What Could it be?
Thread Starter
Junior Member
Joined: Feb 2010
Posts: 95
Likes: 0
From: South Carolina
Car: 88 GTA
Engine: 305 TPI
Transmission: 700 R4
Axle/Gears: stock
What Could it be?
I've a 88 GTA with a 87 TPI. Between 1500 and 1800 rpm it has a flutter spot, sometimes as low as 1200.
I've replaced the TPS, the throttle body, all ignition parts. Checked the fuel pressure (45) sprayed carb cleaner everywhere no change in idle, it throws no codes. Once past this flutter point (just giving more throttle will get it past it) it runs fine. New MAFS too.
WOT never has the flutter and just runs great.
Any thoughts or ideas?
thanks in advance,
Robert
I've replaced the TPS, the throttle body, all ignition parts. Checked the fuel pressure (45) sprayed carb cleaner everywhere no change in idle, it throws no codes. Once past this flutter point (just giving more throttle will get it past it) it runs fine. New MAFS too.
WOT never has the flutter and just runs great.
Any thoughts or ideas?
thanks in advance,
Robert
Last edited by rrwebster; Oct 3, 2010 at 02:24 PM. Reason: added something.....
Senior Member
iTrader: (2)
Joined: Feb 2004
Posts: 697
Likes: 1
From: Kalamazoo
Car: 89 iroc
Engine: 355 TPI FINALLY
Transmission: 700r4/ SHIFT KIT
Axle/Gears: 3.42
Re: What Could it be?
I AGREE....need help please....same here
90 5.7
If I hammer on it...runs fine....only at normal take offs from a stop...kinda a dead spot
90 5.7
If I hammer on it...runs fine....only at normal take offs from a stop...kinda a dead spot
Thread Starter
Junior Member
Joined: Feb 2010
Posts: 95
Likes: 0
From: South Carolina
Car: 88 GTA
Engine: 305 TPI
Transmission: 700 R4
Axle/Gears: stock
Re: What Could it be?
I'm thinking that I just need to bite the bullet and pull the top end... replace all the vacuum lines and gaskets. Since I've replaced the TPS sensor, the Throttle body, the MAFS there has to be some kind of leak someplace that I can't see. I did get a couple of scan codes the last time I drove it. One for the MAPS and one for the O2 sensor... will follow those two first but I don't think they could be causing this.