speddmn Posted November 13, 2008 Share Posted November 13, 2008 Just got an AP installed monday night, yesterday while going home from work the car just died at a stop light??? Its just got an AP and intake silencer removed (stg1 tune). It started right back up and made no funny noise but is this to be expected in the coming cold months? it was about 25% warm according to the moron-o-meter... Link to comment Share on other sites More sharing options...
Ridgeracer Posted November 13, 2008 Share Posted November 13, 2008 Depends...You might have a vacuum leak now after the AP install. How is your idle.?? "Gimme mines Balboa...Gimme mines".....Clubber Lang - Mr. T Link to comment Share on other sites More sharing options...
speddmn Posted November 13, 2008 Author Share Posted November 13, 2008 Idle's fine, its always been ever so slightly rough... and I mean barely Link to comment Share on other sites More sharing options...
PhilT Posted November 13, 2008 Share Posted November 13, 2008 Try cleaning your MAF sensor and then reset the ECU again. When you flashed the new map with the AP, the ECU lost everything it had learnt, which includes any compensation for a dirty MAF sensor. Don't ask me how I know this Double Award Winning Legacy GT Wagon Link to comment Share on other sites More sharing options...
Infamous1 Posted November 13, 2008 Share Posted November 13, 2008 How many miles were on the car since the flash? The ECU must relearn the throttle settings. I usually idle for about 2-3 mins without touching the throttle after a base map flash. Once this is done I turn car off then back on and then go. Link to comment Share on other sites More sharing options...
Spec B Posted November 13, 2008 Share Posted November 13, 2008 ^^ What he said. Even after following that procedure, the idle dips a bit for me when I first drive the car after a flash, after 10 minutes it is usually all good. Link to comment Share on other sites More sharing options...
mickeyd2005 Posted November 13, 2008 Share Posted November 13, 2008 After a flash, I just start driving. There's no difference. I allow the car to idle for only a few seconds but that is only to allow the front O2 sensor to warm up. If you log CL/OL status, it will be 7 during warm up. When it changes to 8, the car is ready to go. It has nothing to do with a flash. What's it going to learn? The IAM doesn't affect low load driving (such as idle). AVCS takes some time to calibrate but it doesn't really affect low load driving. The only thing that changes is AFR Learning A. If you have a good MAF scale, then you should be good to go. I don't know of any throttle settings that have to be learned. There might be some TCU stuff but OP didn't say if he had a 5EAT or 5MT. Link to comment Share on other sites More sharing options...
Bolksey85 Posted November 13, 2008 Share Posted November 13, 2008 Was the car up to temp when it died or was it still cold? One of my old vehicles died in cold weather just randomly, then started back up and ran like a top after that. Just a weird fluke. Link to comment Share on other sites More sharing options...
Infamous1 Posted November 13, 2008 Share Posted November 13, 2008 After a flash, I just start driving. There's no difference. I allow the car to idle for only a few seconds but that is only to allow the front O2 sensor to warm up. If you log CL/OL status, it will be 7 during warm up. When it changes to 8, the car is ready to go. It has nothing to do with a flash. What's it going to learn? The IAM doesn't affect low load driving (such as idle). AVCS takes some time to calibrate but it doesn't really affect low load driving. The only thing that changes is AFR Learning A. If you have a good MAF scale, then you should be good to go. I don't know of any throttle settings that have to be learned. There might be some TCU stuff but OP didn't say if he had a 5EAT or 5MT. It is throttle by wire, you can't just flash the car and expect the ECU to know where to set the throttle position to idle. The TPS has to learn. Cold or warm engine, it will have a shakey idle or possibly stall. With TGV deletes it gets even worst, as well with colder temps. I have experienced this with multiple cars so it is not limited to just mine. Link to comment Share on other sites More sharing options...
mickeyd2005 Posted November 14, 2008 Share Posted November 14, 2008 It is throttle by wire, you can't just flash the car and expect the ECU to know where to set the throttle position to idle. The TPS has to learn. Cold or warm engine, it will have a shakey idle or possibly stall. With TGV deletes it gets even worst, as well with colder temps. I have experienced this with multiple cars so it is not limited to just mine. It is a feedback system. I don't believe there is any calibration involved. I can attest from personal experience that mine works right after a flash. You can test it for yourself. Flash the car and then log accelerator peddle and throttle position. You can relate the two using the TPS table. The cold temperature starts and TGVs have nothing to do with this discussion since we are talking about the changes right a reflash. Link to comment Share on other sites More sharing options...
Infamous1 Posted November 14, 2008 Share Posted November 14, 2008 It is a feedback system. I don't believe there is any calibration involved. I can attest from personal experience that mine works right after a flash. You can test it for yourself. Flash the car and then log accelerator peddle and throttle position. You can relate the two using the TPS table. The cold temperature starts and TGVs have nothing to do with this discussion since we are talking about the changes right a reflash. I was actually going to do so, I was searching for like the last 45 mins trying to find where I read it. But it make sense as there is no idle key. Also if you play with the throttle plate, you can feel the feedback difference from a cable plate. As far as cold starts, it relates in my mind as the stumble is even more edvident as with the TGV's. Remeber I am in SoCal it only gets so cold, 45-50 at worst Link to comment Share on other sites More sharing options...
speddmn Posted November 14, 2008 Author Share Posted November 14, 2008 for the record we're talking 2 days after flash Link to comment Share on other sites More sharing options...
speddmn Posted November 14, 2008 Author Share Posted November 14, 2008 ok so i'm going to clean the MAF and check my vac lines under the IC this weekend, does anyone have any other advice considering the fact that the tune had been on for 2 days? Link to comment Share on other sites More sharing options...
Infamous1 Posted November 14, 2008 Share Posted November 14, 2008 How many miles were on the car since the flash? Link to comment Share on other sites More sharing options...
speddmn Posted November 15, 2008 Author Share Posted November 15, 2008 probably 100 by now, it was monday, i drive 20 mi to/from work every day + change for lunch, errands etc Link to comment Share on other sites More sharing options...
peteyjr Posted November 15, 2008 Share Posted November 15, 2008 Same thing happened to me when I initialized the AP but I did a bonehead maneouver and forget to remove the initializing connector. Even when I disconnected it it ran rough for a day. Eventually it smoothed out and now runs like a charm. Link to comment Share on other sites More sharing options...
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