84 corvette
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2nd Gear
Joined: Jan 2016
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84 corvette
84 corvette sat since 2002 it has 48,000 mi it was never was started up i purchased the car it was kept inside I had the car towed to my house I put in a new battery and the car turns over but wont start it seems the fuel pump isn't working is it possible the key is coded and loss its connections to the car I'm not sure but any help would be greatly appreciated
Race Director
Joined: Feb 2003
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From: Kingman AZ
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VATS was not incorporated until the 1986 Corvette. My suggestion (learned the hard way) is to purchase a Field Service Manual (FSM) for your year and follow the "No Start" flow chart. You can find them on eBay, Half.com, Amazon or advertise here in the parts for sale/wanted section. Don't guess - diagnose first. Just buying parts and installing them one or more at a time only leads to frustration and a maxed out Visa card
Drifting
Joined: Mar 2008
Posts: 1,814
Likes: 444
From: Denver CO
The key is not coded. The 84 does have an anti theft thingy but only blows the horn if car is broken it I think. To check for fuel take off air cleaner and crank to see if injectors are spraying.If they are check for spark. Check the fuses as the injectors and fuel pump are fused Fuel filter on frame rail located behind right front tire could be plugged.
Last edited by gjohnson; Jan 2, 2016 at 01:46 PM.
Safety Car
Joined: Sep 2004
Posts: 3,953
Likes: 550
From: Mission Viejo CA
If there is no fuel spraying from the injectors, try spraying some starting fluid into the intake while you're cranking it. Does it try to start? That will tell you whether ignition is working!
The old gas from 2002 needs to be replaced with fresh fuel. Get as much as possible out of the tank, then remove the fuel filter (bottom of car, right side, behind front wheel). The remaining fuel will run out of the fuel line. That's a good time to test the fuel pump. Does fuel spray out when you turn on the ignition? Keep that test short. No fires, please! You might as well install a new fuel filter while you're there.
WORK SAFE! Be sure to support the car properly!
The old gas from 2002 needs to be replaced with fresh fuel. Get as much as possible out of the tank, then remove the fuel filter (bottom of car, right side, behind front wheel). The remaining fuel will run out of the fuel line. That's a good time to test the fuel pump. Does fuel spray out when you turn on the ignition? Keep that test short. No fires, please! You might as well install a new fuel filter while you're there.
WORK SAFE! Be sure to support the car properly!
Pro
Joined: Jun 2008
Posts: 674
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From: Louisville Kentucky
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You need this...........http://www.parts123.com/corvettecent...050f&ukey=8622
Personally I would bet the fuel pump is bad, don't get aftermarket junk, buy AC Delco.
http://www.corvettemagazine.com/tech...-installation/
Personally I would bet the fuel pump is bad, don't get aftermarket junk, buy AC Delco.
http://www.corvettemagazine.com/tech...-installation/
Burning Brakes
Joined: Sep 2004
Posts: 1,130
Likes: 19
From: Arkansas
Fuel pump is dead. Try the starting fluid like mentioned earlier, but a pump will have to be put in. Drain gas like said before, you can also put in the new pump and let it pump out the old gas where the fuel filter connects.
Good luck, I don't think you will much beyond the fuel pump.
Shawn
Good luck, I don't think you will much beyond the fuel pump.
Shawn
Safety Car
Joined: Oct 2007
Posts: 4,426
Likes: 229
From: Pennsylvania
84 corvette sat since 2002 it has 48,000 mi it was never was started up i purchased the car it was kept inside I had the car towed to my house I put in a new battery and the car turns over but wont start it seems the fuel pump isn't working is it possible the key is coded and loss its connections to the car I'm not sure but any help would be greatly appreciated
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Pro
Joined: Jan 2003
Posts: 706
Likes: 47
From: Denver Colorado
You can "hot wire" the fuel pump from the ALDL connector to check it. The procedure is in the service manual but basically you put 12 volts to terminal "G" of the ALDL connector under the dash. The pump should then run. You did check the pump fuse?
The pump wires are accessible through the fuel filler hatch at the back. Carefully remove the rubber skirt (tears easily) from the filler neck and the wires and plug are next to the filler neck. Use a test light to see if you get voltage when the engine is cranking.
By the way, a "noid light" tester will tell you if the injectors are being commanded to fire and they are not expensive.
The pump wires are accessible through the fuel filler hatch at the back. Carefully remove the rubber skirt (tears easily) from the filler neck and the wires and plug are next to the filler neck. Use a test light to see if you get voltage when the engine is cranking.
By the way, a "noid light" tester will tell you if the injectors are being commanded to fire and they are not expensive.
Le Mans Master
Joined: May 2006
Posts: 7,708
Likes: 266
From: indy indiana
If I remember correctly, the TB nearest the driver is the workhorse of the two TB. by that I mean it regulates the fuel and also controls the fuel overfeed/return line. While you wait, go down to your favorite parts store and buy the twenty dollar Haynes manual. There is some decent stuff in there about the TBI system that's on the 84 vettes. I am going to get burned for saying that, but it will get you started. You don't need a FSM for everything, but like the others, I do recommend acquiring one for your year Corvette. good luck, welcome to the forum, come back soon and often. Oh, do NOT mix the front and rear TB, they are not the same and the front will NOT work on the back.
Last edited by ghoastrider1; Jan 8, 2016 at 05:53 PM.