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Problem: Idling super rich and unstable

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Old 12-05-13, 09:58 PM
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Question Problem: Idling super rich and unstable

Hi all

My rx-7 fd3s idle super rich 10.1 AF ! How can I settle this problem

Thanks in advance
Old 12-06-13, 04:16 AM
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turn it off
Old 12-06-13, 08:07 AM
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How to turn off ? I see many fd also have this problem !You can help me?

Last edited by Ah Teck; 12-06-13 at 08:13 AM.
Old 12-06-13, 08:19 AM
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Are you on stock ecu?

Sent from my DROID RAZR using RX7Club
Old 12-06-13, 08:42 AM
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Vacuum line to MAP sensor plugged in?

Dale
Old 12-06-13, 08:58 PM
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Originally Posted by ondabirdhouse
Are you on stock ecu?

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Yes stock ecu !
Old 12-07-13, 01:01 AM
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Originally Posted by daleclark
vacuum line to map sensor plugged in?

Dale
+1
Old 12-07-13, 04:10 AM
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Originally Posted by Neutron
+1
power fc have one also this problem ! Now no use again !

Last edited by Ah Teck; 12-07-13 at 04:28 AM.
Old 12-07-13, 04:28 AM
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Hi my car is 1992 fd3s AT ! My car is all original my car idle super rich an many black smoke low speed very lag . I change spark plug ,plug carble ,map sensor ,coil ,fuel pump ,fuel filter ,air filter ,air temp sensor ,water temp sensor ,fuel temp sensor ,manual gearbox ,throttel body ,V mouth ,vaccum hose ,dash pot , Purge Control valve ,tps sensor ,BAC valve , fuel injector ,fuel regulator ,ground clable ,spark VSD aslo cannot settle now idle up down up down connect GND to TEN idle no difference ! Who can help me ? Thanks !
Old 12-07-13, 09:58 AM
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What do you mean connected the gnd and ten? If I'm not mistaken that's to check for ecu error codes,wouldn't do anything for idle....... We need more info, what was the last major or tune up type of thing have you done? I had similar issue at first with my power fc but was able to take away some fuel where my car would normally idle.
Old 12-11-13, 02:38 AM
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I had the same problem and i turned out to be my primary coils were bad. The poor car was only running on the secondaries. Also the car felt sluggish, either way I've check for spark.
Old 12-16-13, 08:56 PM
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Originally Posted by Whitetiger777
I had the same problem and i turned out to be my primary coils were bad. The poor car was only running on the secondaries. Also the car felt sluggish, either way I've check for spark.
How to check coil ? I use ohm meter is ok !
Old 12-16-13, 09:50 PM
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Originally Posted by era1oner
What do you mean connected the gnd and ten? If I'm not mistaken that's to check for ecu error codes,wouldn't do anything for idle....... We need more info, what was the last major or tune up type of thing have you done? I had similar issue at first with my power fc but was able to take away some fuel where my car would normally idle.
Now no use power fc ! Is stock ECU my power fc no commander .Use the gnd and ten setting the idle adjustment . The lower idle speed stated in the workshop manual only applies when you connect the TEN and GND terminals in the diagnosis connector - in other words when you adjust the idle speed. Connecting TEN and GND is necessary to temporarily disable the ISC (Idle Speed Control) system. When you set the idle speed to approx. 725 rpm using this method, it will jump to 850 the moment you pull the TEN-GND jumper!
Old 12-16-13, 11:59 PM
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Old 12-17-13, 02:16 AM
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Question

Originally Posted by Neutron
+1
+ apexi neo can ?
Old 12-18-13, 08:32 PM
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Oh, you know what, I had a problem with a pulsing idle like that for a while. What happened is the power FC was tuned with the AWS valve disconnected. I, like an idiot, reconnected it at one point and had a high reving pulsing idle. Check to make sure your electronics are right
Old 12-21-13, 05:33 AM
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Originally Posted by Whitetiger777
Oh, you know what, I had a problem with a pulsing idle like that for a while. What happened is the power FC was tuned with the AWS valve disconnected. I, like an idiot, reconnected it at one point and had a high reving pulsing idle. Check to make sure your electronics are right
Bro my car not this AWS valve!
Old 12-29-13, 10:16 PM
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The fuel rich is fd3s very normal problem?
Old 01-02-14, 05:24 AM
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That is running very rich. Who tuned it?
Have you opened the sensor check screen in the hand controller and checked that all sensor signals are as they should be? Oxygen sensor wire connected and unbroken? TPS online and adjusted correctly? Coolant sensor OK?
There's a bunch of things that could contribute to this. You'll have to work through the options one by one.

Very colorful car you have there... Silver vacuum chamber tank is pretty groovy man :p

If everything checks out sensor-wise, and its just a poor tune, you need to go back to a dyno and get it tuned properly.

Also, can we get some specs on what has been done to the car- is it stock sequential system, PFC, how many miles on this engine, etc.. Just some more info to try and help you and understand your situation a bit more.
Old 01-02-14, 06:27 AM
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Now use stock ecu all sensor i check is ok . The idling up down up down remove the idling valve also up down up down ! What will cause the idle time is that?
Old 01-02-14, 06:34 AM
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Bro the silver vacuum chamber tank is use the Aluminum cut and glue

Bro the silver vacuum chamber tank is use the Aluminum cut and glue
Originally Posted by SA3R
That is running very rich. Who tuned it?
Have you opened the sensor check screen in the hand controller and checked that all sensor signals are as they should be? Oxygen sensor wire connected and unbroken? TPS online and adjusted correctly? Coolant sensor OK?
There's a bunch of things that could contribute to this. You'll have to work through the options one by one.

Very colorful car you have there... : is pretty groovy man :p

If everything checks out sensor-wise, and its just a poor tune, you need to go back to a dyno and get it tuned properly.

Also, can we get some specs on what has been done to the car- is it stock sequential system, PFC, how many miles on this engine, etc.. Just some more info to try and help you and understand your situation a bit more.
Old 01-02-14, 06:40 AM
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The stock exhaust pipe have a one sensor now i change the exhaust the sensor want install back or not ?
Old 01-03-14, 04:18 AM
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Yes, you need that sensor. That exhaust sensor is the oxygen sensor. Put it back..

You also cant run the sensor check on the stock ECU. You must use the Power FC's Hand Controller to see all the sensors together and see if they are giving you signals or not.

Dont worry about the idle valve for now. Get your exhaust oxygen sensor back in the car and see what happens
Old 01-03-14, 08:59 AM
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Check your clutch switch. A bad clutch switch will cause pulsing idle.
Old 01-04-14, 02:17 AM
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Originally Posted by adam c
Check your clutch switch. A bad clutch switch will cause pulsing idle.
Bro my car is auto replaced to manual not clutch switch!


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