the time. I hope I can say the same about my TII when i have it up and running.... Maybe its a TII thing. I am sure you have done a really good check for vacuum leaks right?
And a full tune up. Filters, plugs, wires, Etc.
And a full tune up. Filters, plugs, wires, Etc.
08-28-02, 12:49 PM
#3
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Number of reasons: Injector Issues, Timing Issues, TPS misadjusted or broken, AFM stuck/reading incorrectly, AWS malfunctioning (cold start), vacuum leaks, incorrectly routed vacuum lines, and the list goes on and on, anyone else care to add more?
08-28-02, 01:40 PM
#7
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ive had 3 fc's and always been able to correct the idle issues ....always remember that a high mileage car will have stuff wear out ......i had one that the throttle cable was the problem for the high idle !
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08-28-02, 02:14 PM
#8
Engine, Not Motor
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My '86 base idles fine and always has. Even though there's no ACV and TII injectors w/FD fuel pump, no problems.
My '79 beater idles fine
Hell, even my '86 parts car idled perfectly after I got it running.
I would suspect that most people's idle problems are caused by old leaking vacuum hose, and/or misadjusted TPSs.
My '79 beater idles fine
Hell, even my '86 parts car idled perfectly after I got it running.
I would suspect that most people's idle problems are caused by old leaking vacuum hose, and/or misadjusted TPSs.
08-28-02, 02:25 PM
#9
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Originally posted by vmb
ive had 3 fc's and always been able to correct the idle issues ....always remember that a high mileage car will have stuff wear out ......i had one that the throttle cable was the problem for the high idle !
ive had 3 fc's and always been able to correct the idle issues ....always remember that a high mileage car will have stuff wear out ......i had one that the throttle cable was the problem for the high idle !
08-28-02, 04:19 PM
#18
Old [Sch|F]ool
why is idle such a problem?
Japanese cars have real mickey-mouse solutions for idle control, depending on both computer-controlled and mechanically-controlled mechanisms to obtain the right idle speed for given conditions. Any time you try to make mechanical and electronic controls work together towards the same goal, things go haywire easily because the electronics have to assume the mechanical stuff is working properly.
Japanese cars have real mickey-mouse solutions for idle control, depending on both computer-controlled and mechanically-controlled mechanisms to obtain the right idle speed for given conditions. Any time you try to make mechanical and electronic controls work together towards the same goal, things go haywire easily because the electronics have to assume the mechanical stuff is working properly.
08-28-02, 04:36 PM
#19
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Originally posted by Aaron Cake
The ohm meter method should ONLY be used with the engine OFF.
The ohm meter method should ONLY be used with the engine OFF.
08-28-02, 05:26 PM
#21
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the idle on my car isn´t that bad
it has a little miss every now and then but I have never seen a rx-7 that doesn´t
plugs are good TPS might be off a little but I doubt it
wires, and injectors I think are my issue
at one point I was having flooding issues if I let the car sit too long so again that leads me to believe the injectors..
it has a little miss every now and then but I have never seen a rx-7 that doesn´t
plugs are good TPS might be off a little but I doubt it
wires, and injectors I think are my issue
at one point I was having flooding issues if I let the car sit too long so again that leads me to believe the injectors..
08-28-02, 06:02 PM
#22
what all is actually needed by the engine to control idle. can i remove any **** from the engine bay to simplify things? this idle **** is really getting to me. there are good-lookin girls around, and we are sitting there and my car is liek, 'vroom vr vr vrimm put vroom sputter sputter vroom put vroom put vroom' it aint good.
08-28-02, 06:11 PM
#23
Rotary Freak
Common intake leaks on a tII;
Lower TID hose connecting to turbo
Small hose running from aluminum "splitter" above turbo. The hose runs from splitter to BAC valve.
Found both these to be cracked on my car.
TPS adjustment is tough when engine is hot...
Easy to do when engine is cold. Just disengage the high "cold" idle stuff and the trottle closes to the "hot" possition. Then you adjust your tps as the book says.
Lower TID hose connecting to turbo
Small hose running from aluminum "splitter" above turbo. The hose runs from splitter to BAC valve.
Found both these to be cracked on my car.
TPS adjustment is tough when engine is hot...
Easy to do when engine is cold. Just disengage the high "cold" idle stuff and the trottle closes to the "hot" possition. Then you adjust your tps as the book says.
08-28-02, 06:11 PM
#24
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The major problem is the people who fiddle with the idle system,not the idle system itself.
Four RX-7s over 10 years and one idle problem(on a car which had a j-spec motor installed by a Mazda dealer).
My 10th AE is going on 35,000km without any trouble or adjustment.
I have only used a Mazda light tool for adjustment and it works every time(for TPS adjustment).
The absolute best way to adjust the TPS is to measure the voltage output from it at the ecu(HAILERS has written extensively about this in the past).
Four RX-7s over 10 years and one idle problem(on a car which had a j-spec motor installed by a Mazda dealer).
My 10th AE is going on 35,000km without any trouble or adjustment.
I have only used a Mazda light tool for adjustment and it works every time(for TPS adjustment).
The absolute best way to adjust the TPS is to measure the voltage output from it at the ecu(HAILERS has written extensively about this in the past).