misfire
Thread Starter
Heel & Toe
Joined: Sep 2011
Posts: 22
Likes: 0
From: lockport il
misfire
my 99 c5 has been running like crap. obd codes were p0101, bad maf, plugs completly fouled gas in oil. changed plugs wires maf sensor twice fuel filter/ pressure reg. still missing bad, dual exhaust with h crossover, left side blows hot right side blows cold. HELP.
Tech Contributor
Joined: Jan 2007
Posts: 19,353
Likes: 1,125
From: Dyer, IN
This started all of a sudden? No recent work done?
Thread Starter
Heel & Toe
Joined: Sep 2011
Posts: 22
Likes: 0
From: lockport il
no work done lately. started all of a sudden was stuck out had to have a shop change plugs aalso had oil changed cuz it smelled like gas, drove home twenty min plugs foulded again changed them second time and new wires juasst in case. shop said code showed bad air mass sensor drove home and changed that also still pulling p0101, also shop said many many misfires but they cleared so i dont know which bank or cly
Tech Contributor
Joined: Jan 2007
Posts: 19,353
Likes: 1,125
From: Dyer, IN
no work done lately. started all of a sudden was stuck out had to have a shop change plugs aalso had oil changed cuz it smelled like gas, drove home twenty min plugs foulded again changed them second time and new wires juasst in case. shop said code showed bad air mass sensor drove home and changed that also still pulling p0101, also shop said many many misfires but they cleared so i dont know which bank or cly
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
Thread Starter
Heel & Toe
Joined: Sep 2011
Posts: 22
Likes: 0
From: lockport il
I have not had any work done at all except for oil changes at apple chevy in orland park. I was driving at 55 mph when the car started losing power, the check engine light began flashing. I pulled over and the light came on constant. Limped the car to NTB where they scaned for codes, i was told the code for maf out of range and also cylinder misfires in the thousands, unfortunatly no specific bank or cylinder. I was told and shown the plugs were fouled, not being able to drive home i had them replace the plugs. The mechanic said i would be able to drive home with the bad maf sensor so i could replace it myself. Went home and replaced the sensor, started the car and it still was misfiring badly. Checked the plugs, they were fouled again. Replaced the plugs again and new wires. Obd scan showed same code again P0101, returned maf sensor for a new one started car and P0101 returned. checked resistance on injectors, all showed 12 ohms. Like i said earlier, drivers side of dual exhaust blows hot while passenger side blows cold, getting blue spark from all coil packs. I also replaced the fuel filter/ fuel regulator
Burning Brakes
Joined: Mar 2008
Posts: 983
Likes: 36
From: Middle Of Kali CA
Thread Starter
Heel & Toe
Joined: Sep 2011
Posts: 22
Likes: 0
From: lockport il
At the tail pipe, there is an h crossover. I mean the air blowing out of the tail pipes is hot on left muffler and cold on right muffler
Last edited by jacksbadvert; Sep 27, 2011 at 11:42 PM.
Tech Contributor
Joined: Aug 2008
Posts: 2,902
Likes: 21
From: Oak Hill Virginia
Is it blowing cold air or is it sucking air in on the right? Take a piece of paper and hold it up to the pipes on that side, what you don't want to see is the piece of paper flapping back and forth against the pipe. It should just blow the paper away from it...
Le Mans Master
Joined: Jul 2010
Posts: 5,986
Likes: 719
Le Mans Master
Joined: Nov 2005
Posts: 6,993
Likes: 25
Catalyst Efficiency code should have been set if it was clogged.
Last edited by dougbfresh; Sep 28, 2011 at 01:35 PM.