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tims auto repair, mechanic
Category: Chevy
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Experience: owns a repair shop...25yrs
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2002 Chevy Blazer: check engine light..distributor..cam sensor

Resolved Question:

I have a 2002 Chevy Blazer ZR-2 the check engine light is still on after replacing the distributor, intalling new oxygen sensor, cam shaft sensor and cam sensor. The code it gives now is 1345.

Submitted: 1 year ago.
Category: Chevy
Expert:  tims auto repair replied 1 year ago.

hi

the 1345 code means the distributer is installed incorrectly,,,it is a little out on the distributer...you may have it one notch off..you need to install the distributer this way

you need to take out the #1 plug,,,hold your finger on the plug hole...have your help to bump the starter till you feel air[compression]start to come out of the hole....then hand turn the engine until the mark on the harmonic balancer is on [o]..now you have the #1 piston up on the compression stroke...now,install the distributer to where the rotor is pointing to the #1 plug wire terminal...now it is in time

thanks

Please ACCEPT my answer by clicking the accept button, so I can get credit for my work.i don't receive commission unless you do ..I'm not always going to be giving you good news,so please don't let this stand in the way of you accepting my answer.it does not cost you more money.we will still be able to communicate.please understand,i can not see,hear or touch the vehicle and only know what you tell me. Bonuses and positive feedback are appreciated!if you are not satisfied with my answer,please do not leave bad feed back,i will gladly opt out and let another expert handle the question.if i have sent any diagrams,please print them.they will only stay on here for an hour or so...sometimes you may need to right click the image,then save picture as]to save it to your computer so you can open it with your picture program...PLEASE ASK IF YOU NEED MORE HELP

 

graphic

 

2002 Chevy Truck S10/T10 Blazer 4WD V6-4.3L VIN W
Computers and Control Systems Testing and Inspection, Diagnostic Trouble Code Tests and Associated Procedures: P Code Charts, P1345
CIRCUIT DESCRIPTION
This diagnostic trouble code (DTC) monitors the crankshaft position (CKP) and the camshaft position (CMP) signals to determine if they are synchronized. If both signals are not observed by the control module within a narrow time window, the powertrain control module (PCM) will determine that an error has occurred.

CONDITIONS FOR RUNNING THE DTC
The engine is running.

CONDITIONS FOR SETTING THE DTC
When the engine is running, the cam sensor pulse is not detected at the correct relative position to the CKP sensor pulse.

ACTION TAKEN WHEN THE DTC SETS
^ The control module illuminates the malfunction indicator lamp (MIL) when the diagnostic runs and fails.
^ The control module records the operating conditions at the time the diagnostic fails. The control module stores this information in the Freeze Frame/Failure Records.

CONDITIONS FOR CLEARING THE MIL/DTC
^ The control module turns OFF the malfunction indicator lamp (MIL) after 3 consecutive ignition cycles that the diagnostic runs and does not fail.
^ A current DTC, Last Test Failed, clears when the diagnostic runs and passes.
^ A history DTC clears after 40 consecutive warm-up cycles, if no failures are reported by this or any other emission related diagnostic.
^ Clear the MIL and the DTC with a scan tool.

DIAGNOSTIC AIDS
Check for the following items:
^ A loose or missing distributor hold down bolt
^ A loose CMP sensor causing a variance in the sensor signal
^ An incorrectly installed distributor-1 tooth OFF in either advance or retard positions
^ A loose distributor rotor on the distributor shaft
^ Excessive free play in the timing chain and gear assembly

If an intermittent condition is suspected, refer to Intermittent Conditions. See: Computers and Control Systems > Initial Inspection and Diagnostic Overview > Intermittent Conditions

TEST DESCRIPTION

graphicSteps 1-10

The numbers below refer to the step numbers on the table.
4. This test will determine if this DTC is intermittent.
5. If there is a variance in the camshaft sensor signal the variance will be detected in this step.
6. Unintentional damage to the distributor shaft may result if excessive pressure is used to rotate the distributor.
Please ACCEPT my answer by clicking the accept button, so I can get credit for my work.i don't receive commission unless you do ..I'm not always going to be giving you good news,so please don't let this stand in the way of you accepting my answer.it does not cost you more money.we will still be able to communicate.please understand,i can not see,hear or touch the vehicle and only know what you tell me. Bonuses and positive feedback are appreciated!if you are not satisfied with my answer,please do not leave bad feed back,i will gladly opt out and let another expert handle the question.if i have sent any diagrams,please print them.they will only stay on here for an hour or so...sometimes you may need to right click the image,then save picture as]to save it to your computer so you can open it with your picture program...PLEASE ASK IF YOU NEED MORE HELPtims auto repair41032.5818875

tims auto repair, mechanic
Category: Chevy
Positive Feedback: 96.9 %
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Experience: owns a repair shop...25yrs
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