Car won't start if I don't give it throttle...
Thread Starter
Member
Joined: Jul 2017
Posts: 119
Likes: 6
From: St. Louis, MO
Car: 1989 Chevy Camaro RS
Engine: 305 TBI
Transmission: 700R4
Axle/Gears: 2.73 Posi
Car won't start if I don't give it throttle...
Hey everyone. My car won't start unless I give it gas. Once the engine is warm, 8/10 times, the engine will turn over no problem without the help of the throttle. This has been a problem for as long as I've had the car (over a year). Is there anything I can do to fix or at least help this issue? Any help is appreciated!
- Kyler
_________________________
1989 Camaro RS
Stock 305 TBI
90,000 miles
- Kyler
_________________________
1989 Camaro RS
Stock 305 TBI
90,000 miles
Last edited by Kyler_89RS; Aug 14, 2018 at 08:38 PM.
Joined: Jun 2003
Posts: 5,028
Likes: 78
From: Desert
Car: 1991 Z28 Vert
Engine: 383 single plane efi
Transmission: T-56
Axle/Gears: 8.8 with 3.73s
Re: Car won't start if I don't give it throttle...
Usually not starting without throttle opening at cranking means you either have too much fuel or not enough air. Could be the idle air control valve, throttle position sensor or a leaky injector.
Thread Starter
Member
Joined: Jul 2017
Posts: 119
Likes: 6
From: St. Louis, MO
Car: 1989 Chevy Camaro RS
Engine: 305 TBI
Transmission: 700R4
Axle/Gears: 2.73 Posi
Re: Car won't start if I don't give it throttle...
I don't know my fuel pressure by heart. I always let the pump run before I attempt to crank the car.
Thread Starter
Member
Joined: Jul 2017
Posts: 119
Likes: 6
From: St. Louis, MO
Car: 1989 Chevy Camaro RS
Engine: 305 TBI
Transmission: 700R4
Axle/Gears: 2.73 Posi
Re: Car won't start if I don't give it throttle...
If it's too much fuel, how would I go about correcting that? Should I replace the intake to see what that does? The car idles at about 500-550. Is that a reasonable idle speed or should I increase it?
Re: Car won't start if I don't give it throttle...
Is the O2 sensor showing a rich condition?
What is the commanded idle speed, and the actual idle speed?
Thread Starter
Member
Joined: Jul 2017
Posts: 119
Likes: 6
From: St. Louis, MO
Car: 1989 Chevy Camaro RS
Engine: 305 TBI
Transmission: 700R4
Axle/Gears: 2.73 Posi
Re: Car won't start if I don't give it throttle...
If you read Tibo's reply, you would maybe understand why I said to replace the air filter/ intake.
Trending Topics
Joined: Jun 2003
Posts: 5,028
Likes: 78
From: Desert
Car: 1991 Z28 Vert
Engine: 383 single plane efi
Transmission: T-56
Axle/Gears: 8.8 with 3.73s
Re: Car won't start if I don't give it throttle...
Thread
Thread Starter
Forum
Replies
Last Post
mb67
Tech / General Engine
11
Aug 12, 2010 03:46 PM
transram88
Tech / General Engine
1
Apr 5, 2005 05:52 AM






