Check Engine came on ...fixed it??
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3rd Gear Member
Joined: Mar 2006
Posts: 555
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Check Engine came on ...fixed it??
After a fill up today my check engine came on so I used my STC tuner to diagnose it and I got this message “PO 175 SYS TOO RICH 2 “
I was running a 93 tune (for over a year now) so I “returned to stock” and ran the 93 tune again and the -check engine- disappeared. Should I be concerned???
I was running a 93 tune (for over a year now) so I “returned to stock” and ran the 93 tune again and the -check engine- disappeared. Should I be concerned???
4th Gear Member
Joined: May 2006
Posts: 1,207
From: Nutley NJ
RE: Check Engine came on ...fixed it??
Might have just tripped the light when you were filling up. When the tank loses airpressure that can happen I think. Did you have the car running while filling up? Just keep an eye on it.
4th Gear Member
Joined: May 2006
Posts: 1,412
From: Norfolk, VA
RE: Check Engine came on ...fixed it??
I had that happen once before to, retightened the gas cap and let the car sit a few and it went away. I once heard that if you didn't tighten the gas cap enough (like 3 or 4 clicks), that the CEL can come on.
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