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Distributor gear replace

Does the head have to come off to replace distributor gear that is on the crankshaft?

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#2 cylinder misfire


This is also causing your miss also
GMC Forum: P1345 Camshaft to Crankshaft correlation faulty
Originally Posted by piecesholden@hotmail.com
I hooked my 1997 sierra up to a OBD Scanner and it reads that i have a P1345 code which is a camshaft to crankshaft correlation fault. Could it be a bad sensor or is it automatically my timing change that needs to be replaced? You are correct, the ECM has detected the timing from the crankshaft and camshaft is off to far to set off the DTC code P1345. It's more common for distributor gear to be worn then your timming chain. If your timming chain is stretched, you can hear it rattleing under hard acceleration.

The 1996 and newer Vortec is a non adjustable timing. There is a very good chance that replacing cam position or crankshaft position sensor will not fix this problem. This code tells you that the base timing of the vehicle is not correct. You really need to get the vehicle scanned with a scantool that will read the cam retard with the engine running over 1200 rpms and then make adjustments by turning the distributor, unless it is timing chain/gear stretch/wear or wear on the distributor gear. You could mark the current distributor orientation and turn the distributor counterclockwise, clear the code and start the vehicle and rev over 1200 rpm to see if it comes back, but the scan tool that can read the cam retard is the best way.

FYI The cam position sensor is in the distributor and the crankshaft position sensor is mounted to the bottom of the motor near the balancer. But i would look in to repalceing the worm gear at the bottom of the distributor shaft, the 97 and 98s, Vortec engine is that the gears were soft and they would actualy wear enough to through off the timing and you could try to adjust the timing but at some point you'll run out of adjustment. Also, the real big problem is that the gear is also hooked to the oil pump and at 75 or so, it may strat to mis-fire and backfire because the timing is so far off and the oil pump is also run off the same gear and your oil pump can fail.

This is a common problem with that vintage of GM distributors because you could usually adjust the timing enough to get the code to go away but you are just masking the real problem. Friend is a GM certified Tech, worked at an Olds dealer for 10 years before opening his own place, but he had never herd of this as being common. He then proceeded to show me a box with about 25 to 30 gears all worn the same way and all from 96 thruogh 99s that had SES lights on. And now with a $40 part and less than two hours labor and ten minutes on a scanner all these 100K mile trucks run fine and can pass E-Test.

Good luck and you really need a Tech2 scanner to get a better picture on why your getting a P1345 DTC code, but most likely it's going to be a $40.00 distributor gear.

Dec 07, 2017 | 1997 GMC Suburban

1 Answer

Need to deturmon if timing chane is stretched on 86 F150 straight 6


There are a couple of ways to do the same thing for checking this. Some will turn the crankshaft with a breaker bar and see if there is a delay for the distributor rotor to move. Others will simply grab the distributor rotor and see if there appears to be play in the timing chain by rocking the rotor forward and in reverse.

Since the breaker plate will move with the points, do not confuse the breaker plate movement with the shaft stem movement.

There is a lot of room for error. The gears on the camshaft and/or the distributor gear can be worn and the timing chain can be fine. Sometimes the spring pin holding the gear on the distributor can be worn. Any of these can cause timing differences.

The Distributors can be checked but it takes a machine that is almost extinct in today's repair shops.

I mostly use the crankshaft method, forwards and backwards to see if the distributor rotor follows my actions on the crankshaft.

Please rate my info.

Jan 10, 2013 | 1988 Ford F 150

1 Answer

Car wont start. rplaces head gasket, spark plus distributor cap.


Its possible that your timing is off since you removed the head and distributor cap, and probably the timing belt. The camshaft, crankshaft and distributor need to be aligned exactly right relative to each other for the timing to be correct. The engine will not start if everythings not aligned right.

Are you sure that you set the timing correctly after you reinstalled the cylinder head?

Sep 10, 2011 | 1995 Toyota Camry

2 Answers

My 2002 Trailblazer has PO1345 Any suggestions where to start


Deals with Cam Shafts and Crank Shafts positioning and sensors.

Make sure your crankshaft balancer bolt is properly torqued, this alone can set his code off.

If not, may need to replace the cam phaser actuator.

Dec 09, 2010 | 2002 Chevrolet TrailBlazer

1 Answer

Leaking oil left side of motor


Since it's not clear whether you mean driver side or passenger side, I will address both.

On the driver side, the most common leak is from the distributor. This can be caused by the distributor shaft exterior o-ring, or it can be caused by the distributor shaft interior bearing seal. To determine which it is, remove the distributor. First detach the spark plug wires, then undo the bolt that holds the distributor to the head, then pull the distributor out of the head. You will see the o-ring on the exterior of the distributor shaft. This is a $0.50 part, so just replace it with a new one as long as you have the distributor out. The bearing seal is on the inside of the distributor. To inspect it, undo the three bolts holding the cap to the distributor body. Pop the rotor off the shaft, the unclip the inside plastic cover. If you see any oil inside the distributor or the distributor cap, this means the seal is leaking and must be replaced. You can get a seal and bearing replacement kit from kbox.ca. Or, you can just buy a new distributor. Note: To get the distributor back in place you must align the shaft correctly with the notch in the camshaft. There is a right way and a wrong way. If the shaft seems to be aligned but does not go in, pull it out and rotate it 180 degrees, then put it back in.

