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Re: Charging & Brake lights flash, belt is intact...
Suggest replacing alternator if charging is an issue, also the battery as a bad cell will normally kill the regulator due to non stop charging condition.
if your idler pulley is squealing get it replaced before that belt locks up, cuts loose and hurts stuff under your hood. At 2000-4000 rpm that belt will grab and wrap up alot of things very quickly if it wants.
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Belts should have a half inch of play on the longest distance between pulleys...when you push down on it with your finger...not too tight or too loose.
Check the tensioner pulley and others for wear in the bearings as they can wear and fall apart...
Check for shiny spots on the belts for wear..also, Usually a bad or failing idler pulley will produce a few symptoms that can notify you of an issue.
Visibly worn pulleys. One of the first symptoms of an issue with an idler pulley is visible wear on the pulley. ...
Belt squealing. ...Damaged bearing or pulley. Like the belt tensioner pulley, it's designed to remove that annoying belt vibration that's caused by excessive belt slack. The only difference between them is that the tensioner is mounted on an adjustable bolt, while the idler pulley isn't..... cheer's
Jul 2, 2014 - Uploaded by nivekoch
How to Replace serpentine belt 2008 Nissan Altima In this video i'll be going ... 2005 Nissan Altima 2.5L serpentine belt tensionerreplacement ...
Hi, there should be marks on the belt itslf that align with hatch marks on the timing gears. Below are the instructions for installation. From these, you should be able to verify that the belt is in time. There are also some diagrams here: http://www.2carpros.com/diagrams/cadillac/catera/1997
Install the timing belt.
Start at the crankshaft pulley.
Install the timing belt with a double dash (TDC) mark on the belt aligned with the marks on the oil pump and belt drive gear.
Pinch the belt with special tool J 42069-30 to prevent the splines from jumping.
Route the timing belt through the idler pulley for camshafts 3 & 4 then route the timing belt through the camshaft gears 3 & 4.
Ensure the dash marks on the timing belt align with marks on the camshaft gears and the notches on the rear timing belt cover.
If necessary, loosen timing belt idler pulley or move the cam gears slightly, with J 42069-1 and 2 still in place, until the timing belt can be installed.
Tighten the idler pulley locking bolt until snug. The idler pulley bolt will be tightened to specifications after the final adjustments are made.
Timing belt deflection between the camshaft gears number 4 and the idler pulley for camshafts 3 & 4, must be no more than 0.4 inch (1 CM.).
If necessary, adjust the timing belt deflection by turning the timing bolt idler pulley eccentric, for camshafts 3 & 4, counter-clockwise with the special tool J 42069-40, or equivalent.
Route the timing belt through the timing belt idler pulley for camshafts 1 & 2 then route the timing belt through camshaft gears 1 & 2.
Ensure the dash marks on the timing belt align with the marks on the camshaft gears and the notches on the rear timing belt cover.
If necessary, loosen the timing belt idler pulley or move the cam gear slightly, with J 42069-1 and 2 still in place, until the timing belt can be installed.
Apply sufficient tension to the timing belt to prevent it from slipping off the gears by turning the timing belt idler pulley eccentric for camshafts 1 & 2 counter-clockwise with special tool J 42069-40 or equivalent.
Tighten the idler pulley locking bolt until snug. Idler pulley bolt will be tightened to specifications after final adjustments are made.
Route the timing belt through the timing belt tensioner.
Apply initial tension to the timing belt by turning tensioner eccentric counter-clockwise, with a 5 mm hex wrench, until marks are set.
Tighten the belt tensioner-locking nut to 15 ft. lbs. (20 Nm).
Adjust the timing belt.
The timing belt must be properly adjusted or engine damage may occur. Do not continue with the engine assembly procedure until the timing belt is properly adjusted.
Install the timing belt cover. Tighten the timing belt cover bolts to 71 inch lbs. (8 Nm).
Install the power steering pump pulley and bolts. Install the water pump pulley and bolts.
Tighten the power steering pump pulley bolts and the water pump pulley bolts after the serpentine drive belt is installed.
I just had my AC condenser pump realigned for the same belt noise issue. They also discovered the bolts holding the condenser in place were stripped out from the previous owner. I now have no belt noises! I had replaced the idler and bearing and have been through 3 belts before we figured this out!
Check your idler pulley(s) & serp. belt, alternator & lastly your timing belt idler. Squeeks generally signal impending bearing failure. With the engine running, turn on your lights: if it goes away or gets worse, most likely its the alternator. If it stays, could be the serp. idler. Using a long screwdriver, press the tip against the alternator frame and idler support and press your ear to the other end. Its crude, but it does work...should be able to get closer to the source. If you need to replace parts, start with the idler & serp. belt, then alternator (you might be able to have it rebuilt for a fraction of the cost) and lastly timing belt & idler.