I just bought my wife a 99 Trans Am ,Getting Codes,HP Tuners says P1416 Secondary Air Injection (AIR)System Bank 2 and P1637 Generator L-Terminal circuit. How do I fix these and are they any thing to worry about?
Thanks For the Help....

 

P1416 is nothing big...easiest way to "fix" it is remove the AIR system from the car, and turn the codes for it off.

P1637 though is the alternator...possibly some damage to it's wiring, or possibly something wrong with the alternator, or it could be the wrong alternator for the car.

 

Thanks Mike,This car has some kind of black box hooked up to the TB going to the Alternator?I haven't a clue as to what it is....

 

Sounds like something aftermarket...I'd look into removing it and then seeing if the P1637 stays off when you clear it (but keep it enabled).

 

God Damit!!! I'm just threw this code and my alternator I guess is the culprit!

 

Check the exciter (red) wire/connection at the alternator. Also check the voltage at the battery with the car off and running.

 

... Does that wire have a habit of comming loose?

 

BTW, how much is the wire?

 

I found this on ebay the other day.

http://cgi.ebay.com/ebaymotors/ws/eB...K%3AMEWAX%3AIT

 

Cool. That actually helps. Thanks!

 

BTW,.. Just a bit more info on my issue. (P1637 code) ... Battery has a charge. All the lights for the gauge cluster still light up, alarm works & headlamps raise and lower at normal speed. .... I can't hear the starter 'click' when I turn the key. .... Starter Fuse isn't blown... SHE JUST WON'T START!

 

Update: ... Removed the alternator and battery today. Took them to Autozone for testing. Both in good shape. Went down to the dealer, bought an exciter wire ($54.40!!!) and cut and spliced it in.... CAR STILL WON'T START!!! ... Still throwing the same damn code too (P1637) ... God Damit!!!!

 

Anyone?!! ... I need help so if anyone can throw their .02 cents in I'd greatly appreciate it.

 

The Duratester at AutoZone will not test the L Circuit wire if I understand how the L Circuit works correctly. I would advise you to buy the AutoZone alternator put it in, see if it works and if the code comes back simply pull the alternator clean it and return it. As far as it seems that shouldn't keep it from starting?

http://www.gearchatter.com/viewpost14190.php

 

If your battery has a full charge, the alternator code will have nothing to do with it not starting.