The other possibility on the driver side of the engine is the main seal between the engine and transmission. If this is the case, you would have to either drop the transmission or pull the engine to replace it.

What if the oil is leaking on the passenger side? If it's coming from behind the timing belt cover, there is a camshaft seal and a crankshaft seal, both of which can leak oil. To get to them, you will have to remove all accessory belts and the alternator, remove the exterior crankshaft pulley, remove the engine mount (support the engine) and the timing belt covers, remove the timing belt, then the crankshaft pulley and/or camshaft pulley, whichever is necessary to replace the leaking seal(s).

Where else could oil be leaking from? If it's coming out from near the top of the engine, that's the valve cover gasket. Remove the valve cover and replace the gasket. While you're at it, replace the spark plug tube seals.

If it's coming out from near the bottom of the engine, it could be the oil pan gasket. Remove the oil pan and replace the gasket.

One more possibility for oil leakage: The head gasket. But in this case you would have noticed other symptoms besides just an oil leak.

Good luck! Let us know how it turns out.

Mar 21, 2010 | 1993 Toyota Corolla

1 Answer

Need to know how to install a new distributor and the firing order for a 4 cyl


Firing order is 1342. #1 cylinder is closest to front. (By pulleys)



See Figures 1, 2, 3 and 4
Engine Not Rotated
  1. Disconnect the negative battery terminal.
  2. Turn the engine over until No. 1 cylinder is at TDC of the compression stroke.
  3. Remove the distributor cap. Remove the wire harness connected to the side of the distributor.
  4. Mark the position of the distributor base in relation to the engine block with white paint or other suitable marking material, for reference when reinstalling the distributor.
  5. Loosen and remove the distributor hold-down bolt and clamp.
  6. Carefully begin lifting the distributor up and out. Once the shaft is clear of the engine compartment, inspect the shaft for cracks in the O-seal, the condition of the shaft drive gear and any other part which could lead to distributor problems in the future.

To install:
  1. Check to make sure the engine is still at TDC. Inspect distributor shaft hole to make sure it is free of dirt.
  2. Rotate distributor shaft until the painted mark on rotor is pointing toward painted mark on engine block made during removal.
  3. Continue rotating rotor slightly so leading edge of the vane is centered in vane the switch stator assembly.
  4. Dip entire distributor gear in engine assembly lubricant D9AZ-19579-D or equivalent.

If installing a new distributor, ALWAYS add engine assembly lubricant to the engine oil by pouring it through distributor hole onto the camshaft gear. Run engine at idle for at least five minutes before driving.
  1. Rotate distributor in block to align leading edge of vane and vane switch stator assembly. Verify rotor is pointing at No. 1 mark on distributor base.

If vane and vane switch stator cannot be aligned by rotating distributor in cylinder block, remove distributor enough to just disengage distributor gear from camshaft gear. Rotate rotor enough to engage distributor gear on another tooth of the camshaft gear.
  1. Install the distributor retaining bolt and tighten so the distributor can just barely be moved.
  2. Install the distributor cap and, tighten screws to 18-23 inch lbs. (2.0-2.6 Nm).
  3. Reconnect battery cable. Start vehicle, and check timing. If timing needs adjustment, refer to the Ignition Timing section.
  4. After timing has been set, tighten distributor hold-down bolt to 17-2 ft. lbs. (23-34 Nm).

Engine Rotated with Distributor Removed
  1. If the crankshaft was rotated while the distributor was removed, the engine must be brought to TDC on the compression stroke of the No. 1 cylinder.
  2. Remove the No. 1 spark plug. Place a finger over the hole and rotate the crankshaft slowly in the direction of normal rotation until engine compression is felt.
  3. When engine compression is felt at the spark plug hole, indicating that the piston is approaching TDC, continue to turn the crankshaft until the timing mark on the pulley is aligned with the 0 mark on the engine front cover.
  4. Turn the distributor shaft until the ignition rotor is at the No. 1 firing position.
  5. Rotate distributor shaft so the blade on rotor is pointing toward paint mark on distributor base made during removal.
  6. Continue rotating rotor slightly so leading edge of the vane is centered in vane switch stator assembly. Verify rotor is pointing at No. 1 mark on distributor base.

If vane and vane switch stator cannot be aligned by rotating distributor in cylinder block, remove distributor enough to just disengage distributor gear from camshaft gear. Rotate rotor enough to engage distributor gear on another tooth of the camshaft gear.
  1. Install the distributor retaining bolt and tighten so the distributor can just barely be moved.
  2. Install the rotor and distributor cap and connect all wiring. Tighten distributor cap to 18-23 inch lbs. (2.0-2.6 Nm).
  3. Reconnect battery cable. Start vehicle, and check timing. If timing needs adjustment, refer to the Ignition Timing section.
  4. After timing has been set, tighten distributor hold-down bolt to 17-2 ft. lbs. (23-34 Nm).

