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12/31/09 7:56pm - Original Message: '82 collector edition wont start....Help'
dans1yy07 Lifetime Member
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Brockport, NY - USA

Vette(s):
1982 Collector Edition

Joined: 1/2/2003
Posts: 44
I have an 82 corvette that ran fine but I wanted to upgrade the chip in the ecm. Put a hypertec chip in it. The car ran at a high idle with that in it. changed the hypertec chip out and reinstalled the original chip in ti. ran fine. Put the hypertec chip in it had high idle  again . put original chip in again cant get the car to run.  Removed the aircleaner . Poured small amt of fuel it throttle body. Car turned over. I think the fuel pump is shot . Any help appreciated.
 
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12/31/09 8:18pm - Reply: '82 collector edition wont start....Help'
ebo Lifetime Member
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Holland Patent, NY - USA

Vette(s):
#1 *1980 White, Red interior 14,000 mile #2 *1980 Red, Oyster interior 93,000 miles Resto project car, rebuilt to 383 stroker

Joined: 6/3/2008
Posts: 4395

Going to need more info...it does crank over?, does have spark?

BTW real close to you is Dave Wright. He just went through some fuel pump problems on his cross fire.

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12/31/09 11:19pm - Reply: '82 collector edition wont start....Help'
Adams' Apple Lifetime Member
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Duncanville, TX - USA

Vette(s):
#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas

Joined: 11/8/2003
Posts: 19449
With the multiple times of removing/installing the Prom(chip), it's possible one(or more) of the pins got bent. I would first double-check the prom installation.
The Hypertech prom would prolly need some time to re-adjust the idle speed, but it won't be able to relearn until the engine is at operating temp, and the ECM goes into "closed loop", usually about 5 minutes or more, at idle. Then you would need to drive it some.


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1/1/10 12:28am - Reply: '82 collector edition wont start....Help'
crossfire1982
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Cramerton, NC - USA

Vette(s):
black 1982 coupe slate gray interior, 350 crossfire, 1985 fuel pump, Steeroids R&P conversion

Joined: 8/22/2006
Posts: 1094
You may want to try the original chip again to see if that remedies the situation.  Do you get any spray at all from the injectors , even for a second or two when you try to crank?  You should be able to hear the fuel pump buzzz in the tank when you turn the key "ON" it will pressurize the system and then quit.  If you dont hear it buzz when the key is turned on then either the pump is history or its not getting power.  The fuel pump relay is in the same area of the ECM, you may have disturbed the connector to it while changing the chip.  Make sure all connections are tight.  The fuses for the ECM and he fuel pump are in the fuse panel under the dash near the top right corner (where they are easy to get to Confused)  Both are 10 amp.   You can check the wiring going to the fuel pump by removing the rubber bib around the gas tank filler neck, there are two wires that connect to a round plastic button, one is the feed from the fuel level sender and the other is the power going to the fuel pump, sorry , I cant tell you which is which, you may want to check voltage on these.  As Joel mentioned above the EMC will have to relearn after the battery has been disconnected. You will have to drive for several miles for the computer to relearn. Crossfire19822010-01-01 06:06:41

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1/1/10 12:06pm - Reply: '82 collector edition wont start....Help'
dans1yy07 Lifetime Member
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Brockport, NY - USA

Vette(s):
1982 Collector Edition

Joined: 1/2/2003
Posts: 44
There is no spray. will crank over.  Will check the pins on the prom & Does try to start when a small amt of gas is poured into throttlebody.
 
checked the fuel pump fuse and its ok.
there  is  no buzz when turning the car on that is why i think the fuel pump is dead. will check under the gas filler rubber.
 
Dan
ps
thanks for help so far
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1/1/10 12:09pm - Reply: '82 collector edition wont start....Help'
dans1yy07 Lifetime Member
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Brockport, NY - USA

Vette(s):
1982 Collector Edition

Joined: 1/2/2003
Posts: 44
Did see a little smoke comming from area of starter. will probably have to replace starter relay or starter soon too. CryCryCryCryCry    LOL
Dan 
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1/1/10 2:42pm - Reply: '82 collector edition wont start....Help'
kstyer Lifetime Member
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CUYAHOGA FALLS, OH - USA

Vette(s):
1975 C3 Red, T-Tops, Black Interior. All I need is time and money! Getting there!

