DODGE RAM FORUM - Ram Forums & Owners Club! - Ram Truck Forum - View Single Post - Brand NEW 2010 Hemi Sport not happy
View Single Post
Old 06-27-2010, 10:16 AM
HoustonHemi's Avatar
HoustonHemi HoustonHemi is offline
Dodge Ram Forum Senior Member
Join Date: Jan 2010
Age: 52
Posts: 1,378
Gender: Female
Vehicle: 1492 Santa Maria
Color: Hot pink
Engine: 1981-1987 225ci (3.7L) Slant-6 95hp
Rep Power: 9
HoustonHemi will become famous soon enoughHoustonHemi will become famous soon enough

Originally Posted by 2010BHDodge View Post
I've seen two other 09 hemis do this. A dealer told me it was "piston slap" on startup but that doesn't sound right. I would suspect more to do with lubrication - either the light oil or if there is the check valve problem as mentioned in earlier posts.
I had what I thought was piston slap on a Silverado once... BUT, I was able to fix it,,,

Long story short, a knock sensor (and the wiring to the sensor) under the intake manifold was going out, and it pulled the timing out of kelter,,,

The knock would go away a few seconds after start up.

It knocked (occaisionaly) for months,,, Finally, the sensor 'died' and activated the MIL.

Read code, replaced sensor, knock gone.
Reply With Quote