'17 LS struggling on mountain roads

[PA-WOODCHUCK]

If you google P2227 and P2228 are related to the barometric pressure sensor. That said maybe best to have a knowledgeable shop monitor data from the barometric pressure sensor. The sensor can adjust air/fuel ratio as needed. Just don't start throwing parts at it which may cost more than have a pro diag it.

 

[Doubeleive]

If you google P2227 and P2228 are related to the barometric pressure sensor. That said maybe best to have a knowledgeable shop monitor data from the barometric pressure sensor. The sensor can adjust air/fuel ratio as needed. Just don't start throwing parts at it which may cost more than have a pro diag it.

ya that's the tricky part, the map sensor is not much around $20, a maf sensor is around $70 depending on the year, a diagnosis is probably $180
you CAN end up paying the diag to find out it was a $20 part
on the other hand you could go out and buy the part and still not correct the issue and end up having to pay the diagnostic anyway...
my thoughts are replace the map sensor anyway at 100k it's time, I did mine around 85k

 

[GranPrix]

ya that's the tricky part, the map sensor is not much around $20, a maf sensor is around $70 depending on the year, a diagnosis is probably $180
you CAN end up paying the diag to find out it was a $20 part
on the other hand you could go out and buy the part and still not correct the issue and end up having to pay the diagnostic anyway...
my thoughts are replace the map sensor anyway at 100k it's time, I did mine around 85k

If I remember correctly it’s right next to the TB right?

 

[Doubeleive]

If I remember correctly it’s right next to the TB right?

the map sensor is on the intake under the beauty cover, really can't miss it

 

[GranPrix]

Another thing I realized I’ve recently noticed a slight shudder when coming to a stop

 

[GranPrix]

So I got some MAP readings and it seems they’re ok. It reads @30 and sits consistently at 10. The spikes are hard accelerations.

 

[GranPrix]

Barometric consistently at 30

 

[GranPrix]

I’m not sure where the MAF numbers should be at

 

[Fless]

The fuel pressure numbers are all over the board.

 

[OR VietVet]

The fuel pressure numbers are all over the board.

Yea, good catch, even when not accelerating that pressure is way high, if I am reading it right.