Re: how to replace belt tension pulley for dodge neon...
The power steering and A/C belt is tensioned by a tensioner pulley. Mine went bad and was "screaming" I thought it was the power steering pump and I replaced it only to find that it wasn't the problem. I couldn't find any bolts and deemed it too much of a problem for me to replace at home. The shop had to drop the engine and transaxle assembly from the engine bay in order to get enough room to replace the pulley. The problem with many FWD cars is having enough room to work so if you have to replace it, the engine has to move because you only have about two inches of room otherwise.
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Unless you have damaged or disconnected some electrical component in the engine bay whilst you were working on the car there should be no connection between the car not starting and the work you carried out. Just replacing the belt tensioner unit and refitting the serpentine belt correctly would have no impact the the starting condition of the engine. If you have removed and refitted other components on the engine to get access to the tensioner unit or the belt I would very carefully go back over your work.
You don't say in your post if the engine is cranking and not starting or if you have a no crank/no start condition.
remove the belt, then remove the pulley, you may need a tensioner bar or sometimes a 3/8 ratchet will fit. when you instal the new one there may be a keyway or alignment dowel, besure it slides into place before tightening it down
it sounds like you have a pulley alignment problem with one of the pulleys.did you have any left over washers or spacer not put back.the other problem is the belt tensioner may be worn and need replacing.these are the usual things that cause a belt coming off.if the belt is not on all the pulleys correctly it can throw a belt also.make sure there isn`t something(like a part of the timing cover)sometimes it doesn`t take much to cause this.
You will have to go to the tensioner pulley and put a wrench on that bolt and apply presure in the allowed direction and take the belt off...look first to see if there is a diagram of how the belt goes back on if there isn't write one down before you take the belt off...might be a good time to inspect the belt for cracks and replace as needed.
You need to locate the tensioner pulley.Need to pull tensioner forward.There will be some resistance.If you can get that forward the belt will come right off. Just remember the belt route when you do it.
Make sure you locate the Serpentine Belt Routing Sticker before you proceed. If not make an excellent drawing and take a GOOD Picture. Do NOT try to just remember how it goes back on Should be a 15mm wrench to loosen tensioner to remove belt. Locate mounting bolts to tensioner and remove, replace with NEW tensioner tighten bolts then use wrench arc torque about 15 degrees should snug it down, reroute belt then using 15mm pull tensioner to either side of belt to install belt in correct route. Remove all tools and body parts from engine bay. Do not start engine if anyone is in the vicinity of engine bay. Belt may fly off if you did not do it right and cause all kinds of shrapnell, if it doesn't fly off, visually inspect belt before starting and after, I would suggest being very careful before during and after starting to insure safety.
There should be some bolts that hold the pulley on to the motor. Check behind the bracket, I believe they are the bolt size of 9/16. If you are trying to get the serpentine belt off, you can also just have someone hold the pulley away from the belt as you maneuver the belt off the pulleys.
Hope this helps!
You cannot tighten the belt. It is the Tension arm/pulley's job to do so. If the belt is loose, then it either means the belt needs to be replaced, its the wrong belt, its routed wrong, or the tension pulley/arm is bad.
SERPENTINE BELT TENSIONER?IT IS PART OF FRONT ENGINE MOUNT BRACKET ASSEMBLY..YOU MUST REPLACE FRONT BRACKET/TENSIONER AS A COMPLETE ASSEMBLY..IT'S A BIT OF WORK..YOU HAVE TO REMOVE P/S PUMP,BOTH BELTS,UPPER ENGINE TORQUE STRUT,LOWER ENGINE TORQUE STRUT AND CRANKSHAFT PULLEY..AS FAR AS I KNOW IT IS A DEALER PART