Joined: 12/2/2003
Posts: 6410
I'm with Joel.  Check the pins and contacts on the chip.   This is the most likely.  If you don't see a problem there, check all the wires in the area that could be moved, tugged, etc.  You may have pulled something else loose.
 
And the computer does need to relearn programming after any change.  As Joel said, warm it up and drive it.   Get it over 40 mph on the drive and hold the speed steady for a few seconds.  The idle may correct itself.


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1/1/10 9:14pm - Reply: '82 collector edition wont start....Help'
dwright Gold Member
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Victor, NY - USA

Vette(s):
2004 Commemorative Edition Coupe, Auto w/HUD. 13K miles in 2015. Sold 1982 Red Coupe

Joined: 7/12/2004
Posts: 6756
I would also check the pins and contacts. That is the most likely problem.
I have the hyper chip in mine with no problem in that area.
If you do need to change the fuel pump, it is not difficult, just tricky getting the unit out of the hole.
Note how the wires are connected so you get them back the same way.
And replace the sock on the end at the same time.
 


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1/1/10 11:24pm - Reply: '82 collector edition wont start....Help'
Norsky Lifetime Member
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Twin Lakes, CO - USA

Vette(s):
SOLD - "The Toy" - 1970 Convertible
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"BLKBRRD" - 1978 Trans Am, 400ci/285hp, 4 spd, Black w/black interior, Hurst t-tops

Joined: 1/23/2002
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Another tip on the fuel pump swap - check the rubber hose connecting the pump to the metal fuel line.  If it shows any signs of wear replace it with the proper grade of rubber.

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1/5/10 4:19pm - Reply: '82 collector edition wont start....Help'
crossfire1982
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Cramerton, NC - USA

Vette(s):
black 1982 coupe slate gray interior, 350 crossfire, 1985 fuel pump, Steeroids R&P conversion

Joined: 8/22/2006
Posts: 1094
Did you identify the problem?  Did any of the above information help?

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1/6/10 10:09am - Reply: '82 collector edition wont start....Help'
dans1yy07 Lifetime Member
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Brockport, NY - USA

Vette(s):
1982 Collector Edition

Joined: 1/2/2003
Posts: 44
Car is put away for winter. Will work on it as I can. Second project is building a ramp to work on the vette. Found plans on C3 Corvette Land.
 
First will swap out prom back to Hypertek prom. Then the ramps been wanting to build ramps for along time so I can work on the vette.
 
Dan
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1/6/10 12:52pm - Reply: '82 collector edition wont start....Help'
VetteSpecialties
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Mounds View, MN - USA

Vette(s):
70 LT1 coupe, 69 350 HP coupe, 69 390HP 427 coupe, 71 LS5 convert, 85 coupe, 93 coupe

Joined: 5/24/2007
Posts: 1031
The chip controls the fuel pump, so Joel's idea of a bent pin would explain not hearing the pump run.  That seems like a first check.

Larry


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1/8/10 12:08pm - Reply: '82 collector edition wont start....Help'
vettejack Lifetime Member
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Titusville, FL - USA

Vette(s):
1977 Coupe (White), 1982 Coupe (Silver), 2006 Convertible (Victory Red). NCM Life Member #2221.

Joined: 12/19/2007
Posts: 142
 
 
I had a little bit of this problem with starting, and to stay running, while my '82 was in the shop for general maintenace. While moving the car outside, my mechanic said the car stalled and shut down. Eventually, with numerous troubleshooting trys and replacing both air throttle valves to no avail the car would not stay running.
 
Searching the car from front to back, we eventually found that the fault was in the fuel tank. Not the sending unit mind you, but the attaching hardware had failed. The sending unit has a hose held by 2 teflon clamps (pictured above) that is in turn attached to the fuel line leaving the tank and going to the engine/fuel pump. While both of the clamps over time had become 'brittle', one of them actually broke at the geared teeth and allowed the hose atttached to come undone and pretty much just rerouted the fuel right back into the fuel tank...allowing just enough fuel to reach the injectors and start the car for a few seconds.
 
