Always open loop @ idle...

[suprafredde]

Modds: exhaust, ic and hardpipes, saab bov, saab apc (EBC), SAFC2 (no corrections for now) and MAFT.

Idle @ 800 (pretty high)
Thr 0% (about 0.5V or something)
Kar 33Hz
Engine temp sensor showed 410ohm (took about 5 min before I could reach the terminals, stupid PS reservoir)

After driving the Vf sits @ 0V @ idle.

Then if I apply some throttle it goes up to 1.1V Vf @ 1400-1500 rps.
(could this be a result of unburnt fuel?)

@ cruise the Vf is ok 2.2-3.4V but it makes a plopping sound like a missfire or something and the car feels jerky.
Have changed wires and sparkplugs but still the same...

Cold start injector or one of the others is leaking?
Wiring from coilpack to box?

Give me all you can think of PLZ, this car is driving me CRAZY!!!

suprafredde

 

[isnms]

After driving the Vf sits @ 0V @ idle.

That means you are running rich at idle.
Air restriction - clogged air filter?

EDIT: How is your MAFT tuned? Maybe Grim can help you on that.

 

[shaeff]

check your codes... (use the link in my sig)

possibly a TPS problem?

-shaeff

 

[mrnickleye]

Engine temp below 160* will keep you in open loop. ECU coolant temp sender reading too low can do it to. TPS can too.

 

[suprafredde]

Doooooooooooh!!! Should have checked my codes first no I look like a noob.
Well, it gave me a 34, expected that one :evil2:

But also a 22 (WTS), but know I remember taking off the connector yesturday to meassure the resistance. The engine must be started for the ecu to register codes right?

suprafredde

 

[suprafredde]

Well it is not the temp sensor.

And I now know that it reads codes both on ignition and when cranking.

So TPS will get removed and inspected tomorrow.

Could it be something else?