Start problem when hot
Thread Starter
Heel & Toe
Joined: May 2012
Posts: 23
Likes: 0
Start problem when hot
Excuse my English, i'm Swedish 
Have received a lot of help by reading on the forum ...
But now i need help.
My wonderful Vette 99 starts quite ok when it's cold, but when it is warm it dont start when i turn the key ( always lets the cumputer run it's course)
The second time i turn the key i can hear (the fuel pump ?) and the car starts ???
What Can it be ?
Can i fix it myself ?
Grateful for any help
Have received a lot of help by reading on the forum ...
But now i need help.
My wonderful Vette 99 starts quite ok when it's cold, but when it is warm it dont start when i turn the key ( always lets the cumputer run it's course)
The second time i turn the key i can hear (the fuel pump ?) and the car starts ???
What Can it be ?
Can i fix it myself ?
Grateful for any help
Tech Contributor
Joined: Jan 2007
Posts: 19,245
Likes: 1,092
From: Dyer, IN
Excuse my English, i'm Swedish
Have received a lot of help by reading on the forum ...
But now i need help.
My wonderful Vette 99 starts quite ok when it's cold, but when it is warm it dont start when i turn the key ( always lets the cumputer run it's course)
The second time i turn the key i can hear (the fuel pump ?) and the car starts ???
What Can it be ?
Can i fix it myself ?
Grateful for any help
Have received a lot of help by reading on the forum ...
But now i need help.
My wonderful Vette 99 starts quite ok when it's cold, but when it is warm it dont start when i turn the key ( always lets the cumputer run it's course)
The second time i turn the key i can hear (the fuel pump ?) and the car starts ???
What Can it be ?
Can i fix it myself ?
Grateful for any help
Hej,
When you say it does not start the first time, do you mean the engine rotates, but does not fire......or.....the engine does not rotate at all on the first try?
Tech Contributor
Joined: Jan 2007
Posts: 19,245
Likes: 1,092
From: Dyer, IN
Start by checking the fuel pressure at the fuel rail with a gauge. Have the gauge hooked up for the first cold start. Turn the key to on, but do not turn to start. The fuel pressure should be 55-61 psi, and should hold at that value, without bleeding down quickly.
Thread Starter
Heel & Toe
Joined: May 2012
Posts: 23
Likes: 0
Stupid quastion : How do i open the Fuel pressure valv cap ?
This will take a while to find parts her in SWEDEN
4 an female schrader valve coupling : in english please....
Tech Contributor
Joined: Jan 2007
Posts: 19,245
Likes: 1,092
From: Dyer, IN
Thread Starter
Heel & Toe
Joined: May 2012
Posts: 23
Likes: 0
I finally gave up trying to find the right tools in my city and drove down to my Corvette guy...
He helpt me out with no charge
Startet the car ten times in a row and the car fired up al ten times ????
I hade the PSI reading beteende 40-60,
Waited for 5 min turn the key without starting i it measured 15 PSI
Turnd the key again and it measured 60 PSI and it droped really fast.
Did this multiple times with the same results.
Tried to start the car when it was on 15 PSI : the engine workt really hard to fire and the PSI started to climb when it hit around 50 PSI it fired, this was not a beautiful thing .....
Talked to the guys in the shop and their suggestion was probably the fuel pump, but did not sound sure.
What now ?
He helpt me out with no charge
Startet the car ten times in a row and the car fired up al ten times ????
I hade the PSI reading beteende 40-60,
Waited for 5 min turn the key without starting i it measured 15 PSI
Turnd the key again and it measured 60 PSI and it droped really fast.
Did this multiple times with the same results.
Tried to start the car when it was on 15 PSI : the engine workt really hard to fire and the PSI started to climb when it hit around 50 PSI it fired, this was not a beautiful thing .....
Talked to the guys in the shop and their suggestion was probably the fuel pump, but did not sound sure.
What now ?
Last edited by The Dirty Swede; Jun 6, 2012 at 01:05 PM.
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Tech Contributor
Joined: Jan 2007
Posts: 19,245
Likes: 1,092
From: Dyer, IN
I finally gave up trying to find the right tools in my city and drove down to my Corvette guy...
Hi helpt me out with no charge
Startet the car ten times in a row and the car fired up al ten times ????
I hade the PSI reading beteende 40-60,
Waited for 5 min turn the key without starting i it measured 15 PSI
Turnd the key again and it measured 60 PSI and it droped really fast.
Did this multiple times with the same results.
Tried to start the car when it was on 15 PSI : the engine workt really hard to fire and the PSI started to climb when it hit around 50 PSI it fired, this was not a beautiful thing .....
Talked to the guys in the shop and their suggestion was probably the fuel pump, but did not sound sure.
What now ?
Hi helpt me out with no charge
Startet the car ten times in a row and the car fired up al ten times ????
I hade the PSI reading beteende 40-60,
Waited for 5 min turn the key without starting i it measured 15 PSI
Turnd the key again and it measured 60 PSI and it droped really fast.
