DBD
New Member
- Joined
- Feb 15, 2011
- Messages
- 19
- Reaction score
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- Location
- Saskatoon, SK
- Transmission
- Manual
I dunno maybe his is a better fit in exhaust, but I put it here because of how it may be effecting the engine.
I have a 93 supercab 4x4, 3.0L 5-speed. It makes the weirdest sound. After getting warm, there is a "THUNK.... THUNK. THUNK" from under the floorboards. I gotta think it's coming from the catalytic converter. You can feel it, as if there's a guy under the truck lightly kicking at the underside of the floor. I assume it is happening while driving as well, but typically I notice it when stopped at a light. It also does it (briefly) after stopping and cutting the ignition.
I have been sorting through several things so far to get this thing running right. Ran some sea foam through, and some injector cleaner, put my K&N in from the other truck, and also cleaned the MAF. Each of those things perked it up a little bit, but there is still a lot of hesitation to the engine.
What are the symptoms of a plugged up cat? Is That what I've got? I wanna say it's fouling the plugs, but I have not pulled them to see. I have stalled it a couple times when it hesitates, and then it is tons of cranking before it will start.
Ideas??
I have a 93 supercab 4x4, 3.0L 5-speed. It makes the weirdest sound. After getting warm, there is a "THUNK.... THUNK. THUNK" from under the floorboards. I gotta think it's coming from the catalytic converter. You can feel it, as if there's a guy under the truck lightly kicking at the underside of the floor. I assume it is happening while driving as well, but typically I notice it when stopped at a light. It also does it (briefly) after stopping and cutting the ignition.
I have been sorting through several things so far to get this thing running right. Ran some sea foam through, and some injector cleaner, put my K&N in from the other truck, and also cleaned the MAF. Each of those things perked it up a little bit, but there is still a lot of hesitation to the engine.
What are the symptoms of a plugged up cat? Is That what I've got? I wanna say it's fouling the plugs, but I have not pulled them to see. I have stalled it a couple times when it hesitates, and then it is tons of cranking before it will start.
Ideas??