boxster250

Hi can anyone help here i am trying to locate the crankcase sensors on my 99-996 3.4.carrera.

any advice would be appreciated.

regards RW

This is the support topic for the DIY Tutorial 3.4 liter Engine Parts Locations. Please post here if you have any questions or feedback.

Hi Loren can you please indicate just where i can locate the crankcase sensors

regards RW

we have a problem with tickover after engine gets warm //coil packs changed/plugs changed/lampdar sensors changed/oil changed/new fuel filter/oil filter/MAS changed/air intake cleaned//

we would appreciate any advice as we are stumped.

Depends on the year of your car, Dharn55 is correct for a 3.4 motor, with the switch to vane adjustment on the 3.6-on motors, they are on the opposite ends.

-Todd

Hi would faulty camshaft sensors relate to emissions problems (runs good at tickover when cold but when its warmed up it starts running badly.

regards RW

The oil heat exchanger has an "oil breather hose" on the top of it. Is that the hose you are looking to replace? If memory serves, the oil heat exchanger is back behind the throttle body. Due to limited space, you'll probably need to pull the throttle body and air distribution tubs to get to the top of the oil heat exchanger. GA

Thanks we are going to try this //are there any other engine oil breathers small and short// would appreciate your input.

regards RW

I think you're looking for the air-oil seperator. Also check the oil filler neck because it can crack and cause a vacuum leak that will give you an extremely high idle.

Thanks for your answer but i am looking for an engine oil breather pipe small and short//it breaks down and creates bad running on tickover.

regards RW

can anybody help here the location of the engine oil breather hose is just evading us 99-996 3.4

we need to change the hose to correct the idle speed (we hope) changed plugs// no air leaks// changed lampda sensors//

changed coil packs// changed air flow meter// butterfly clean//

Depends on the year of your car, Dharn55 is correct for a 3.4 motor, with the switch to vane adjustment on the 3.6-on motors, they are on the opposite ends.

-Todd

Many thanks for your contribution Todd.

The sensors on on the intake cams on the driven end, so for 1-3 on the side (drivers) they are toward the front of the engine on the top of the head, and on the 4-6 side on the rear of the engine, again on the top of the head. Pretty hard to get at the 1-3, a little easier for the 4-6 if you remove some misc. stuff (airbox, etc.). Here are some pics that might help you, sorry they are not better.

Hi many thanks for your trouble and its a great help i am trying to get an exploded picture of the 996 engine my efforts have been in vain.

regards RW

where is the location of the camshaft sensor on a 996 carrera4 (trying to find cause of misfire/ renewed plugs//lampda sensors//coil packs//air flow meter//

any advices appreciated.