Ckp wire plug diagram - 2002 Chevrolet Blazer

Hi Chris Johnson,
what engine is there. NO MILES TOLD(ODOMETER)
a Gen 6 car!
no engine told of these gen6

China
2.0 L L34 I4
2.5 L LB8 V6
3.0 L LW9 V6
North America
3.1 L L82/LG8 V6<< which one
google vin decoder tell them and get the engine code and share it. "J" CODE IS LG8
LG8 is my guess, if USA aRE YAH?


405 is egr failing, can be hard to clean and fix it.

336 is crankshaft position sensor= CKP
causes are CKP bad, or wires to it a mess
or bad cam drive bad chain,or its guide or both mostly.
or yes below.(rare to fail ever)

yes the harmonic balancer does have
the CKP tone wheel inside.
if it looks ok is is ok, no bends there.
the CKP sensor , senses those cut outs. to fire and inject fuel.

1993 ford ranger. no car told at all 2.5Liter sourced from wow, that is a hard nut to crack leaving all that out. my guess 1998 2.5L

the old PCM will not like what you just did.
for sure CMP or CKP sensors.
also if one sensor is hall and old car is not it will and
vice versa. came new with 3 engine and not 2.5 ever.
the 2.3L CKP is 4 wire, (one is 12vdc LT/GN wire) so is Hall sensor
to the ICm
so running the old ICm or new?
the 2.3L runs twin 2coil pack pairs in wasted spark mode
wild guess

• 2.5 L OHC I4 (gasoline) (1998-2001)

the 1998 engines, uses its own ECU with NO ICM at all.
and has 2 wire (weak signal, 1v , to PCM direct ,no icm uses
there is CMP sensor too that is for injector firing only
the correct swap is all harnesses under hood and PCM swapped
from new engine donor car, and more, even dash to engine harness.
the current new CMP is useless to any 1993 ECu, the 2.5 liter CKP will NEVER fire the OLD ICU< ever
worse yet the reluctor tone wheel can totally different .

Hey Bob how's it going ? What engine does it have 2.2 3.5 L ? An how did you test for current ? This is a AC voltage .
The crankshaft position (CKP) sensor is a permanent magnet generator, known as a variable reluctance sensor. The CKP sensor produces an AC voltage of different amplitude and frequency. The frequency depends on the velocity of the crankshaft. The AC voltage output depends on the crankshaft position and the battery voltage. The CKP sensor works in conjunction with a 7X reluctor wheel attached to the crankshaft. The CKP sensor produces seven pulses for each revolution of the crankshaft. The pulse from the 10-degree notch is known as the sync pulse. The sync pulse is used to synchronize the coil firing sequence with the crankshaft position. The CKP sensor is used for ignition timing, the fuel injector timing, misfire diagnostics and tachometer display. The CKP sensor is connected to the ECM by a signal circuit and a low reference circuit.
The best way to test is with a lab scope !
Crankshaft position sensor

Try the voltage regulator.

http://www.autozone.com/autozone/repairinfo/repairguide/repairGuideContent.jsp?fromSearchPage=true&pageId=0996b43f802c54e2&partName=Crankshaft+Position++CKP++Sensor&partId=0996b43f802c54e2

DIAGNOSTIC TROUBLE CODE (DTC) P1391: "INTERMITTENT LOSS OF CMP OR CKP"
This DTC is monitored with the engine cranking or running. This DTC will be stored in the Powertrain Control Module (PCM) when the PCM FAILURE COUNTER reaches 96 failures for 2 consecutive trips.
Posiible causes are: Craknkshaft Position (CKP) sensor improperly installed, defective CKP sensor, defective distributor, defective Camshaft Position (CMP) sensor, defective PCM, defective or broken flywheel, defective connectors or defective wiring.
Proper diagnosis is recommended before replacing ANY parts.

WHAT CKP SENSOR DID YOU REPLACE I BELIEVE THE SEDONA 3.5L ENGINES HAS 2 CKP SENSORS.YOU HAVE ONE CKP SENSOR LOCATED FRONT OF ENGINE ON THE OIL PAN MOUNTED BEHIND CRANKSHAFT PULLEY AND THE OTHER CKP SENSOR LOCATED NEAR THE TRANSMISSION BELLHOUSING. CHECK TO SEE IF YOU HAVE CKP SENSORS. IF NOT CKP SENSOR WIRE COULD BE DAMAGED.ALSO CHECK TO MAKE SURE BATTERY POWER GOING TO CKP SENSOR B PLUS WIRE IF NOT CHECK THE ECCS RELAY OR FUSES MAKE SURE POWER IS GOING TO CKP POSITION SENSOR

code p 0320 refers to crankshaft position sensor (CKP)/ engine speed (RPM) sensor --circuit malfunction===causes wiring---CKP/RPM sensor--ECM
from your statement of moving coil wires and it temporarily fixed the fault , I suspect wiring failure to the tacho( RPM sensor) as the RPM sensor works of coil impulses
by moving wires you may be altering the circuit fault for the CKP sensor
take it to an accredited service center for a proper diagnosis

i need 4g91 wiring diagram.urgent....