2.5L vibrates

Reply Subscribe

Thread Tools

Search this Thread

Aug 24, 2005 | 11:42 PM

apropos

Thread Starter

Senior User

Joined: Oct 2004

Posts: 247

Likes: 2

2.5L vibrates

I got a Mazda 626 with 2.5L V6 (basically identical to Ford Probe)

I recently changed the timing belt and the water pump. After this work, the engine shakes in "D" when parked. It does not vibrate in any other gear. It runs well on highway. Nothing else is abnormal.

When I installed the timing belt, I was off by 1 tooth on the Camshaft. Could this be the problem?

Or is it the engine mount? It looks OK.

Or the Harmonic Balancer?

Please advise, I don't know what to do. Hopefully I won't have to take the whole thing apart again.

Aug 25, 2005 | 01:49 PM

AlfredB1979

Posting Guru

Joined: Jul 2003

Posts: 1,978

Likes: 1

From: Alvin, Texas.

Well, if the problem occured after work you did, that would tend to make me believe that's where you need to start from.

Being off by 1 tooth = you may as well never have put things back together.

Good luck.

Aug 28, 2005 | 09:44 AM

apropos

Thread Starter

Senior User

Joined: Oct 2004

Posts: 247

Likes: 2

It runs well, and has full-power at highway speeds.. strange.

I am thinking engine mount or more likely a spark plug wire, I pulled it to check TDC on cylinder #1....

Aug 28, 2005 | 10:12 AM

RyanMiller

Elder User

Joined: Jul 2004

Posts: 715

Likes: 0

From: Long island NY

Depending on how big the teeth are on the belt, you seem to have gotten lucky that you didnt damage your head/valves. Id put the belt back one notch where it should be.

Aug 28, 2005 | 11:20 AM

go_racing84

Laughing Gas

Joined: Aug 2004

Posts: 964

Likes: 1

From: Roseburg, OR

It runs fine at highway speed, probably because you advanced your cam timing a little. I would say it's 99% that not getting the cam gear aligned right is your problem.

Aug 28, 2005 | 01:56 PM

ericsmith32

Elder User

Joined: Feb 2005

Posts: 549

Likes: 0

From: Kansas City, KS

If you don't have to belt aligned right your timing will be off. But just setting the timing won't be enough, double check the belt. If it's correct have the timing set. Alot of mazda's engine are non-interference but I can't be certain on this model.