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Starex timing belt

Why do my starex timing belt always broke,while bearings and tensioner are new

Posted by Anonymous on

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  • 2 Answers

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Posted on Jan 02, 2017

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let me clarify the belt names for you before that, the fan or serpentine belt is the belt which all the accessories run on like the alternator and power steering pump and is different from the timing belt completely. the timing belt is hidden away and you cannot see it on most cars and keeps the camshaft in sequence with the crankshaft, Im not entirely sure but I believe ford V6s have a timing chain. heres the deal, the idler tensioner pulley has to have some tension put on it to bend it up and out of the way while you place the serpentine belt, study the ider tensioner pulley closely and the diagram under the hood, the idler pulley has a large bolt in the middle which you have to put a socket and wrench on .using force against the spring loaded pulley, either push down or up on the pulley with the wrench to temporarily give you the clearance needed to set the belt and gently release, (having a helper helps) once you doublecheck that the belt is PERFECT then start the car. My 83 LTD's idler pulley is adjusted with a bolt, I believed they have changed it to the spring loaded design that I spoke about above, if its the spring loaded design, that should do it,
good luck


Posted on Jul 12, 2008

  • 341 Answers

SOURCE: drive belt tensioner pulley

the tensioner pulley is a small plastic or metal wheel about 3 inches big of engine....

Posted on Dec 11, 2008

  • 7 Answers

SOURCE: Timing Belt Problem-6 cylinder Saturn wont' start

If your timing belt broke, then it is possible that the valves in your engine got bent, which won't allow the cylinders to pressurize the fuel/air mixture, and it will let all of the mix to flow freely into the intake/exhaust manifold. This can be checked with a pressure tester that is threaded into the spark plug opening. A mechanic should have one, or you can probably find one at an auto parts store.

Posted on May 21, 2009

  • 75822 Answers

SOURCE: Timing Belt Tensioner bolt broken off.

if this happened you bent the valves in the engine and the cylinder head must be removed, here are full instructions for a timing belt replacement.

Required tools:
13mm open end wrench 10mm shallow and deep socket 8mm socket long flathead screwdriver 17mm deep socket T50 torx socket 1/4", 3/8ths and 1/2" ratchets and extensions E10 inverted torx sockets 6mm Allen wrench 15mm open end wrench 7mm socket 12mm open end wrench 14mm socket 12mm socket 8mm, 9mm and 10mm Allen head sockets 19mm socket pry bar needle nose pliers
If you are doing this because your timing belt broke you will also need to buy a complete cylinder head, head gasket set, and both idler pulleys. ALL DAEWOO MODELS WILL BREAK THE INTAKE AND EXHAUST VALVES WHEN THE TIMING BELT BREAKS.
Start by removing the air cleaner assembly from the throttle body, remove the air filter and housing jack up the vehicle and remove the wheel, remove the plastic shielding in front of the accessory drive belt assembly, remove the accessory drive belt, place a jack with a block of wood on top underneath the engine oil pan remove the front engine mount, remove the crank shaft pulley ( the 4 Allen head bolts only not the 17mm bolt in the center.) remove the metal plate behind the engine mount bracket on the engine, remove the plastic timing belt cover 3 clips on top 2 10mm bolts on bottom. Rotate the engine until the #1 cyl. is at Top Dead Center on the compression stroke or line up the crankshaft timing mark with the mark on the inner timing belt cover ( notch in cover with notch in pulley) on the camshaft pulleys -- ( intake cam line up the line on the pulley with the line on the inner cover)( exhaust cam line up the arrow on the pulley with the arrow on the inner cover) loosen the 13mm bolt in the belt tensioner and using the Allen wrench rotate the tab until there is slack in the belt. Remove the belt. At this time I would recommend you replace the water pump, both plastic idler pulleys as they tend to overheat and lockup, and the belt tensioner. Make sure all your marks are lined up, you may need a helper to hold the Exhaust Cam in place as it tends to move during belt installation. Put the timing belt underneath the crankshaft pulley, install the belt leaving the intake cam for last and NO BELT SLACK on the right side between the crank and the exhaust cam. Once the belt is installed rotate the crankshaft over 2 revolutions and make sure is rotates freely, and your timing marks are aligned perfectly if not the engine will not run properly, tension the belt as needed. Installation is the same as removal.

To clarify, on the DOHC engine, the intake cam gear has a line on it, and the exhaust cam gear has an arrow on it. These should be lined up with the corresponding line and arrow on the VALVE COVER, pointing straight up. I just went through this process over the weekend, and spent quite a bit of time looking for these marking as I had removed the valve cover. Once I found them, it was plain and simple.
In addition, be sure to not over tighten the belt when reinstalling. The tensioner has markings on it for "old" and "new". DO NOT adjust past "new", as the car will sound like a jet engine, and the belt will not last for very long.
One more item that you may as well replace while you are in there is the cam position sensor if you have not already, as there have been issues with them, and the timing housing has to be opened to get to it

Posted on May 26, 2009

  • 12 Answers

SOURCE: 2003 Tahoe (5.3). AC belt/tensioner/compressor (Chatters)

The compressor is bad. I have the same problem. Apparently none of the tahoe's compressors are worth a ****! im having to replace mine too. You have to change the compressor, the accumulator/dryer, orifice tube and flush the lines. If you look on ebay you can buy a complete kit to change it all for about 300 bucks. The dealership tells me that you need to change the fan clutch as well. They told me that the reason for the noises is the fan clutch isnt working properly and it lets the compressor get too hot causeing higher pressures in the compressor due to the heat. They called it liquid slugging I believe. Mine doesnt break the belt but when you give it very much gas it makes a squeal and then a grinding noise like your trying to put a standard transmission in gear with it running without pushing in the clutch. I asked if you could just change the fan clutch and they told me no its too late, you have to change the compressor and dryer/orifice tube.

Posted on Jun 23, 2009

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