Check Engine keeps coming on

kgo40 · Post by **kgo40** » Sat May 16, 2009 8:51 pm

My check engine light comes on about 250 miles after I install
the perfomance tune. If I put the stock tune back in, the light
is gone. Then I put the performance tune back in and the light
is gone for about 250 miles. Would welcome suggestions;

Thanks, vette,2007 ZO6 u7194 u7194-9r07

pheonix311 · Post by **pheonix311** » Sun May 17, 2009 9:32 am

have you checked to see what the actual code is?

if so, whats the code thats causing the CEL?

Post by **06MonteSS** » Sun May 17, 2009 10:01 am

yeah, what's the trouble code or codes it's throwing??? use the predator to scan for 'em and let us know what they are...

kgo40 · Post by **kgo40** » Sun May 17, 2009 2:13 pm

[quote="06MonteSS"]yeah, what

How do I do that? I'm not real familiar on how to use the Predator except for installing tunes,

Thanks,Kevin

pheonix311 · Post by **pheonix311** » Sun May 17, 2009 10:36 pm

at the first menu where it should have menus for tuning, diagnostics, and options go to diagnostics. in there you will have an option scan codes or scan DTC something like that. do it and tell us the codes

Post by **06MonteSS** » Mon May 18, 2009 8:37 am

diagnostics > check codes, or show codes, or display codes... again, something like that...

kgo40 · Post by **kgo40** » Mon May 18, 2009 7:35 pm

can the engine be running or do I have to do it like installing a tune?
Thanks

Post by **06MonteSS** » Mon May 18, 2009 10:36 pm

do it like installing a tune...

kgo40 · Post by **kgo40** » Mon May 18, 2009 11:32 pm

will do-if it stops raining,thanks

kgo40 · Post by **kgo40** » Thu May 21, 2009 10:44 pm

I finally got the trouble codes,PO442,PO650,and PO654 whats the next step?
Thanks, Kevin

CANUCKPREDATOR · Post by **CANUCKPREDATOR** » Fri May 22, 2009 12:36 am

P0442 Evap Emission Ctrl Sys Leak Detected (smallleak)
P0650 Error Indicator Lamp (MIL) Ctrl Circ Error
P0654 Eng RPM Output Circ Error

That's what the codes are, what that means I don't know, I ain't no mechanic.

pheonix311 · Post by **pheonix311** » Fri May 22, 2009 12:51 am

P0442 i think is a vacuum leak but im not certain

P0650 im not sure but sounds like an error on the actual PCM

P0654 sounds like a tach gauge error

kgo40 · Post by **kgo40** » Fri May 22, 2009 1:11 am

Should I clear the codes and see what happens?

Post by **mikel** » Fri May 22, 2009 9:07 am

Yeah, clear them for now.
I also wonder if you have driven the stock tune long enough to set these codes, since I see no reason they would be related to the tune.

When you restore the backup, it clears all codes, and resets the OBDII drive cycles, so it may take a while to set these same codes after flashing back to stock.

kgo40 · Post by **kgo40** » Sat May 23, 2009 4:22 pm

I cleared the codes, the light is off and its running great. I"ll see what happens next.

Thanks for all the help, Kevin

Check Engine keeps coming on

Check Engine keeps coming on

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RE: Check Engine keeps coming on