Nov 17, 2009 | 1992 Mercury Topaz

1 Answer

Code 1345


P1345 - Crankshaft Position (CKP)-Camshaft Position (CMP) Correlation

Try adjusting the sensor. if this doesn't work, replace it asap.

Jun 24, 2009 | 1998 GMC Sierra

1 Answer

I dont know how to put my spark plug wires in my car


firing order 1-4-2-5-3-6

  1. Insert each ignition wire on proper terminal of distributor cap . Ensure ignition wires are properly seated on the terminals. The No. 1 terminal is identified on distributor cap .
not sure if #1 cylinder is on the front right or front left. Call a dealer.
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Installation
Before installing distributor , visually inspect distributor . Inspect the O-ring. It should fit tightly and be free of cuts. The drive gear should be free of nicks, cracks and excessive wear. Rotate distributor drive shaft. It should move freely, without binding.
  1. To install distributor correctly, No. 1 piston (6108) must be at Top Dead Center (TDC) of compression stroke. Remove No. 1 cylinder spark plug (12405) and rotate crankshaft (6303) clockwise until No. 1 piston is on the compression stroke.
  1. With No. 1 piston on compression stroke, align timing pointer with TDC on the crankshaft damper.
  1. Align locating boss on distributor rotor with hole on armature. Fully seat distributor rotor on distributor shaft.
  1. Rotate distributor shaft so blade on distributor rotor is pointing toward mark on distributor base that was previously made in Step 2 of the Removal procedure.
  1. While installing, continue rotating distributor rotor slightly so leading edge of the vane is centered in vane switch stator assembly.
  1. Rotate distributor in engine front cover to align leading edge of vane and vane switch stator assembly. Verify distributor rotor is pointing at No. 1 mark on distributor base. If vane and vane switch stator cannot be aligned by rotating distributor in engine front cover , remove distributor enough to just disengage distributor gear from camshaft gear. Rotate distributor rotor enough to engage distributor gear on another tooth of camshaft gear. Repeat Step 1 if necessary.
  1. Install distributor hold-down clamp and bolt. Tighten bolt, but leave it loose enough to rotate distributor .
  1. Install distributor cap , No. 1 spark plug and ignition wires. Check that ignition wires are securely connected to the distributor cap and spark plugs . Tighten distributor cap hold-down screws to 2.0-2.6 Nm (18-23 lb-in).
  1. Reconnect distributor to engine control sensor wiring .
  1. Set initial engine ignition timing according to procedures found in Section 8A of the Powertrain Control/Emissions Diagnosis Manual.
  1. After engine ignition timing is set, tighten distributor hold-down bolt on to 20-30 Nm (15-22 lb-ft).
  1. Recheck initial engine ignition timing. Adjust if necessary.

Apr 09, 2009 | 1993 Ford Thunderbird

1 Answer

Does a 1991 Dakota 5 2L have a crankshaft position sensor?


no it has a distributor here is the prodeure for the timing sensor under the cap.
  1. Disconnect negative battery terminal, disconnect distributor lead wire at the wiring harness connector.
  2. Release distributor cap retainers and lift the distributor cap off.
  3. Scribe a mark on the edge of the distributor housing to indicate the position of the rotor. Use the mark as a reference when reinstalling the distributor.
  4. Remove the distributor hold down bolt and clamp, and carefully lift the distributor out of the engine.
INSTALLATION

  1. Clean the top of the cylinder block to insure a good seal between the distributor base and block. If the engine has not been cranked with distributor removed, proceed with step 2. If the engine has been cranked with the distributor removed proceed to step 3.
  2. Position the distributor into the engine. Make sure the O-ring seal is in place on the distributor housing. Align the rotor with the mark previously scribed on the distributor housing. Engage the tongue of the distributor shaft with the slot in the distributor oil pump drive gear. Proceed to step 4.
  3. If engine has been cranked with distributor removed perform the following:
    1. Rotate the crankshaft until number one piston is at the top of its compression stroke. The mark on the crankshaft vibration damper should be in line with the "0" TDC mark on the timing chain case cover.
    2. Rotate the distributor rotor until it is positioned pointing at the number one distributor cap terminal.
    3. Lower the distributor into the engine, making sure the O-ring seal is in place. Engage tongue of distributor shaft with slot in the distributor oil pump drive gear.
  1. Install the distributor hold down clamp and screw and tighten finger tight. Install distributor cap and wires, making sure all high tension wires are firmly secured in cap towers.
  2. Connect pick-up leads and negative battery cable lead. Set ignition timing, refer to ADJUSTMENT PROCEDURES for timing adjustment

Feb 01, 2009 | 1991 Dodge Dakota

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