Check engine codes 0174 / 0171
Thread Starter
Burning Brakes
Joined: Oct 2011
Posts: 956
Likes: 36
From: Norwalk CT
Check engine codes 0174 / 0171
My check engine light came on today and gave me 0174 / 0171 ..
I think thats a fuel lean cond?
I have a V-ram and viper tune , LT headers , high flow cats ,, all was on car when I bought it back in Sept have had no problems .. Guy I bought it from told me that the light had been coming on after the tune and he had to go back and have it tweaked in order to get the Check engine light to go off..
I have had the car at two track days runs great know just driving around town the light started to come on .. I cleared the codes three times and know it has been off for a good 15 min and has not come back on yet ..
I checked all vac lines and intake clamps , cleaned MAF sensor ..
I think thats a fuel lean cond?
I have a V-ram and viper tune , LT headers , high flow cats ,, all was on car when I bought it back in Sept have had no problems .. Guy I bought it from told me that the light had been coming on after the tune and he had to go back and have it tweaked in order to get the Check engine light to go off..
I have had the car at two track days runs great know just driving around town the light started to come on .. I cleared the codes three times and know it has been off for a good 15 min and has not come back on yet ..
I checked all vac lines and intake clamps , cleaned MAF sensor ..
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
Sounds as though you need to cave in and get a real tuner to get your engine running correctly.
I bet your MAF calibration is way off! Look at your Long Term Fuel Trim Values.. If they’re very high,,,,,, you will need a tuner to correct.
I don’t know what a VIPER has the ability to adjust but, the key things to make the engine run correctly/ Correct closed loop AFR and PE AFR probably isn’t included.. You need a Wide Band O2 sensor to figure that out.
BC
I bet your MAF calibration is way off! Look at your Long Term Fuel Trim Values.. If they’re very high,,,,,, you will need a tuner to correct.
I don’t know what a VIPER has the ability to adjust but, the key things to make the engine run correctly/ Correct closed loop AFR and PE AFR probably isn’t included.. You need a Wide Band O2 sensor to figure that out.
BC
Tech Contributor
Joined: Aug 2008
Posts: 2,902
Likes: 21
From: Oak Hill Virginia
ECS will do a mail-order tune pretty cheap and lots of people have had good success with that but you really can't beat a full dyno tune by a competent tuner to get the most out of your car.
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Well, sounds like you already know what the problem is then. As Bill already said; if you don't have any unmetered air issues then it's almost definitely in the tune.
ECS will do a mail-order tune pretty cheap and lots of people have had good success with that but you really can't beat a full dyno tune by a competent tuner to get the most out of your car.
ECS will do a mail-order tune pretty cheap and lots of people have had good success with that but you really can't beat a full dyno tune by a competent tuner to get the most out of your car.
OP, here is a link to our mail order tuning special and web site.
http://www.eastcoastsupercharging.co...ategory_id=127
http://forums.corvetteforum.com/c5-s...nly-149-a.html
