L337rx7

The ole seven hasnt been up to par lately... found out theres a leak in the exhaust manifold... but the guy said maby a failure in the o2 or temp sensor is causing to much gas to be fed, cauzing poor performance, bad gas mileage... could this be legit?

88t2romad

swap out the 02 sensor and find out. There could be a number of other stuff attributing to your problems.

NZConvertible

Coolant temp sensor yes, O2 sensor no. The coolant temp sensor is quite important and a faulty one can cause problems, particularly if the ECU thinks the engine is colder than it really is. A faulty O2 sensor has almost no effect on how well the engine runs, since it's only used during light load cruise. Fuel consumption will increase a small amount.

SureShot

Got a check engine light?

Also the aux intake ports may be stuck.

vicious525E

is there anything wrong with running a s5 coolant temp sensor on a s4 ecu? just curious, been having alot of trouble with bogging down and we beleave it is just the high impedance injectors (resistor blocks taken out) but who knows

RETed

Exhaust temp sensor?
Exhaust floor overheat sensor?
#1 does not exist.
#2 does not affect how the engine runs.


-Ted

KompressorLOgic

iTrader: (6)

he might be talking about that "exhaust over heat" sensor under the passenger seat? what does that thing actually do?

RETed

It just lights up the warning light in the cluster when the grass under the car catches on fire.


-Ted

-=1OneShotNO2=-

hey i need to change my o2 sensor for my smog test.. it seems pretty hard to get too.. any tips?.. and what size wrench do i use?