Top 20
2004 Cadillac SRX Questions & Answers
Removing the valve cover on the passenger side on a 2004 cadilac srx with the 4.6 liter northstar engine. the engine sits north and south in the vehicle.
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SRX Engine Cooling Fan
Remove the air cleaner intake duct. Refer to Air Cleaner Outlet Duct Replacement .
Important:
The fan nut has left hand (REVERSE) threads.
Do not completely remove the fan from the crank adapter shaft.
Loosen the fan nut from the crank adapter shaft using J 41240-5A .
Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
Disconnect the engine wiring harness from the engine frame and reposition aside.
Continue to loosen the fan nut and disconnect the fan from the crank adapter shaft.
Remove fan from vehicle.
Throttle position sensor
could be but guessing is a waste of money
you need to state all of the codes shown as there will be a common on for all and that is what you should be fixing next
My truck sys service stability
didnt specify vehicle besides truck and caddy --have vehicle scanned for a trouble code most auto stores offer this service for free --next check the abs sensors and hubs of vehicle for damage or wear
PO174 AND PO171\
code p 0171 refers to system too lean bank1===causes ---intake /exhaust leaks--AIR system---MAF/VAF sensors --fuel pressure/pump--injector/S=== HO2S
code p 0174 refers to system too lean bank 2====causes intake /exhaust leak---fuel pressure/pump---injector/s---AIR system---hose connection/s
the fuel pressure is adequate
The HO2S is the heated oxygen sensor in the exhaust manifold /pipe before the cat converter
( is responsible for the fuel ratio settings )
you may have to pull the injectors to have them cleaned and tested
the maf/vaf sensor may have to be replaced as well
Where is the VSS is located on a 2004 SRX?
Inside the transmission , pull the pan ! It's the out put speed sensor.
The A/T OSS sensor is a variable reluctance magnetic pickup located in the rear of the transmission case. The sensor is mounted in the case (24) opposite the rear internal gear (560). The rear internal gear is splined to the output shaft assembly (562). The sensor consists of a permanent magnet surrounded by a coil of wire. As the output shaft and rear internal gear rotate, an alternate current (AC) is induced in the coil by the 'teeth' on the rear internal gear as they pass by the magnetic pickup. Therefore, whenever the vehicle is moving, the A/T OSS sensor produces an AC voltage signal proportional to vehicle speed.
At the TCM, the AC signal is electronically converted to a 5 volt square wave pattern. The square wave pattern can then be interpreted as transmission output speed by the TCM through the frequency of square waves in a given time frame. The square waves can be thought of as a representation of the rear internal gear teeth. Therefore, the more teeth or waves that pass by the magnetic pickup in a given time frame, the faster the vehicle is moving. The square wave pattern is compared to a fixed clock signal internal to the TCM to determine transmission output speed. T
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