I noticed the heater pipe that runs from the rear cross member going forward under the tank was a sagging a lot ! Got under there and indeed it was heavy felt like something was in there ..
After we got back in the week I pulled it apart , seems some squirrels have been busy hiding acorns in the pipe

Think they got in though the heat exchangers were on my van the elbow pipes from the fan on the alternator were missing , they are not missing anymore

Sent from my iPhone using Tapatalk