99 996 idle surge and crazy pumping gass pedel to start

[Tony Patz]

 The car starts intermittently with no problem. But sometimes I have the pump the gas pedal quickly about 10 times to get it to start. I clean the MAF and it seemed to run good for a while but then the issue came back. It always starts and runs great at driving speeds. 

 

 Codes are:

 

P1124

P1397 wheel speed sensor "B"/G – Sensor circuit low input

 P0410 secondary air system performance

 P1411

P0446 the evaporative emission system that control circuit

 P1126

P0102 MAF sensor circuit low frequency

 

 in that order,  this was done at AutoZone today. Y

[Ahsai]

These are not easy to deal with codes. I suggest at least get a scanner first if you want to troubleshoot these yourself. Also expect quite involved processes sine these involve the SAI system, the evap system, and the MAF.

[Ahsai]

P1124 is bank 1 running lean

P1126 is bank 2 runnng lean

P1397 is bank 2 cam sensor

P0140/1411 SAI not operating properly

P0446 evap sutoff valve

P0102 MAF

Loos like you have some vacuum leak, which can also affect the SAI operation. Can you hear the SAI pump runnng the first minute of cold start?

[DBJoe996]

I agree with Ahsai.  You need to start with checking for a vacuum leak, particularly on the intake side of things.  Too much air getting sucked in will throw off the MAF and cause lean running.  Also, having cleaned the MAF many times, I finally replaced it with a new Bosch MAF and that took care of that.  Very carefully inspect your oil filler pipe as they are prone to cracking and that will cause a vacuum leak.  Might just replace that as well.  By process of elimination given that many various codes you will have to go step by step.  Also, buy your own OBDII reader.  They are cheap and valuable.  Better yet, get Durametric for troubleshooting.