while idling

[johnjohn68]

My kia sedona is making a rattling noise while idiling periodically. It will sound fine then it will go ugly then fine then ugly and so forth. This is while i warm it up. I can`t tell if there is a problem when i am driving it. I had the timing belt replaced some time ago. t is now at 66k miles. It is a strange situation as it is sporatic. Has anyone expirienced thgis and if so do you know the outcome. I have an extended warranty of 100k 10 years. I fight tooth an nail for any work done with the extended warranty. I will never pay extra again. warning lights should be going of in your head when the manufacturer will not sell you an extended warranty directly. When they offer a third party warranty just say no and ewonder why they will not sell it through the actual manufacturer.

[cjmck422]

Next time the van is in for service, have them check the crankshaft pulley. If the rubber insulator between the inner hub and outter pulley is cracked/deteriorated it can cause this type of situation. Worst case scenarior is the outter pulley is completely separated from the inner hub. This may cause a "wobbling" appearance to the crank pulley and possible belt slippage. Good luck, I hope this helps you out