P0101 and multiple misfire code in incline....
#1
P0101 and multiple misfire code in incline....
OK on my 01 Bravada I normally drive a short distance to work on mostly flat roads with no issues. However when I hit the interstate the truck feels a bit sluggish and when I go up long hills recently have started getting a flashing check engine but no discernable miss, and now a P0101.
Again it feels sluggish but no discernable miss. Any thoughts? I'm struggling to find a situation in the search function that is like mine, but may have missed one.
Again it feels sluggish but no discernable miss. Any thoughts? I'm struggling to find a situation in the search function that is like mine, but may have missed one.
Last edited by ntjoe; 08-18-2017 at 06:11 PM.
#5
What do your fuel trims look like?
Have you done a fuel pressure leak down test?
Since you suspect a plugged cat you might consider a back pressure gauge test.
George
Have you done a fuel pressure leak down test?
Since you suspect a plugged cat you might consider a back pressure gauge test.
George
Last edited by GeorgeLG; 08-19-2017 at 11:56 AM.
#6
So a lot happened after this post and I am just realizing I never got back to it. I wanted to provide a conclusion. Shortly after this I got hit with tones of OT at work and had no time to do any of the suggestions, so I took it to a local shop that the family trusts. After some work they determined it was, in fact the cat's. The precat was 75% blocked and the main cat was even worse. So much so, that the flowmaster 40 series on it was quiet until the cats came off, and then it was MUCH louder to say the least.
Since KY doesn't do emissions testing, we installed a straight pipe in the place of the cat, and I had a turbo muffler installed like a resonator in front of the flowmaster and the sound is great now - good rumble but nothing deafening.
To avoid the resultant O2 sensor code which occurred with no cat, I purchased an O2 sensor 90 degree extender and spacer from Amazon for $10. This pulled the sensor out of the main flow of exhaust and it works great - no code since it was installed.
Now on the interstate I have great power and no more p0101 codes on inclines.
Sorry for the LONG delay in replying.
Since KY doesn't do emissions testing, we installed a straight pipe in the place of the cat, and I had a turbo muffler installed like a resonator in front of the flowmaster and the sound is great now - good rumble but nothing deafening.
To avoid the resultant O2 sensor code which occurred with no cat, I purchased an O2 sensor 90 degree extender and spacer from Amazon for $10. This pulled the sensor out of the main flow of exhaust and it works great - no code since it was installed.
Now on the interstate I have great power and no more p0101 codes on inclines.
Sorry for the LONG delay in replying.
Thread
Thread Starter
Forum
Replies
Last Post
ZQ8 Blazer
Engine & Transmission
12
02-21-2015 10:21 AM
Doug W
2nd Generation S-series (1995-2005) Tech
2
11-24-2010 01:13 PM
mdkuni
2nd Generation S-series (1995-2005) Tech
4
10-07-2008 10:01 AM
hostile
2nd Generation S-series (1995-2005) Tech
7
02-19-2008 02:54 PM