- Joined
- Jan 5, 2003
- Messages
- 3,807
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- 5,101
- Age
- 40
- City
- Medina, Ohio
- Vehicle Year
- 1992,1994
- Engine
- 4.0 V6
- Transmission
- Manual
- Total Drop
- 4/4, bagged
Sorry for the long thread..but theres a bit of explaining here.
I'm having a problem with power loss in my Buick Park Avenue.
2 months ago I changed the lower intake manifold gaskets because it had a coolant leak. While I had the supercharger off I filled in the silencer ports with JB weld. This is something that people do all of the time and no one has ever had a problem with it, it just makes the supercharger louder.
Immediately after I got the car back together, it had a miss and wouldn't rev passed 2000rpm. I changed the plugs and wires because they were original, plus it had a code of "misfire cylinder 1".
After plugs and wires it ran better, but now I noticed an issue where it will lose power after it shifts into 2nd gear. It runs fine all through first gear, but when it shifts into second there is a noticeable loss in power. I race the car now and then, and it is running a half second slower on the 1/4 mile because of this. Another little issue I've noticed along with this is when I'm driving along with the rpms about 1500 rpm, if I start going up a hill, the rpms will bounce between 1500-2000, just like a light fluttering. If I give it a little gas so it'll downshift its fine. I changed the coils thinking that may be the problem, but nope, still doing it.
Its been 32k miles since the trans fluid/filter has been changed. Could this be the problem? It would be strange though that it would start doing this after changing the intake gaskets.
I have no vacuum leaks, already made sure of that, I'm not losing any boost from what I can tell (8-10 psi according to the gauge I just installed). I'm really at a loss here.
I'm having a problem with power loss in my Buick Park Avenue.
2 months ago I changed the lower intake manifold gaskets because it had a coolant leak. While I had the supercharger off I filled in the silencer ports with JB weld. This is something that people do all of the time and no one has ever had a problem with it, it just makes the supercharger louder.
Immediately after I got the car back together, it had a miss and wouldn't rev passed 2000rpm. I changed the plugs and wires because they were original, plus it had a code of "misfire cylinder 1".
After plugs and wires it ran better, but now I noticed an issue where it will lose power after it shifts into 2nd gear. It runs fine all through first gear, but when it shifts into second there is a noticeable loss in power. I race the car now and then, and it is running a half second slower on the 1/4 mile because of this. Another little issue I've noticed along with this is when I'm driving along with the rpms about 1500 rpm, if I start going up a hill, the rpms will bounce between 1500-2000, just like a light fluttering. If I give it a little gas so it'll downshift its fine. I changed the coils thinking that may be the problem, but nope, still doing it.
Its been 32k miles since the trans fluid/filter has been changed. Could this be the problem? It would be strange though that it would start doing this after changing the intake gaskets.
I have no vacuum leaks, already made sure of that, I'm not losing any boost from what I can tell (8-10 psi according to the gauge I just installed). I'm really at a loss here.
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