Rough Engine
Amateur
Joined: Jan 2009
Posts: 30
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Q888,
I had a slight (felt like misfire) shuddering, shaking at around 1500 rpm ('95 with 5.2 and no cat) just like you are describing. This is after I changed a non-working injector. I put a can of seafoam in my FULL tank of gas and now I am just below 1/2 tank and the truck runs GREAT. Have you tried this?
Laters
Joe
I had a slight (felt like misfire) shuddering, shaking at around 1500 rpm ('95 with 5.2 and no cat) just like you are describing. This is after I changed a non-working injector. I put a can of seafoam in my FULL tank of gas and now I am just below 1/2 tank and the truck runs GREAT. Have you tried this?
Laters
Joe
Thread Starter
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Registered User
Joined: Feb 2009
Posts: 15
Likes: 0
Fixed the shutter (read: vibration shaking).
Harmonic Balancer (vibration dampener) $89.95 OEM Part
Front Crankshaft Seal (while I was there) $12.89 OEM Part
Took me about 2 hours and less than a six pack.
No more shutter, shake, vibration, or misfire feeling.
What a great feeling. I was really starting to get annoyed with this and imagining the worst. Trans going out, torque converter problems, cracked head, and you name it. Glad it was something simple.
I diagnosed this by removing the serp belt which disabled the accessories then started the engine for a minute. Engine still exhibited shutter so I shut it off and got under the front end to inspect the main drive pully assembly and harmonic balancer. I found with a strong enough grip on the drive pully I could get the balancer to spin without turning the engine.
Harmonic Balancer (vibration dampener) $89.95 OEM Part
Front Crankshaft Seal (while I was there) $12.89 OEM Part
Took me about 2 hours and less than a six pack.
No more shutter, shake, vibration, or misfire feeling.
What a great feeling. I was really starting to get annoyed with this and imagining the worst. Trans going out, torque converter problems, cracked head, and you name it. Glad it was something simple.
I diagnosed this by removing the serp belt which disabled the accessories then started the engine for a minute. Engine still exhibited shutter so I shut it off and got under the front end to inspect the main drive pully assembly and harmonic balancer. I found with a strong enough grip on the drive pully I could get the balancer to spin without turning the engine.
