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Need Help, Cat prob?

Old Aug 19, 2004 | 09:01 AM
  #1  
serpentineocean's Avatar
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Joined: Feb 2004
Posts: 267
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From: HHI, SC
Car: 1986 Vert Z28
Engine: SuperCharged 350
Transmission: 5 Speed Manual
Need Help, Cat prob?

Symptoms at start:
- Drove w/ little power, the more i drove the slower it would go. Hardly any throttle response. ALSO after it got bad the engine would 'pulse' and with the engine the car would 'pulse' w/ power (like it was trying to go, but couldn't)

Symptoms recently:
- At idle the car chugs and 'wobbles'. Also Noticed that hooker muffler wasn't very loud, checked and noticed very little air getting through. ALSO pulsing is alot worse. ALSO if i drop it down a gear, the engine might rev up, but the car slows down (only going about 15 mph, slows down to 10 or somptin)

NOTES:
-Couple weeks before this started i installed a whole new suspension, along w/ sub-frame connectors. The 'cat' hits against the SFC on bumps pretty hard.

My Thaughts:
- First i was sure it was tranny, But w/ little exauhst pressure i'm thinking it's either a busted Cat, Bad ECM, and/or Tranny. Or combination.
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Old Aug 19, 2004 | 09:26 AM
  #2  
sqzbox's Avatar
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Joined: Jun 2003
Posts: 1,054
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From: Ft. Branch, In.
Car: 88 formula WS6
Engine: 305 Lo3
Transmission: 700-R4
Probably, all that banging around has loosend all that old carbon up and pluged the cat !
Why not try punching the screen out and gutting the cat and see if it helps? Shore wouldn't hurt to try.
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Old Aug 19, 2004 | 09:30 AM
  #3  
serpentineocean's Avatar
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Joined: Feb 2004
Posts: 267
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From: HHI, SC
Car: 1986 Vert Z28
Engine: SuperCharged 350
Transmission: 5 Speed Manual
Yea, I'm doing that tonight. Just wanted to get a feel to see if anyone had any ideas that it might be somthing else.
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