hi all,

i tried to do a search but couldn't find anything, i just noticed when driving and rpm is around 1500 i seem to get a strong vibration but clear of 1500 its fine.....is it possible to have a flat spot

there was no loss of power just a vibration

 

I'm not entirely clear on the symptom, as "rough engine" and "engine vibration" are different things to me.

So, does it feel like something is out of balance (vibration) or does it feel like the engine is misfiring/cutting out (rough engine)?

If you rev the engine to 1500rpm in neutral do you still feel it?

There is no road speed aspect to this? Purely an engine speed thing?

Cheers
DD

 

Yes i get the same result in Neutral as well as will on the road with engine running at 1500rpm, and yes i guess rough was a bad term . vibration would be more correct

 

Quick engine mount check for starters. Verify they do not appear to be torn/seperated and that they are still bolted to the engine - 1/2 inch nut I think on both. I saw a video where the mounts had loosened up (Nut was actually gone...) and the engine actually shifted some causing a vibration.

 

Good advice on checking the mounts

Add transmission mount to the list, though. The the mounts collapse the transmission can become grounded to the main mount bracket and transmit vibrations into the body.

There's a "tongue" that runs below the transmission mounting. It need to be parallel with the transmission. Use the transmission pan for a sight line. If it isn't, the mounts are sagging

Cheers
DD