Cobalt recently I turned on the check engine code 2187..451..496. anyone can tell me is this code..thanks

 

P2187-too lean at idle........451...496? If u mean P0451 and P0456 then it's an emissions code for the evap purge and fuel tank pressure. What did you recently do to your car?

 

TRIFECTA TUNE..(RLCTE MAF)..AND NEW ZZP INTERCOOLER..and you ok.is 2187..0451..0496...the car will not start to fill gasoline ...i push full pedal to start..

 

If I understand you, you have a Trifecta tune, ZZP MAF relocate to lower charge pipe and intercooler?

If so, you need to datalog the tune with trifecta and have the idle richened up. My MAF relocate in the ZZP pipe requires over +20% fuel at idle because of the position of the MAF sensor in the charge pipe. At idle it sees very little flow so the ECU has to add more fuel to make up for it.

I'd raise the idle to 900 rpm also, it helps the problem.

Also, make sure you don't have an air leak at the sensor or throttle body. There should be a thin gasket piece on the base of the MAF sensor where it sits.

 

thanks bro..i need call vince..

 

Or put the factory pipe back on try it out. If it stops then u know what's up. If not it's other problems

 

considering you have two EVAP codes. 451 and 496, my bet is on the evap vent valve or purge selenoid.

I'm getting 455, 496 and 497 right now and trying to decide if i want to take it in.

 

It's hard to guess over the interwebz, but I know what my ZZP MAF relocate did to the trims at idle. That's why I posted the fuel trim info. If it started right after he put the cp on, it's still my bet. Interested in the results. We still don't know the OP's exact mods.

It could be the purge solenoid stuck open or another vacuum leak like if he left a line off for the boost pressure sense line from the lower cp.

 

i have the same exact codes on my ss tc! im trifecta tuned but my bov is on the upper charge pipe and i have a factory lower charge pipe. i also have a dejon intake and a hahn bop. how should i go about tryna fix this?
p2187
P0456
P2187

 

anybody?

 

Dino, it needs a log and tune adjustment. Just as I am broke said, the idle needs to be richened up a bit. It's not a huge problem.

 

ok thanks alot. im gona try to get a hold of the original tuner of the car

 

I just had the same problem...car had the 2187 code...took it to vince and he richened it up at idle now it runs like a raped ape again...I also have a BOV and MAF relocate to the lower CP

 

The closest dealer to me is in hartford ct. can i just go to him and ask him to fix it? or should i contact vince?

 

Do not take it to the dealer...vince will fix it for free don't worry as they all said its an easy.fix just need to tweak the tune a little

 

i spoke with the dealer today. krs performance in hartford ct much closer to me) they wana charge me 60 to adjust tune. how do i ask vince to fix it if im in massachusetts?

 

Dino,
If you don't know who it was originally tuned by then any new tuner may charge you a fee. Which is lame. Ask around the regional section on here, you may be able to find someone with a trifecta cable that can log it and send it to vince. Its really only a few minutes of their time.

 

Do exactly what ryan said