1900 k1500 350 ses light

[andy]

My ses light has been coming on when my truck gets to operating temp. It runs fine. I went to orieleys last night to get the code for the ses light. It wouldn't connect. Set up the tuner pro and can't find the table for trouble codes so I tried winaldl and it's not showing any codes. Its barely showing any data. Not sure what's up. O2 is around 440mv constantly. Not sure what's up

 

[someotherguy]

Scan tool?!

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And if your O2 isn't flipping fairly rapidly, it's probably bad. Should be constantly going rich/lean

Richard

 

[98_k1500]

This ^^^ lol

 

[andy]

Orieleys has an obd1 scan tool. I also tried the paperclip between pins a and b and got the code 12 but no other codes are displayed. Also, the rpm and mph arnt logging either. I might not have them set up correctly.

 

[cjman250]

code 12 tells you that the computers in diagnostic mode

 

[andy]

I was planning on a 3 wire o2 mod using the Bosch 13077 sensor. It has stock manifolds no cat and dual exhaust so I don't think it's heating the sensor enough. It gets around -40 and below here. What's the best way to wire it? I'll use a relay either way. But with a key on source or a toggle switch? I want to take the stock head unit out and make a toggle witch panel there with 4 or 5 switches.

 

[cjman250]

I was planning on a 3 wire o2 mod using the Bosch 13077 sensor. It has stock manifolds no cat and dual exhaust so I don't think it's heating the sensor enough. It gets around -40 and below here. What's the best way to wire it? I'll use a relay either way. But with a key on source or a toggle switch? I want to take the stock head unit out and make a toggle witch panel there with 4 or 5 switches.

best way would be key on

 

[98_k1500]

May have to check it with it running. If the light is on when you check it, it should show you a code.

 

[andy]

I have done it both key on engine off and with it running.