So, I would also look at the sending unit assy and make sure all of the hardware that is attached, is in fact, attached and in good condition.
 
I replaced those teflon clamps with typical radiator hose clamps. The car runs like a champ now!
 
And keep in mind, this issue is only for the '82 MY...the only C3 with a in-tank fuel pump.
nasajack2010-01-18 07:30:21

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1/9/10 10:20am - Reply: '82 collector edition wont start....Help'
crossfire1982
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Cramerton, NC - USA

Vette(s):
black 1982 coupe slate gray interior, 350 crossfire, 1985 fuel pump, Steeroids R&P conversion

Joined: 8/22/2006
Posts: 1094
That 2 inch section of hose in the tank should be suspect in any 82 that has running or stumbling problems.  I changed my fuel pump about 2 years ago and my hose was in bad shape but when changing the pump on a friends 82 about a  year ago the 2 inch hose LITERALLY fell apart in my hands, it crumbled to dust as I removed it.  We also replaced the in-line fuel filter after replacing the pump.  I didnt cut the filter open to see how much of the hose particles were in there but Ill bet it was full.  Stumbling problem went away immediately.

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1/15/10 11:49am - Reply: '82 collector edition wont start....Help'
dans1yy07 Lifetime Member
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Brockport, NY - USA

Vette(s):
1982 Collector Edition

Joined: 1/2/2003
Posts: 44
UPDATE:
Took cover off vette, warmed up here 40 degrees.....
Took battery out and topped off charge and put in hyperchip. Pins on stock prom were messed up.
Will start  vette when battery is charged......
Will need stock prom when inspected. Anyone know where to get a stock prom????????
 
Dan.
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1/15/10 1:41pm - Reply: '82 collector edition wont start....Help'
dans1yy07 Lifetime Member
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Brockport, NY - USA

Vette(s):
1982 Collector Edition

Joined: 1/2/2003
Posts: 44
Update:
Put new battery in and tried to start but did not hear the fuel pump charge( whine) so will be checking all connections. Removed the rubber at gas tank filler found the wiring and hoses to be in good shape.
Feel the fuel pump is culprit.
Dan
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1/16/10 9:19am - Reply: '82 collector edition wont start....Help'
crossfire1982
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Cramerton, NC - USA

Vette(s):
black 1982 coupe slate gray interior, 350 crossfire, 1985 fuel pump, Steeroids R&P conversion

Joined: 8/22/2006
Posts: 1094
Look around in the battery compartment for an inline fuse and check it.  The fuse for my fuel pump relay is mounted in the battery compartment.

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3/10/10 10:35am - Reply: '82 collector edition wont start....Help'
dans1yy07 Lifetime Member
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Brockport, NY - USA

Vette(s):
1982 Collector Edition

Joined: 1/2/2003
Posts: 44
Worked on Vette yesterday. Took battery out, topped off charge on it, unplugged fuel pump relay checked plug and pins for problems, reinstalled the relay. Replaced fuse for relay with new. Will check fuses under dash for injectors.
 
Dan
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3/10/10 10:40pm - Reply: '82 collector edition wont start....Help'
Ron 78 Lifetime Member
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BINGHAMTON, NY - USA

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Joined: 7/19/2003
Posts: 3805
Ya gotsta love them puter controlled carsConfused,thats why I bought my 78,cause it aint got noneClap

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3/10/10 11:30pm - Reply: '82 collector edition wont start....Help'
dskopp
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Oak Creek, WI - USA

Vette(s):
1981 Great White Shark. Red Interior, 350/190hp. PS, PB (SS), A/C CC, T-Tops, Going to remain as Stock as possible. Served three years in Active Duty Army, then Retired Air Force after 34 years! Badger State Vetts Car Club. 175,000 Original miles!!

Joined: 5/21/2008
Posts: 1956
Dan, ya got her going yet??  Did you see the post about the teflon clamps in the tank??
Dan


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