305 tho runs great cold, rough idle, sometimes dies when warm
#1
Junior Member
Thread Starter
Join Date: May 2019
Location: Bismarck ND
Posts: 5
Likes: 0
Received 0 Likes
on
0 Posts
Car: 92 Firebird Formula WS6
Engine: 305
Transmission: Auto
Axle/Gears: 373, I’m guessing
305 tho runs great cold, rough idle, sometimes dies when warm
I have a 92 Firebird Formula with 305 Tbi. It starts and runs nice when cold, although does idle kind of high. After reaching operating temp it still runs good until it is shut off. Upon restarting it idles like crap, sometimes dies. After reving it a few times it seems to straighten out but it is getting worse. Is anyone familiar with this problem and if so where do I start, thanks.
#2
Re: 305 tho runs great cold, rough idle, sometimes dies when warm
When was the last time you cleaned the throttle body and the idle air passage?
When was the last time you connected a scan tool and looked at the data stream?
When was the last time you connected a scan tool and looked at the data stream?
#3
Junior Member
Thread Starter
Join Date: May 2019
Location: Bismarck ND
Posts: 5
Likes: 0
Received 0 Likes
on
0 Posts
Car: 92 Firebird Formula WS6
Engine: 305
Transmission: Auto
Axle/Gears: 373, I’m guessing
Re: 305 tho runs great cold, rough idle, sometimes dies when warm
I haven’t done either of those things, I haven’t had the car for very long. Thanks for the ideas now I have a place to start
#4
Supreme Member
Join Date: Jul 2000
Location: Where the chicks absolutely LOVE the V-8 rumble!
Posts: 1,341
Likes: 0
Received 0 Likes
on
0 Posts
Car: 92 RS - Fully Restored w/Custom Int
Engine: LO3 with some mods
Transmission: T-5
Axle/Gears: 3.42 Richmond
Re: 305 tho runs great cold, rough idle, sometimes dies when warm
Check the other thread where I explained how a bad fuel pump/inlet hose was the problem in my case.
#5
Supreme Member
iTrader: (1)
Re: 305 tho runs great cold, rough idle, sometimes dies when warm
I have a 92 Firebird Formula with 305 Tbi. It starts and runs nice when cold, although does idle kind of high. After reaching operating temp it still runs good until it is shut off. Upon restarting it idles like crap, sometimes dies. After reving it a few times it seems to straighten out but it is getting worse. Is anyone familiar with this problem and if so where do I start, thanks.
#6
Junior Member
Thread Starter
Join Date: May 2019
Location: Bismarck ND
Posts: 5
Likes: 0
Received 0 Likes
on
0 Posts
Car: 92 Firebird Formula WS6
Engine: 305
Transmission: Auto
Axle/Gears: 373, I’m guessing
#7
Re: 305 tho runs great cold, rough idle, sometimes dies when warm
can you tell me how you fixed the idling problem, my car turns on altho sometimes doesnt wanna crank anymore, once its on i have to keep it revved up so it doesnt turn back off. can you give me any ideas of what it might be?? by the way i have a 84 z28 camaro
Trending Topics
#8
Junior Member
Thread Starter
Join Date: May 2019
Location: Bismarck ND
Posts: 5
Likes: 0
Received 0 Likes
on
0 Posts
Car: 92 Firebird Formula WS6
Engine: 305
Transmission: Auto
Axle/Gears: 373, I’m guessing
Re: 305 tho runs great cold, rough idle, sometimes dies when warm
I just installed a Tbi rebuild kit from Napa, while the unit was apart cleaned it real well, cleaned iac, then went through the idle reset process and now everything seems good
#9
Junior Member
Thread Starter
Join Date: May 2019
Location: Bismarck ND
Posts: 5
Likes: 0
Received 0 Likes
on
0 Posts
Car: 92 Firebird Formula WS6
Engine: 305
Transmission: Auto
Axle/Gears: 373, I’m guessing
Re: 305 tho runs great cold, rough idle, sometimes dies when warm
Thread
Thread Starter
Forum
Replies
Last Post
Lck119
Tech / General Engine
1
10-06-2014 01:52 PM
Irocz_89
Tech / General Engine
7
06-10-2011 06:47 PM
Matt1821
TBI
3
03-02-2011 12:01 AM