wifes car cant get rid of CEL
alright first off car is a 98 civic lx just basic intake,exhaust, keeps giving me code po172 which is (sytem rich) in haynes manual and on strap-on scan tool (system rich bank1) but anyway had a hairline crack in manifold (repaired with manifold sealant) put a new universal o2 in it last year and just changed map sensor last night and code still comes back.now i was thinking maybe an injector was stuck open flooding bank 1 with fuel that the ecu cant compensate for but almost out of ideas and i live in virginia so now that the emmisions test for obd II cars have to hook up directly to the obd port i have to have this light gone in order to pass. any help is greatly appreciated!!!!!
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Re: wifes car cant get rid of CEL
if you are thinking an injector is stuck open, check your spark plugs to see if they all look the same.
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Re: wifes car cant get rid of CEL
Originally Posted by SloS13
if you are thinking an injector is stuck open, check your spark plugs to see if they all look the same.
just did a tune up about a month ago and code has been there longer than that so i know plugs should still be good but will check them anyway any thing else i should be looking for or what else it could be going to check injectors and plugs tomm. i have another set of injectors and a set of iridium plugs ill throw in it. |
Re: wifes car cant get rid of CEL
swap cyl 1 injector to 4 and see if the code changes to cyl 4. ?
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Re: wifes car cant get rid of CEL
the code is for bank 1. isnt bank 1 cylinders 1and4 considered bank one like the pwo and pr3 jdm b16 that the ecu reads from 2 banks instead of one could be wrong but enlighten me
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Re: wifes car cant get rid of CEL
you could also get a fuel pressure gauge on it and see if the pressure dropps when the car is off, which will show a leaking injector.
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Re: wifes car cant get rid of CEL
if your civic is a 4 cyl then you only have bank one
in a v6 or v8 u have banl 1 and bank 2 you have a upstreaM and maybe a downstream o2 check your egr valve it may be malfuntioning, and can cause a rich condition i do emmisions repairs at work and we get a lot of egr valvs some sticking or even the egr port could be cloged and ---- |
Re: wifes car cant get rid of CEL
the 1st gen b16's read off of 2 banks and its a y8 motor so there is no egr valve at all
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Re: wifes car cant get rid of CEL
and yes it has an upstream and downstream o2's most all obdII cars do at least honda's do
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Re: wifes car cant get rid of CEL
have u replace both? when one isnt working prop it can condem the other aswell or buy it self
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