[my87custom]

1987 4.3 L v6. Bone stock. When the car is idling, warmed up, it seems that the car, cab and all, start to shake. enought to make my drink holder(where the stock ash tray goes) rattle.

Not entirely sure if this is normal. But ive seen similiar things happen in other vehicles that enter the shop, that have worn out mounts.

upgrading to a more powerful v8 soon,will be getting new mounts, so i can live with it. but i was just curious.

it only happens when at idle, or RIGHT on pedal when launching, but in gear while moving, it is completely fine.

any insight will be nice. Thanks !:beer:

 

[my87custom]

I forgot. Just reached 150,xxx. The car has been babied its whole life. thanks :nanawrench:

 

[ccc]

most likely worn mounts. i change mine at about 70,000 when they just start to sag

 

[JJLT1]

i dont think the mounts are causing the shake,,worn mounts wiill let it shake more from a different problem..
probly low idle and/or a miss,,may need a tune up..:texas:

 

[ccc]

you guys need to remember the 4.3 isnt the smoothest running engine because of the odd configuration. they dont idle the smoothest and worn mounts only amplify it. the late 4.3 s use a counter balance shaft to smoth these engines out. at 150,000 miles its a safe bet the mounts are done. but certainly check the running condition of the engine. kinda like the carpenters creedo. measure twice cut once ,well in the mechanics world check twice and fix it once

 

[my87custom]

It idles fine. And I just did a full tune up. Cap, wires, spark plugs , oil, oil an fuel filters, and I did more, but I'm at lunch so can't remember everything.

But it's firing on all 6.

Thanks for all the help :$

 

[JJLT1]

touche CCC,, forgot about those,, never had one..:texas: