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-   -   Stalls At Start Up W/ Pfc (https://www.nopistons.com/ecu-discussions-23/stalls-start-up-w-pfc-17653/)

tfhuth 05-21-2003 02:10 PM

OK PFC gurus, heres a good one!



Car starts fine, fires right up. Runs for like 2 seconds at 2100 rpm upon start up. Then it just dies. I know it's going to die after a couple seconds so I can keep the idle up by pressing on the accelorator. After about 10 seconds of keeping the idle up in this fashion she idles nice around 1400 rpm untill warm. Then drops to about 730 rpm. Idles nice around 730 rpm all day long.



Seems like there is a gap in between start up and and cold idle.



Any help would be greatly appreciated.



Thanks, Tom

tfhuth 05-22-2003 07:20 AM

Come on guys ! No ones been here before?



Tom

j9fd3s 05-22-2003 11:58 AM

thats a toughie. you might want to reset the base idle speed to the facotry spec as a start



mike

tfhuth 05-22-2003 02:30 PM

Hey Mike,



Thank you for your response!



You mean go back to the PFC base settings?

I have not changed them.



I really don't get this. It must have something to do with cold idle. Like I said, if I keep the rpm's up by pressing on the gas for like 7-10 seconds it idles nice around 1400 until it warms up. Then she idles at 720-730. Also, if I start the car warm it starts fine and idles fine, no stalling https://www.nopistons.com/forums/pub...IR#>/wacko.png



Any other ideas??





Thanks again, Tom

JimmyJimboJet 05-22-2003 07:24 PM

did you let the ecu learn the idle?



when you go into the 'etc' menu, then to the switch/sensor screen, what switchs are lit up?

j9fd3s 05-22-2003 11:36 PM


Originally Posted by tfhuth' date='May 22 2003, 11:30 AM
Hey Mike,



Thank you for your response!



You mean go back to the PFC base settings?

I have not changed them.



I really don't get this. It must have something to do with cold idle. Like I said, if I keep the rpm's up by pressing on the gas for like 7-10 seconds it idles nice around 1400 until it warms up. Then she idles at 720-730. Also, if I start the car warm it starts fine and idles fine, no stalling https://www.nopistons.com/forums/pub...IR#>/wacko.png



Any other ideas??





Thanks again, Tom

i was actually thinking about the base idle screw in the tb.



mike

tfhuth 05-23-2003 07:41 AM


Originally Posted by JimmyJimboJet' date='May 22 2003, 07:24 PM
did you let the ecu learn the idle?



when you go into the 'etc' menu, then to the switch/sensor screen, what switchs are lit up?

Hi thanks for the input.



Yes I let it learn for 10 mins at no load

10 mins w/ lights on

10 mins w/ air on



I just checked the switches: I have the following lit. CAT, ELD, HWL, PAC, and CCN



Does that sound right?



Thanks, Tom

tfhuth 05-23-2003 07:42 AM

Hi Mike,



I have not adjusted the idle screw. Think it could still be a problem?



Thanks again, Tom

j9fd3s 05-23-2003 01:23 PM


Originally Posted by tfhuth' date='May 23 2003, 04:42 AM
Hi Mike,



I have not adjusted the idle screw. Think it could still be a problem?



Thanks again, Tom

possible, if its not out enough it might confuse the ecu?



mike

tfhuth 05-27-2003 07:33 AM

Still looking for more input.



Tom


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