Car running rough under power....
Thread Starter
Member
Joined: Jul 1999
Posts: 146
Likes: 0
From: Indianapolis, IN
Car: 1991 Firebird
Engine: 412ci/sb
Transmission: Built 700R4
Car running rough under power....
When I put the car under power, car bucks and sounds like it is missing real bad. Then it smoothes out and goes. This morning the car actuallly loaded up then died...then started back up...last time it did that it knocked the coil out and would not start. Coil has been replaced by same oem speck. Sounds to me like it is not mechanical but rather electrical...What are you guys' thoughts?
------------------
91 Firebird 305/TBI - cam:.420/.442 204/214 - Hooker 1 5/8" headers - TFX PaceSetter Cat-Back - 3.42's Auburn Pro Posi - ASCD Ram-Air hood - Polished Formula Wheels w/Futura's - Open element - .5" Corian TB spacer - Lakewood LCA's - Hotchkis Lowering Springs - KYB Struts/Shocks - 14.78 @ 97.5 mph(G-Tech) - MacEwen MotorSports Whiteface Overlays - 412ci sb waiting to go in this spring.
My Homepage
------------------
91 Firebird 305/TBI - cam:.420/.442 204/214 - Hooker 1 5/8" headers - TFX PaceSetter Cat-Back - 3.42's Auburn Pro Posi - ASCD Ram-Air hood - Polished Formula Wheels w/Futura's - Open element - .5" Corian TB spacer - Lakewood LCA's - Hotchkis Lowering Springs - KYB Struts/Shocks - 14.78 @ 97.5 mph(G-Tech) - MacEwen MotorSports Whiteface Overlays - 412ci sb waiting to go in this spring.
My Homepage
Senior Member
Joined: Mar 2000
Posts: 976
Likes: 0
From: orchard park, NY, USA
damn i hate problems like that man. Ur best bet is just to have it put on a machine. On a problem like this u could spend alot of money trying to chase it down. It would only cost u about 60$ and it could potentially save alot of money. Probably not what u wanted to hear but its always a thought.
------------------
1989 pontiac firebird
bright red exterior(just repainted)
grey interior
5 spd
305 TBI (stock)
WS.6 formula wheels
3.73 posi rear end
-------------------------
system: 2 10" MTX thunder 2000 in a Professionally done custom bandpass box.
Blaupunkt CD player
Blaupunkt 4x6 and 6x9
600 watt rockford fosgate 4.6 amp
thinking about a flowmaster
------------------
1989 pontiac firebird
bright red exterior(just repainted)
grey interior
5 spd
305 TBI (stock)
WS.6 formula wheels
3.73 posi rear end
-------------------------
system: 2 10" MTX thunder 2000 in a Professionally done custom bandpass box.
Blaupunkt CD player
Blaupunkt 4x6 and 6x9
600 watt rockford fosgate 4.6 amp
thinking about a flowmaster
Thread Starter
Member
Joined: Jul 1999
Posts: 146
Likes: 0
From: Indianapolis, IN
Car: 1991 Firebird
Engine: 412ci/sb
Transmission: Built 700R4
Thanks, that is always my last resort. My labor is much cheaper...and the car is modified too much the "machines" don't like that.
Moderator
Joined: Jul 1999
Posts: 2,184
Likes: 0
From: Tempe, AZ
Car: 92 RS, 02 Tacoma, 2 73 Porsche 914s
My car does that when still cold, I think what happens is the computer has calculated to much, momentarily, for a the colder air's density and floods the cylinders, making it hesitate, rev up miss for a second, then smooth out after the computer gets things back undercontrol.
I think, being the key words here.
------------------
Gestapo?
ENGINE SPECS:
305 TBI,Open Element,K&N 14x3,Hypertech Stage I,160 Deg. Thermostat,454 GM TBI
STEREO SPECS:
JVC Kalmeleon kdlx3,Infinity Kappa 2way 6x9's,PPI 4x6 Coaxials,PPI PC2400 AMP @ 2ohm
DEI Studio 12" 4ohm DVC,Custom Box:Exactly 1 Cubic Foot
I think, being the key words here.
------------------
Gestapo?
ENGINE SPECS:
305 TBI,Open Element,K&N 14x3,Hypertech Stage I,160 Deg. Thermostat,454 GM TBI
STEREO SPECS:
JVC Kalmeleon kdlx3,Infinity Kappa 2way 6x9's,PPI 4x6 Coaxials,PPI PC2400 AMP @ 2ohm
DEI Studio 12" 4ohm DVC,Custom Box:Exactly 1 Cubic Foot
Thread
Thread Starter
Forum
Replies
Last Post