Idle Studder

TurtleS14

Spectator
It doesnt do it until the car has heated up to its riding temp, but while its idling it starts to studder. every 5 seconds or so the rpms drop then go back to idle really quick.

What can this be?
 
Coolant temp sensor since its when it gets operating temp
It could be a number of things
Check for codes and post back
 
It threw P1400 error code EGR & Canister solenoid valve, but i took the egr out and blocked it all off properly.

it also threw P0110 Intake Air Temperature Circuit Malfunction, I looked it up and it said it could be from a dirty air filter or dirty MAF sensor, so I just cleaned both of those yesterday, removed the neg from the battery for about thirty mins.

Im going to drive it today and then check the codes again, ill update when i do so
 
so i ran the codes again and the same ones i got last time which are posted ^^^^^. could this be a bad MAF?
 
P0110 Intake Air Temperature Circuit Malfunction

On the s14s there is a air intake temp sensor mounted in the air cleaner housing. maybe you should check it out.
 
Yeah check for vac leaks
By sprayin carb spray on intake an hoses whilst its running
Does ur car rev past 3500?
If no its maf
Iat works with coolant temp sensor so change it out...:bigthumbu
 
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