Car Running Very Cold And Rich

[HungarySkyline]

My R33 N/A is 18*c when i start up in the morning and when the cars warmed up it stays at around 54*c, i owned this car for 1-2 months im noticing its using heaps of fuel, had a pretty large radiator installed. Its running rich, I get about 300-400km on a full tank,

The car just had its timing belt replaced and waterpump , last owner neglected it for 11 years. Any ideas to get better economy? cheers

[Hadouken]

o2 sensors

clean afm

what is your L/100?

[HungarySkyline]

It was at 18/100km before i cleared the data, And iv been very light on throttle and its at 15.4/100km

I cleaned the AFM, could be the o2 ill check it out.

[jjman]

sounds like thermostat without a doubt.

mine had same symptoms n replacing it fixed it.

[mad082]

+1 for thermostat. it is the only thing that will make it run cold. this also makes the engine not come up to normal operating temp so it will be running on cold start enrichment and may well be ignoring the o2 sensor. this results in poor fuel economy. put a new thermostat in and you will see better fuel economy straight away. it will probably drive a bit better as well

[adamskill]

My R33 N/A is 18*c when i start up in the morning and when the cars warmed up it stays at around 54*c, i owned this car for 1-2 months im noticing its using heaps of fuel, had a pretty large radiator installed. Its running rich, I get about 300-400km on a full tank,

The car just had its timing belt replaced and waterpump , last owner neglected it for 11 years. Any ideas to get better economy? cheers

your thermostat is rooted mate

[StevenCJR31]

use a genuine NISSAN thermostat , they are the best

[mad082]

use a genuine NISSAN thermostat , they are the best

this. don't put a nismo thermostat in with a lower temp rating. not good for street use.

[jjman]

your thermostat is rooted mate

use a genuine NISSAN thermostat , they are the best

this n this.

thankfully they arent too expensive from nissan compared to some other imports/JDM.

Obviously repco etc will be cheaper with a generic brand but its not worth the risk n effort.