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Re: slipped timing belt
First off, if it slipped, you desparately need a new belt.
You may be able to locate timing marks on the cam gear and crankshaft pulley but you would be better off buying the Haynes or Chilton repair manuals to avoid mistakes.
Unless your engine is a 'non-interference' engine, you may end up trashing at least the valves if not the entire head if you don't get it right.
Most engines can tolerate a tooth off in either direction without damage.
My summer toy car, an '87 Bertone, can run this way but it is really weird- either no revs and pulls like a tractor or wild revs with no torque.
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Timing chain stretched, or timing belt skipped a tooth due to wear
Misalignment of timing belt/chain
Tone ring on crankshaft slipped/broken
Tone ring on camshaft slipped/broken
Bad crank sensor
Bad cam sensor
Damaged wiring to crank/cam sensor
Timing belt/chain tensioner damaged
First, visually inspect the cam and crank sensors and their harnesses for damage. If you notice broken/frayed wires, repair and recheck.
If you have access to a scope, check the cam and crank patterns. If a pattern is missing, suspect a bad sensor or a slipping tone ring. Remove the cam gear and the crankshaft harmonic balancer and inspect the tone rings for proper alignment and make sure they're not loose or damaged or that they haven't sheared the key that aligns them. If they are properly installed, replace the sensor.
If the signal appears normal, then check the timing chain/belt for proper alignment. If it's misaligned, check for a damaged tensioner that may have allowed the chain/belt to slip a tooth or several teeth. Also check that the belt/chain isn't stretched. Repair and recheck
If the timing belt slips far enough the pistons will hit the valves and bend them, possibly cracking the pistons as well. If it has not slipped too far the car will either not start or will run very badly, but if it starts the timing belt will slip again and do more damage.
If it is a serpentine belt is is self adjusting. So if it is squealing then it needs replacing as it is worn out. And also possibly the tensioner needs replacing as it may not be holding sufficient tension on the belt. If it is a drive belt it more than likely still needs replacing as it will have become glazed from slipping. On a drive belt it is adjusted by loosening the mounting bracket on the A/C and moving it in a direction that tightens the belt.
Hello, this to me sounds like your fan belt slipping (not timing belt). To adjust the fan belt you need to undo your bolt on the alternator, pull it tight onto the fan belt and while holding it tight do the bolt back up tightly. this will stop yoour fan belt from slipping. I hope this helps.
1. Depressurize and drain the cooling system.
2. Loosen the alterantor adjustment and remove the belt.
3. Remove the water pump pulley. 4. Remove all the timing belt covers.
5. Loosen the timing (camshaft) belt tensioner and slip the timing belt off the
camshaft toothed pulley (ensure you do not move the positon of the camshaft)
6. Unbolt the lower radiator hose fitting and heater retrun pipe. 7. Unbolt the waterpump from the block (5 bolts).
8. Remove all traces of the old gasket before mounting the new pump
(Permatex spray on gasket remover works well).
9. Install the new pump and reassemble in reverse order to above.
if your car has the super charger a slipping belt could cause performance issues. might as well replace both belts at the same time. it'll save you time later.
draw the path of the belts out onto paper for refference. the tensioners are automatic and have a 3/8 rachet drive built into them. if you can't get a rachet in there you'll need a belt tensioner tool (long flat bar with various attachments). you have to pull the tensioner counter clockwise to remove tension from the belt for removal and then again for reinstallation. may take you an hour for both. watch your fingers.