Possible starter issue

[gw33gp]

When I start my 4.0 SOHC engine, I get a little rattle after it starts that sounds like it is coming from the starter. It is very brief and doesn't sound serious. It seems like the starter gear is slow to disengage or is rattling a little as it slows down.

Has anyone come across this issue? It has been doing it for about a month and is not getting any worse. Should I be concerned and rush out to get a new one? It is the original starter with over 295K miles on it.

Normally, I would just replace it, but I don't think I can get it out without removing the transmission. Even then I don't think it will be easy to get out. It is in a tight area.

 

[Uncle Gump]

The starter comes out... pretty tight working above the front diff.

You certain the noise is starter? Those timing chain tensioners if weak will sound like a 2 second drum roll on a snare drum on a cold start until oil pressure pumps them up.

 

[Uncle Gump]

A simple test to rule out a chain tensioner...

Pull the fuel pump relay on a cold start.

Crank engine a couple times to ensure oil has made its way up to pressurize the tensioners.

Plug fuel pump relay back in.

Start normally.

If rattle goes away upon start up... weak chain tensioner.

Still rattling... likely to be elsewhere.

 

[Broosedamoose]

You could also push the accelerator to the floor before cranking which will turn off the injectors instead of pulling the fuse.