Toyspeed.org.nz Message Board

by **phatman3801** » Fri Jul 22, 2005 9:42 pm

hey ive had the exhaust done on my blacktop not so long ago, and was under my car the other day and noticed that there are no sensors pluged into the new pipe at all now!! is that ok, or should they have been repluged into the new exhaust, and the shop has just cut corners??

by **qik20v** » Fri Jul 22, 2005 9:54 pm

its alright,

it jsut went into the cat convertor,

but you should still have a O2 sensor before the crossmember

by **CozmoNz** » Fri Jul 22, 2005 9:55 pm

Id say so, unless he got the headers done too... which no one does on a blacktop anyway ^_^.

so its all fine, youd start getting error codes if it wasnt getting anything from the 02 sensor.

by **phatman3801** » Fri Jul 22, 2005 10:06 pm

headers have been done, they have been redesigned into a 4 to one, so its 2 1/4 from right at the start of the system, and there is no o2 sensor pluged in! is that def needed to be pluged in?

by **CozmoNz** » Fri Jul 22, 2005 10:10 pm

phatman3801 wrote:headers have been done, they have been redesigned into a 4 to one, so its 2 1/4 from right at the start of the system, and there is no o2 sensor pluged in! is that def needed to be pluged in?

Go seach what open and closed loops are with ECU's

thats why they need them, and yes, blacktop ecus do this too.

by **phatman3801** » Fri Jul 22, 2005 10:13 pm

what? wot bout the ecu? lol

by **CozmoNz** » Fri Jul 22, 2005 10:18 pm

"Closed loop mode means that the ECU will compare the measured air/fuel ratio to the target air/fuel ratio and automatically increase or decrease fuel delivery accordingly. In open loop mode, the ECU will still use the oxygen sensor to read air/fuel ratios, but will not adjust fuel delivery as in closed loop mode."

Closed loop = Check exhaust for A/F ratio, and will increase or decrease fueling to cope.

Open loop = predefined *map* of fueling (if you will).

by **phatman3801** » Fri Jul 22, 2005 10:21 pm

so it is beeter to have th o2 sensor then right?

by **phatman3801** » Fri Jul 22, 2005 10:30 pm

just wanna no if the exhaust shop is fuked up and i should be going bak and hitting them up!

by **CozmoNz** » Fri Jul 22, 2005 10:56 pm

just go back in and have an ask, what they did about the o2 sensor

by **phatman3801** » Fri Jul 22, 2005 11:08 pm

yep i will do, but it really should have the o2 sensor pluged in right?

by **CozmoNz** » Fri Jul 22, 2005 11:20 pm

by **matt dunn** » Fri Jul 22, 2005 11:20 pm

phatman3801 wrote:yep i will do, but it really should have the o2 sensor pluged in right?

Yes.

by **phatman3801** » Sat Jul 23, 2005 7:20 pm

rang the shop today and spoke to the guy who wroked on ym exhaust, he told me it didnt have an oxy sensor, so went home and looked at the factory system and theyres defintly a hole for the o2 sensor so hes just bull shitting me :twisted:

by **l1ttle_d3vil** » Sat Jul 23, 2005 9:57 pm

take it and show him then and tell him he's talking @$$.

by **phatman3801** » Sat Jul 23, 2005 11:11 pm

i i will be first thing monday! he betta hope he still has that o2 sensor or they will have a buy a new one and put it in! :twisted:

by **Adamal** » Sat Jul 23, 2005 11:12 pm

If your car has an O2 sensor as standard, then it needs one. If you take it out, it won't be able to tell if your car is running too rich or too lean. Thats what they're there for, to make adjustmesnt to the A/F ratio.

by **phatman3801** » Sat Jul 23, 2005 11:15 pm

yep well the dumb iddiots at the exhaust place who re did my exhaust didnt put the sensor bak in the just took it all off then when i asked them where it was they said it never had one which is bull shit! so ill be paying them a nice freindly visit on monday

by **CozmoNz** » Sun Jul 24, 2005 12:47 am

Is the sensor around that area?
might be dangeling around or something...
if its not there, it cant be put there...

maybe you have a l33t aftermarket ecu running open loop the hole time?

by **phatman3801** » Sun Jul 24, 2005 12:51 am

nope they hav unplugeed it from the loom as i found where it should be plugged into the loom, so im guessing they couldnt be fuked trying to put it into the new pipe so just unpluged it and threw it away

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sensors on exhaust? are they needed?

sensors on exhaust? are they needed?

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