Question about 1995 Lexus GS 300

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Car states it's over heating when a/c is on

My car over heated due to tension pully , it was change with new belt. Now my meter from time to time states its over heating when it's not , but if i turn off the a/c the meter gos back down. what should i do? Nicole

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Check all fuses for ac, or heater. u could have a bad fuse. but also check water pump, radiator, make sure all bolts are on and tightly.

Posted on Jun 04, 2010

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After changed a new water pump,timing belt,idler pully,tensioner for 2004 lexus ls 430, when start engine has a noise look like from pully


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View of mark for timing belt.


hi from uk the cambelt/timing belt comes as a kit ie timing belt and tensioner cost £50 here in uk ? it is not too difficult diy job approx 2hours the engine must 1st be set to TDC number 1 firing then at this setting the cam cog mark is a hole drilling in the web of cog and should line up at 12 oclock upwards and using a mirror look thro drill hole and you will see a vertical notch/groove behind on font engineface this is correct mark the crank cog mark lines up with aother mark on engine front face at approx 12 30 pm oclock ? if now set you slacken tensioner bolts and push t/pully away to left from belt ? then remove belt next remove complete tensioner assy after undoing bolts then fit new tensioner push t/pully to left from belt run and lock bolt/s recheck t/marks then fit new belt from c/shaft in anticlockwise rotation when fitted release tensioner bolt and allow to tension belt push t/pully onto belt and lock up tensioner bolts20=27 Nm rotate engine manually for four turns then recheck marks ? should still aligne then re assemble torque crank bolt to =140-150 Nm A LITTLE HINT ? b4 you remove the water pump belt ? slacken thefour 10 mm headed bolts (spanner size) that secure w/pump pully to pump it will be easier to halt rotation of pully if you holt belt tight by hand this pully has to come off to remove c/belt covers same for power steer belt which is also driven from the w/pump pully the power steer pump slide adjuster has a 12 mm bolt you slacken and best done with open end spanner ? after slackening the pump mounting bolts/nuts underneath pump hope you can follow this info/tips wish you good luck from uk

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Need to change timming belt 1997 geo tracker


TIMING BELT CHANGE You should have some mechanical skills before attempting any engine maintenance! These are basic instructions, and you must knoe what you removed, when, and what order so you can reinstall them in order. First, you have to remove everything in the way! You need to remove the Fan, clutch, and shroud, pump pully & drive belts. Next, you need to remove the Crank Pully:

1. Crank Pully Bolt 2. Crank Pully 3. Center Bolt 4. 5mm Hex drive (used to remove pully bolts) Once the fan stuff, and pully(s) are removed, then you need to remove the Timing Belt cover:

Once the cover is removed, you will need to loosen the adjusting nut and pully bolt on the Belt Tensioner:
A. Adjust Nut B. Pully Bolt C. TENSIONER PULLY Once the the Adjust Nut, and Pully bolt are loose, move the pully as far towards the water pump as possible.
Then, you can slip the timing belt from the sprockets. Check the tensioner for roughness and excess play! DO NOT MOVE THE CAM OR CRANK SPROCKETS! IF you do, then you will have to line up the Crank and Cam for piston number one at Top Dead Center before placing the new timing belt on! Note the timing marks on the crank and camshaft sprockets. IF YOU MUST! Allign the Cam and Crank at piston#1, Top Dead Center before removing the belt. Each sprocket has a small hole, with a line through it, and there is a small groove or "V" it alligns with on the engine. Now, once the timing belt is off, look at your new timing belt. Older belts use the Squared off teeth, while new ones have the rounded teeth. Make sure you have the correct belt for your sprockets! Never reinstall a belt that is in questionable condition. BELT WEAR CONDITIONS
If there are Arrows on the belt, they must be pointing to the RIGHT when you put the new belt on the sprockets. If there isn't one, then paint one on, and place the belt back on the sprockets. The arrow will indicate to a mechanic, this is the way the belt must be put back on (if they replace any cam or crank oil seals). Slip the new belt onto the Crank sprocket. While maintaining tension on the side of the belt opposite the tensioner, slip the belt onto the Camshaft sprocket. Releace the Tensioner adjusting nut to allow spring tension against the belt. Temporarily reinstall the crank pully, taking care to align the notch in the pully with the raised area on the sprocket. Rotate the crank clockwise two complete revolutions. Recheck the alignment of the of the valve timing marks. If they do not align properly, loosen the tensioner, slip the belt off the crank pully, align the timing marks, reinstall the belt, and check alignment again. Tighten the tensioner nut, then the bolt. Reinstall all parts removed, in the opposite order, of course. Start the engine and allow to reach normal operating temp, then road test. THEORETICALLY, you should simply be able to replace the belt with the new one, and go, as long as you did not move any of the sprockets when removing or installing the belt. Most people do it this way, and do not test for alignment before replacing everything. When the belt wears, timing will be off, very little, and this is why you check alignment. The belt may have slipped a tooth, making the timing off. This is why the Cam and Crank sprockets must both align properly. An experienced person will do just that: Replace the belt, and go. It really isn't all that hard. It helps to have a second person around with some experience also.

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Remove water pump


Disconnect battery earth lead. Do not turn crankshaft or camshaft whn timing beld removed. Remove spark plugs to ease turning engine. Turn engine in normal direction of rotation (unless otherwise stated) Do not turn engine via camshaft or other sprockets. Observe all tightening torques. Remove engine, remve RH engine mounting. Remove auxiliary drive belts, water pump pulley, crankshaft pulley, timing belt upper cover, timing belt lower cover. Turn crankshaft clockwise to TDC on No. 1 cylinder, slacken tensioner bolts 5 & 6. Move tensioner away from belt and lightly tighten bolts. Remove timing belt. Remove water pump and replace with new one. Suggest to replace cambelt as well.
Installation
Ensure timing marks aligned3 & 4. Fit timing belt in anti-clockwise direction, standing at crankshaft sprocket. Ensure belt is taut between sprockets on non-tensioned side. Slacken tensioner bolt 5. slacken tensioner bolt 6. Allow tensioner to operate. Tighten tensioner bolt 6. Tighten tensioner bolt 5. Turn crankshaft on turn clockwise. Ensure crankshaft sprocket timing marks aligned 4.
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G4-N/G4-k: Tightening torque: 10-12Nm
G4EA: Tighten crankshaft pully bolt 9. Tighten torque: 140-150Nm.

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HOW TO CHANGE A/C COMP. BELT ON HYUNDAI XG 350


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1 Answer

On-line step by step guide to change timing belt.


this is the best guide/instructions I could find on the net and I do allot of this.
take the timing cover off the belt there should be a gear below the camshaft pully its a tensioner use a peice of chalk and mark the very top of the cam pully and the very bottom of the crank pully do your best not to turn them loosen the tensioner pully the belt will loosen up take it off put the new one on if you turned the pully put it back slowly tighten the belt when its tight if the pully turned when tightening pull the slack out by hand then tighten it both chalk marks should be lined up if they are start the car always unplug the battery first and dont rotate the pullys more than a few inches if nessacery when the belt is off you could cause damage to the valves

Feb 14, 2009 | 1998 Honda CR-V

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