Did this multiple times with the same results.
Tried to start the car when it was on 15 PSI : the engine workt really hard to fire and the PSI started to climb when it hit around 50 PSI it fired, this was not a beautiful thing .....
Talked to the guys in the shop and their suggestion was probably the fuel pump, but did not sound sure.
What now ?
1) Leaky injector
2) Bad check valve in the left pump assembly
3) Bad fuel pressure regulator.
Tech Contributor
Joined: Jan 2007
Posts: 19,245
Likes: 1,092
From: Dyer, IN
So yes, you need to investigate the issue. The best way to solve, is through isolation:
1) Isolating the fuel rail
2) Isolate the regulator
3) Isolate the pump
You will need the correct adapters for the fuel lines to accomplish this. Does your corvette shop have these tools?
Thread Starter
Heel & Toe
Joined: May 2012
Posts: 23
Likes: 0
Hmm again
I have no misfires and if the INSTED FUEL in the DIC is right i'm (not running rich ore poor) i think...
The car runs really god for a 1999
Except the starter problem.
Has the 99 a fuel filter/fuel pressure regulator (the same thing)? Is this it ACDelco GF822 ?
I think i will start with buying a new fuel filter/fuel pressure regulator.
Any advice what i should buy
I have no misfires and if the INSTED FUEL in the DIC is right i'm (not running rich ore poor) i think...
The car runs really god for a 1999
Except the starter problem.
Has the 99 a fuel filter/fuel pressure regulator (the same thing)? Is this it ACDelco GF822 ?
I think i will start with buying a new fuel filter/fuel pressure regulator.
Any advice what i should buy
Le Mans Master
Joined: Aug 2005
Posts: 5,375
Likes: 326
From: CA.
St. Jude Donor '13-'14-'15
Have you ever changed the fuel filter ??? A clogged filter would make the fuel pump "labor" when trying to start--- Even though your fuel pressure is OK there may be very little volume--
Tech Contributor
Joined: Jan 2007
Posts: 19,245
Likes: 1,092
From: Dyer, IN
Thread Starter
Heel & Toe
Joined: May 2012
Posts: 23
Likes: 0
I bought the car last year and it was imported from the USA the year before.
I found so many strange things in the car and under the hud. 12.400 miles with various owners. I dont think the fuel filter was changed in a long time ...... And i need to start somewhere.
How abaout the WIX 33737 ?
I found so many strange things in the car and under the hud. 12.400 miles with various owners. I dont think the fuel filter was changed in a long time ...... And i need to start somewhere.
How abaout the WIX 33737 ?
Tech Contributor
Joined: Jan 2007
Posts: 19,245
Likes: 1,092
From: Dyer, IN
I bought the car last year and it was imported from the USA the year before.
I found so many strange things in the car and under the hud. 12.400 miles with various owners. I dont think the fuel filter was changed in a long time ...... And i need to start somewhere.
How abaout the WIX 33737 ?
I found so many strange things in the car and under the hud. 12.400 miles with various owners. I dont think the fuel filter was changed in a long time ...... And i need to start somewhere.
How abaout the WIX 33737 ?
Thread Starter
Heel & Toe
Joined: May 2012
Posts: 23
Likes: 0
Orderd a WIX 33737 from your'e side of the world....2 weeks
In Sweden this part costs 166 USD
This is what i found in tools
http://biltema.se/sv/Bil---MC/Verkty...-delar-191398/
Will this work ?
In Sweden this part costs 166 USD
This is what i found in tools
http://biltema.se/sv/Bil---MC/Verkty...-delar-191398/
Will this work ?
Drifting
Joined: Feb 2008
Posts: 1,596
Likes: 67
From: Bahama North Carolina
Orderd a WIX 33737 from your'e side of the world....2 weeks
In Sweden this part costs 166 USD
This is what i found in tools
http://biltema.se/sv/Bil---MC/Verkty...-delar-191398/
Will this work ?
In Sweden this part costs 166 USD
This is what i found in tools
http://biltema.se/sv/Bil---MC/Verkty...-delar-191398/
Will this work ?
http://forums.corvetteforum.com/c5-t...the-trick.html
Thread Starter
Heel & Toe
Joined: May 2012
Posts: 23
Likes: 0
So i have changed the fuel filter and at the same time changed to a BLACKWING air filter 
Awsome tool by the way....
The starting problem is 50 % better than before.
Do i need to drive och start the car a couple of times before the computer has ( changed it's information) it feels like i dont have full power ?
Problem number 2: when driving i get BRAKE BEFORE SHIFT, WTF ?
10 PCM P0705
Little help please
Awsome tool by the way....
The starting problem is 50 % better than before.
Do i need to drive och start the car a couple of times before the computer has ( changed it's information) it feels like i dont have full power ?
Problem number 2: when driving i get BRAKE BEFORE SHIFT, WTF ?
10 PCM P0705
Little help please
Last edited by The Dirty Swede; Jun 6, 2012 at 01:01 PM.
Race Director
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