My N/A import uses loads of fuel when the ambient temperature drops below about 12'C. I lose about 40 miles per tank full, and the idle stays high for about 4 mins on cold start ( up to 2k!!). Does any one know the resistance readings of the ecu temp sender, or is this normal? I've had over 20 cars in my time and never noticed a different mpg between winter and summer this extreme.

Dont start yer car for four minutes=fuel saved. :dance: :dance: :dance:

 

 

Its normal Bud as its the automatic choke kicking in when cold.These cars are defo fuel hungry I'm afraid.

My N/A import uses loads of fuel when the ambient temperature drops below about 12'C. I lose about 40 miles per tank full, and the idle stays high for about 4 mins on cold start ( up to 2k!!). Does any one know the resistance readings of the ecu temp sender, or is this normal? I've had over 20 cars in my time and never noticed a different mpg between winter and summer this extreme.

clean the temp sensor connector or replace with a new one (they are actually quite cheap!)

 

illiminate that if not clean the idle speed adjuster connectors and spray some carb cleaner in the adjuster too. its a bit awkward but should slove the idle issue btw its at the back of the plenum passenger side

My N/A import uses loads of fuel when the ambient temperature drops below about 12'C. I lose about 40 miles per tank full, and the idle stays high for about 4 mins on cold start ( up to 2k!!). Does any one know the resistance readings of the ecu temp sender, or is this normal?.

Get a multimeter & check the sensor by measuring the resistance across the terminals which should be around:

 

2.1-2.9 kOhm at 20C (68F)

0.68-1.0 kOhm at 50C (122F)

0.30-0.33 kOhm at 80C (176F).