91 C4 engine trouble
Thread Starter
5th Gear
Joined: Apr 2010
Posts: 5
Likes: 0
91 C4 engine trouble
i have a 1991 corvette with an L-98 ...its been sitting for over a year and finally have the time to tinker with it ... i changed the fuel pump and fuel filter,I use some starting fluid to start it and it starts right up runs strong for about 20 min and then shuts down completely with no prior sign, it doesn`t run rough or anything just shuts off and wont start back up for a few days.i changed the top half of the distributor and still the same. i`m really confused on what it could be.. i was thinking maybe the fuel pump or fuel pump relay any help would be great !
~sean
~sean
Le Mans Master
Joined: Jan 2010
Posts: 8,553
Likes: 3
Your batt probs got enough in it to start it but then not enough to keep it running. After all you say it's been sitting for a year or more. Take batt to AZ or somewhere and have it load tested.
I'd dump the fuel too, bad gas after a year aint good.
I'd dump the fuel too, bad gas after a year aint good.
Le Mans Master
Joined: Jan 2010
Posts: 8,553
Likes: 3
Check your coolant and T-stat and water pump. High temp will cause your car to shut down by itself.
The top coolant hose should get hot and firm at temp.
Just cause maybe your temp gauge shows OK, maybe not so?
The top coolant hose should get hot and firm at temp.
Just cause maybe your temp gauge shows OK, maybe not so?
Le Mans Master
Joined: Jan 2010
Posts: 8,553
Likes: 3
Sure you do, takes less than 5 min.
Just under your steering wheel, right about knee level, you'll find your connector box for reading your codes
Stick one end of a paperclip in slot A, and the other end in slot G, turn key to ON, do not start car.For a 91.
[F|E|D|C|B|A]
[G|H|J|K|L|M]
Short pin A to pin G
Turn ignition On
LCD will display codes.
1.0 are codes for CCM
4.0 are codes for ECM
7.0 are codes for Active Suspension Should show ERR which is normal
Do this asap and report back with any codes that show up, they'll be where your speedo is.
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Burning Brakes
Joined: Mar 2010
Posts: 1,151
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Burning Brakes
Joined: Mar 2010
Posts: 1,151
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[/B]
Sure you do, takes less than 5 min.
Just under your steering wheel, right about knee level, you'll find your connector box for reading your codes
Stick one end of a paperclip in slot A, and the other end in slot G, turn key to ON, do not start car.For a 91.
[F|E|D|C|B|A]
[G|H|J|K|L|M]
Short pin A to pin G
Turn ignition On
LCD will display codes.
1.0 are codes for CCM
4.0 are codes for ECM
7.0 are codes for Active Suspension Should show ERR which is normal
Do this asap and report back with any codes that show up, they'll be where your speedo is.
Sure you do, takes less than 5 min.
Just under your steering wheel, right about knee level, you'll find your connector box for reading your codes
Stick one end of a paperclip in slot A, and the other end in slot G, turn key to ON, do not start car.For a 91.
[F|E|D|C|B|A]
[G|H|J|K|L|M]
Short pin A to pin G
Turn ignition On
LCD will display codes.
1.0 are codes for CCM
4.0 are codes for ECM
7.0 are codes for Active Suspension Should show ERR which is normal
Do this asap and report back with any codes that show up, they'll be where your speedo is.
Thread Starter
5th Gear
Joined: Apr 2010
Posts: 5
Likes: 0
heck i love this car!! it was my first car..so i want to restore it to its former glory ,not much work really new tires and new seats really and a little engine dressup ... my wife is an avid corvette fan but she wants a '72 stingray ..would be nice but they are a bit pricey right now but we have a kid and mortgage so that takes the $$ away lol
