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Idle issues!!

Old 04-19-2018, 04:21 AM
  #41  
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busy week haven't gotten on in awhile, You know the only thing I could think is if it somehow sent a surge through the system. But you did buy the car with the issue, you put a lot of trust in the seller to tell you the truth on whether it was a new or old problem.
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Old 04-19-2018, 08:40 AM
  #42  
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I would like the info for the ECM repair guy you spoke of. He is able to make sure All outputs are functioning? Iíve seen several places that just do a reflash and send it out. Last night I changed the upper and lower intake gaskets, injector o-rings and throttle body gaskets....No change, tiny vacuum leak is gone but idle still surges and it still will not do a Idle air relearn with the NDIII software. I do have a faulty oil pressure sensor thatís reading pegged but I couldnít see that being an issue. I have the new one and will change it this eve. Really getting frustrated with this car! I went with the previous owner to buy this car new and have done all the maintenance on it since it fell out of warranty so I know the history of the car. I actually drove it 3 weeks before the battery went dead and this all started..
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Old 04-20-2018, 09:54 AM
  #43  
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Yea my mechanic uses him, apparently he can actually pull ecms' apart and replece pieces on them to get them functioning. I completely understand your frustratiuon, when I had the idle issue it drove me insane for about a month. I'll get the number and post it up when I get home from work today.
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Old 04-24-2018, 12:26 PM
  #44  
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I meant to get this to you earlier, but I had to get the number from my mechanic again. His name is Joshua and his number is 720-538-6184. He's based in Arveda CO.
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Old 04-30-2018, 02:23 PM
  #45  
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Default Update, new data.







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Old 04-30-2018, 02:25 PM
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Those were all key on engine off. When I change the a/f correction value to 75-80% the engine stops surging and idles, rough but no surge. Looks like O2 sensors and a Maf are in my future?
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Old 05-10-2018, 12:47 PM
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Did the 02 sensors and maf do it?
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Old 05-10-2018, 01:33 PM
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I just replaced the O2 sensors last night, MAF made no change but O2 data is now reading correct. Although it starts the Idle air relearn it will not complete it even after 20 min. This morn I attempted to drive the car to work as I have been and only made it a mile before the pedal went dead. After a short rest I restarted it and took off only to go 100í and dead pedal, at that point I idled it home parked it and drive my truck to work. Also after changing my oil pressure sender now instead of the gauge pegged I get zero pressure and an oil light except this morn I noticed the light went off for a brief moment then the gouge read low pressure and went dead again with the light on. This happened 2 minutes before the dead pedal.
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Old 05-10-2018, 01:35 PM
  #49  
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I did get a P0507 idle control system code which has never appeared before
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Old 05-14-2018, 07:24 AM
  #50  
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Hmm I do know with that code it's supposed to go into limp mode. But a dead pedal? Maybe a dumb question but any chance you have an oil leak too? To be honest you are beyond my experience with the Z. We probably need a few of the older members to jump in here. I hope you get it figured out, and keep us posted.
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Old 05-14-2018, 07:28 AM
  #51  
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no oil leak, it definitely has oil pressure but their must be a connection issue unless the new sender I got is faulty. Itís definitely in limp mode, had to limp all the way home lol!!
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Old 11-12-2018, 01:14 AM
  #52  
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Originally Posted by Trades2much View Post
no oil leak, it definitely has oil pressure but their must be a connection issue unless the new sender I got is faulty. Itís definitely in limp mode, had to limp all the way home lol!!
check out oil pump, it can cause idle issues. Could of shorted out a wire to your ecu from a bad ground, motor wire hardnesse's. First i replaced fuel injector hardness, and motor wire harndness and I sent my ecu to to get repaired and then I installed it my self and then it was idling perfect
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Old 11-12-2018, 01:37 AM
  #53  
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Where did you send your Ecu? I just got it back from a shop that had it 5 weeks and couldnít figure it out... They didnít charge me a dime but I have them a couple hundred just for the effort. Besides, it made me feel a little better about not figuring it out either...
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Old 11-12-2018, 01:38 AM
  #54  
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I did send the ecu in to have it reflashed but they gave it back and said it had the latest update and couldnít reflash it??
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