monty1991 Posted June 18, 2014 Share Posted June 18, 2014 just recently my wideband has been reading rich 11.3 when shes warm. reads 14.7 from cold start but goes rich after few minutes driving, car seems to be running as normal just weird readings :/ disconnected the lamdba and made no difference to the readings, does this mean i need a new one? also checked for vacuum leaks an cant see anything anyhelp would be great lads! Quote Link to post Share on other sites
mikey4410 Posted June 18, 2014 Share Posted June 18, 2014 As I found recently my wideband sensor failedreadings were mentalinwent on a wild goose chase for weeks as I never thought it could have been faulty. Not saying its defo that but please remeber it could be a possibility. At cold start should be around 11 to 12.14.8 at idle and cruise when warm11-11.5 at wot Quote Link to post Share on other sites
monty1991 Posted June 18, 2014 Author Share Posted June 18, 2014 mines always been 14.7 @ cold start and idle and cruise reads 11 when wot then just like 12 -13 when cruising my sensor did mess around a few months back after washing my engine bay but it came back an worked normal again. wideband sensors are a rip off too! lol Quote Link to post Share on other sites
mikey4410 Posted June 18, 2014 Share Posted June 18, 2014 Well thats not right.thats very very odd. Quote Link to post Share on other sites
richardc9052 Posted June 18, 2014 Share Posted June 18, 2014 What make is it? Try using the wideband as the lambda. If it goes back to normal it was your lambda I'll explain more if you give me the make Quote Link to post Share on other sites
TurboTobz Posted June 19, 2014 Share Posted June 19, 2014 Should be a PLX DM6 I believe? Quote Link to post Share on other sites
monty1991 Posted June 19, 2014 Author Share Posted June 19, 2014 thats the one. can ya use it as lambda Quote Link to post Share on other sites
Ollieh17 Posted June 19, 2014 Share Posted June 19, 2014 Mine goes to 17+ on idle and idles around 800. Soon as i rev it goes to 14-15. Also on cruise with no peddle wideband just shows lines Quote Link to post Share on other sites
richardc9052 Posted June 19, 2014 Share Posted June 19, 2014 Yes you can. the plx has 2 outputs, one wideband and one narrowband unlike the others where you have to switch the two. I am however unfamiliar with the wiring of the plx so if you can find out which wire does what, snip the lambda wire near your ecu and connect it to the wire from the plx. Quote Link to post Share on other sites
monty1991 Posted June 19, 2014 Author Share Posted June 19, 2014 http://www.plxdevices.com/AppNotes/PLXApp004.pdf found that. would i needa fit resistors or would it be ok? Quote Link to post Share on other sites
monty1991 Posted June 19, 2014 Author Share Posted June 19, 2014 Update! Ran her on the widebands narrowbandGot sum weird readings11 on cold and warm idle11 on cruiseOn wot she went 14.7 then 10An she seemed to be running rough an ya could smell the fuel :/Switched back to normal wideband an running better an same readings as beforeThink my wideband sensor is knackeredWat yas think??? Quote Link to post Share on other sites
richardc9052 Posted June 19, 2014 Share Posted June 19, 2014 yeah wideband is dead.. Quote Link to post Share on other sites
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