Hi guys the other day my check engine light came on then it happened the next day, also both times it went back off in a few minutes but now I have a code 71 for EGR system in my computer. Both times when it happened the car ran the same. So I am not too concerned but I am trying to tune up the motor and am concerned as to what sensors this could be identifying as bad or what it means???? This isn't for the o2 sensor correct I believe that code is a 27? Could it just be a dirty throttle body? What exactly does the EGR system include? Any thoughts.....Thanks guys......
Help code 71? - 6G Celicas Forums
Also I have a wideband innovate AFR gauge hooked up and my afr range is 14.1 to 14.9 at cruise 3,000 rpm 60mph. Now I can't find anywhere if it is normal for the AFR to fluctuate that much at cruise? It also fluctuates at idle 14.4 to 14.8 I am guessing it is normal. Anyone have any professional tuning experience? Thanks again......
code 71 is egr gas temp too low. now that could mean the egr system is faulty, or the egr temp sensor is bad.
QUOTE"And, as always, your friendship, help, and dedication to the advancement of Texas Celica dominance is GREATLY appreciated. Thanks bro." -DEATH1994 GT:V6 swap, 5speed E53 W/ LSD, All Power, now RED1995 ST:SOLD @273k miles, Auto, all power, CarPC, White1994 ST:Totaled, 5spd, all power, RedRIP 07/09/09 @ 241,8101994 Lexus LS400:This is my new DD
Thanks for the reply, I wonder how the gas temp could become too low??? Probably a faulty sensor?????
its probably the sensor. or a blockage in the egr tube, or a faulty egr valve - in order of probability.
QUOTE"And, as always, your friendship, help, and dedication to the advancement of Texas Celica dominance is GREATLY appreciated. Thanks bro." -DEATH1994 GT:V6 swap, 5speed E53 W/ LSD, All Power, now RED1995 ST:SOLD @273k miles, Auto, all power, CarPC, White1994 ST:Totaled, 5spd, all power, RedRIP 07/09/09 @ 241,8101994 Lexus LS400:This is my new DD
That amount of fluctuation in your AFR's is perfectly normal BTW
ENGINE: '93 RC 3S-GTE/WRC CT-20b [18-20PSI]PERF: TRD/HKS/ARP/NGK/MSD/ACT/Blitz/STRI/APEX'i/TwosRus/GReddy/Magnaflo/KOYOSUSP: Tein/Bilstein/SusTech/INT: SS-III SEATS/Toyota Hyper SportsEXT: WRC/TRD/404QUOTE (lagos @ Aug 25, 2010 - 10:13 AM)Its a safety feature so that people like you don't end up killing themselves or everyone around them.Slow down Paul Walker.6GC Chat - Go there: [url="http://www.griffgirl.com/forum/chat/index.php[/url]
Thanks for all the responses when I get some free time I'll have to try and clean out the egr system. I thought AFR was probably o.k. but I wanted to be sure so thanks......
Brandon
Brandon