CROSS FIRE -HELP-
Thread Starter
Racer
Joined: Oct 2003
Posts: 376
Likes: 0
From: NE PA PA
CROSS FIRE -HELP-
RE: 82 THAT MY FRIEND JUST PICKED UP. WON'T START. NEW FUEL PUMP, NEW COMPUTER. HE CAN GET THE FUEL PUMP TO RUN BUT CAN NOT GET INJECTORS TO CYCLE. HAS VOLTAGE TO THE INJECTOR COILS. ANY IDEAS? :confused:
Race Director
Joined: Dec 1999
Posts: 16,945
Likes: 9
Re: CROSS FIRE -HELP- (JBR)
the injectors have 5V constant voltage, if so the fuses (2 of them) are in tact. The injectors work by grounding (the injector drivers in the ECM do that). Either the ECM is bad or there is no cranking signal. Have you tried pulling any fault codes??
Thread Starter
Racer
Joined: Oct 2003
Posts: 376
Likes: 0
From: NE PA PA
Re: CROSS FIRE -HELP- (Twin_Turbo)
Thanks for the reply. He has installed a new ECM unit in the dist. The 5v ? He tells me with the key on, the coil at the injector will lite up a test lite nice and bright. Fault codes have not been read. If you need the radio to do this, then thats out,(no radio). He was wondering about the chip that goes in the computer. New computers don't come with them, you use the old one in the new unit. :cheers: :confused:
Race Director
Joined: Dec 1999
Posts: 16,945
Likes: 9
Re: CROSS FIRE -HELP- (JBR)
5V will light up the test light.
ECM in the dist? That's the EST, the ECM is behind the drivers seat, under the storage box, in front of the battery. To remove it the battery needs to come out.
As for pulling codes, remove the ashtray and the ALDL connector is right under there, jumper the test and ground pinouts and the check engine lamp will start to show the codes. Go to http://www.crossfire.homeip.net and then to the faq & tech articles for info on how to do all this. To properly diagnose the system you will AT LEAST need a multi meter.
ECM in the dist? That's the EST, the ECM is behind the drivers seat, under the storage box, in front of the battery. To remove it the battery needs to come out.
As for pulling codes, remove the ashtray and the ALDL connector is right under there, jumper the test and ground pinouts and the check engine lamp will start to show the codes. Go to http://www.crossfire.homeip.net and then to the faq & tech articles for info on how to do all this. To properly diagnose the system you will AT LEAST need a multi meter.
Thread Starter
Racer
Joined: Oct 2003
Posts: 376
Likes: 0
From: NE PA PA
Re: CROSS FIRE -HELP- (Twin_Turbo)
Thanks for your help Twin-Turbo. I'll keep everyone posted on the progress. By the way I just read Road racers last post. Boy things can really be different out there. :cheers:
Le Mans Master
Joined: Apr 2001
Posts: 5,000
Likes: 1
From: Minneapolis, Mn USA
Re: CROSS FIRE -HELP- (PB82CE)
If the Oil pressure sensor is bad, this will also stop the injectors from firing.
Teh Crossfire injection fault is THE place to go for info.
Also you should get an 82 GM Corvette shop manual for help in troubleshooting. You might find one on Ebay for cheap.
Brent...
Teh Crossfire injection fault is THE place to go for info.
Also you should get an 82 GM Corvette shop manual for help in troubleshooting. You might find one on Ebay for cheap.
Brent...
Race Director
Joined: Aug 1999
Posts: 11,117
Likes: 671
From: SE Pennsylvania
St. Jude Donor '03 thru '26
Oldtimer
Re: CROSS FIRE -HELP- (JBR)
Http://www.crossfire.webhop.net I'll bet your friend has a corrosion problem somewhere at the ECM unit. Twin Turbo is our resident expert on crossfires. :chevy If there is one thing he knows, it's crossfire engines :yesnod:
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Race Director
Joined: Dec 1999
Posts: 16,945
Likes: 9
Re: CROSS FIRE -HELP- (MN-Brent)
If the Oil pressure sensor is bad, this will also stop the injectors from firing.
Teh Crossfire injection fault is THE place to go for info.
Also you should get an 82 GM Corvette shop manual for help in troubleshooting. You might find one on Ebay for cheap.
Brent...
Teh Crossfire injection fault is THE place to go for info.
Also you should get an 82 GM Corvette shop manual for help in troubleshooting. You might find one on Ebay for cheap.
Brent...
As for hypertech, they are not correct replacements but some kind of performance chip, the performance part is nowhere to be found though. The ONLY neat thing about them is the elimination of the TCC lockup in lower 3 gears.
It almost HAS to be your ECM or there's some kind of corrosion on the connectors indeed, check for continuity in the wiring (ground test from injector connector to the correct pinout on the ECM, the schematics are on the crossfire site)
Safety Car
Joined: Jul 2001
Posts: 3,921
Likes: 2
From: York PA
Re: CROSS FIRE -HELP- (JBR)
I don't know if the '82 ECM is like the '81 ECM but one of the fisrt steps it to turn the ignition to "ON" but don't try to start the car. If your Check engine light is not on you have a problem.
