Performance issue...any thoughts
Thread Starter
Race Director
Joined: Apr 2006
Posts: 11,363
Likes: 1
From: Virginia Beach VA
St. Jude Donor '08-'09
Performance issue...any thoughts
Been having a few issues with the vert over the past three weeks and been trying to diagnose the problem without going to the dealer. Here are some detials I have been sending some friends
5-30-11
It seems to be a little tired over the past two weeks. It seems to have lost some (well a lot) of it's umpf. It does not have the throw you back power that it used to have. No, it is not me just used to the car, the other morning leaving work after a rainy night, I mashed the go fast pedal and on a wet road it would not break the tires loose.
Besides a lack of power it still seems to run OK, and it has not thrown any codes. The only thing I have noticed is that my gas mileage has gotten a little worse.
On the drive into work tonight I tried to put it through the paces once I was on the interstate and at a normal throttle it runs ok, but at WOT it gets a little wonky. From a standing start at a stoplight, my 0 - 60 was almost 10 seconds.
5-31-11
I got a Check Engine light tonight, and pulled the codes with my code scanner...
P0101 "Mass or Volume Air Flow Range/Performance Problem"
P0102 "Mass or Volume Air Flow Circuit Low Imput"
sooo...I am thinking maybe my MAF Sensor...yes, no?
I just cleaned out my filter and cleaned out the Varamam imput ducts so I know they are not clogged.
I reset the codes to see if they pop up again on my drive home tomorrow.
6-13-11
I got a new code yesterday when I was driving home and I hit clear instead of save...ugh.
It was doing something different on the way home from work yesterday. I could press on the accellorator a little, halfway, or 3/4 and the car would maintain a steady speed, then after a few seconds, something would kick in, and it was like someone gave the car a shot of NOS. Even at 70mph, it would throw me back in the seat.
6-15-11
Here are the codes I pulled off the car today...
P0131 - O2 sensor circuit low voltage (Bank 1 Sensor 1)
P0151 - O2 sensor circuit low voltave (Bank 2 Sensor 1)
P0101 - Mass or volume air flow circuit range/performance problem
P1133 - HO2S1 Insufficient switches (Bank 1 Sensor 1)
P1153 - HO2S1 Insufficient switches (Bank 2 Sendor 1)
Plugs and wires are less then a year old, filter is clean, had my father hold his hand in front of the exhaust at idle and rev to check for flow...
Any thoughts?
5-30-11
It seems to be a little tired over the past two weeks. It seems to have lost some (well a lot) of it's umpf. It does not have the throw you back power that it used to have. No, it is not me just used to the car, the other morning leaving work after a rainy night, I mashed the go fast pedal and on a wet road it would not break the tires loose.
Besides a lack of power it still seems to run OK, and it has not thrown any codes. The only thing I have noticed is that my gas mileage has gotten a little worse.
On the drive into work tonight I tried to put it through the paces once I was on the interstate and at a normal throttle it runs ok, but at WOT it gets a little wonky. From a standing start at a stoplight, my 0 - 60 was almost 10 seconds.
5-31-11
I got a Check Engine light tonight, and pulled the codes with my code scanner...
P0101 "Mass or Volume Air Flow Range/Performance Problem"
P0102 "Mass or Volume Air Flow Circuit Low Imput"
sooo...I am thinking maybe my MAF Sensor...yes, no?
I just cleaned out my filter and cleaned out the Varamam imput ducts so I know they are not clogged.
I reset the codes to see if they pop up again on my drive home tomorrow.
6-13-11
I got a new code yesterday when I was driving home and I hit clear instead of save...ugh.
It was doing something different on the way home from work yesterday. I could press on the accellorator a little, halfway, or 3/4 and the car would maintain a steady speed, then after a few seconds, something would kick in, and it was like someone gave the car a shot of NOS. Even at 70mph, it would throw me back in the seat.
6-15-11
Here are the codes I pulled off the car today...
P0131 - O2 sensor circuit low voltage (Bank 1 Sensor 1)
P0151 - O2 sensor circuit low voltave (Bank 2 Sensor 1)
P0101 - Mass or volume air flow circuit range/performance problem
P1133 - HO2S1 Insufficient switches (Bank 1 Sensor 1)
P1153 - HO2S1 Insufficient switches (Bank 2 Sendor 1)
Plugs and wires are less then a year old, filter is clean, had my father hold his hand in front of the exhaust at idle and rev to check for flow...
Any thoughts?
Race Director
Joined: Oct 2004
Posts: 13,539
Likes: 1,339
From: Home of the VOLS ! Knoxville, TN. Tennessee
St. Jude Donor '11-'12-'13, '15, '16-'17-'18-'19
the symptoms describe an issue with your Cats being clogged. I would have that and the O2 sensors checked first.
Either issue could give you a lot of grief and effect your gas mileage.
Either issue could give you a lot of grief and effect your gas mileage.
