andyfisher

hiya, my sierra cosworth has bein running a little bit lumpy recently took air temp sensor out and put new 1 in still runs lumpy and misses a little cuming of idle, then revs ok. took it out completely and it runs perfect could i run me car all the time without this sensor? thanks

studabear

no defo not, there might be another problem that unplugging this sensor is masking, It needs to prob go on a monitor/diagnostic or to a tuner imo

andyfisher

cheers, was only just at motor sport developments a month ago they didnt pick out up but only just started missing a little bit a week or so after being there, will plug it back in now, just hope its not the loom

VEEDUBBED

I've got the same problem mate,strange thing is that my engine runs fine and the iaw warning light remains off!,even with the dam connectordisconected.
If that light is off i'm thinking that no fault would be logged within the ecu's memory.
Let's hope someone has a few ideas.

dave cos4x4

iTrader: (5)

are we talking about the brown sensor.

try renewing the blue one.

andyfisher

yeah myn is the brown sensor changed it for a brand new one and still the same, seems to only run better without it pluged in lol

tabetha

The air temp only trims the fuel, the main corrective is the CTS, so I'd be bunging one of them in first, or at least checking the co.
tabetha

Stu @ M Developments

iTrader: (12)

Unplugging that sensor is simply proving that the engine runs better with more fuel and potentially, less advance.