I have computer codes p0320 and po750 on my 2002 ZX5 focus can any one help me on what the mean

codes are OBDll and are available on line free

The most common cause of the DTC (Diagnostic Trouble Code) PO320 is either a defective CKP (Crankshaft Position) sensor or poor connection. Inspect the Crankshaft Position (CKP) sensor circuits and harness for a possible chafe on ground.Wiggle test the CKP sensor circuits with the engine idling to see if tapping or wiggling on the harness will result in a misfire or stall condition.

Question edited for clarity.
Question moved to model category.

Wheel bearing are the most likely. If you just jack up the car, you will feel movement or roughness. The other possibility is the transmission. check the oil level or ATF level.

Ideas here, also mechanics have magnetic microphone kits to pinpoint noise.

https://www.google.com/search?q=2005+Ford+Focus+ZX5+driving+and+loud+humming+sound

What the P0320 code means. When the P0320 diagnostic trouble code is stored by the Engine Control Module (ECM), it is an indication that there is a malfunction in the ignition/distributor engine speed input circuit.

vehicles do not throw codes otherwise you have to pick them up, thy are displays
all codes are on line

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P0320 OBD II Trouble Code Ignition Distributor Engine Speed Input Circuit...

OBD II Trouble Codes Home

code p0320 means faults crankshaft position sensor (CKP) sensor/ engine speed (RPM) sensor ---circuit malfunction. Check Wiring---CKP/RPM and ECM engine control module

Try some marvel mystery oil in your gas this should free the stuck valve

you can go to this website to check codes http://www.eobd2.eu/DTCL.asp

this code means- Insufficient Coolant Temp For Closed Loop Fuel Control

hope this helps

Your diagnostic about this CODE is:

Generic P-Code DRB Scan Tool Display Brief Description of DTC
P0171 (M) 1/1 Fuel System Lean A lean air/fuel mixture has been indicated by an abnormally rich correction factor.
P0320 (M) No Crank Reference Signal at PCM No reference signal (crankshaft position sensor) detected during engine cranking. P0320 (M) No RPM Signal to PCM (Crankshaft Position Sensor Signal to JTEC) A CKP signal has not been detected at th
For more details, you can visit the obd_dtc_jeep

Good luck, and rated this help.

P0320 Ignition/Distributor engine speed input circuit
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