On an 82 that my dad just bought, it will not start. He has checked the fuel pump, fuel pump relay, and the lines. We took the hose off from the tb and when he turned the key, gas came out. This car has sat up for about 8 - 10 years with nothing being done to it, even started. We are newbies when it comes to the crossfire injection or even to working on it. I told him about checking the fuses for the injectors. What else or where should we start looking for other clues to get it started? We can put gas in the tb and it will run until the gas is gone. Thanks in advance for your help.


Paul

 

http://www.crossfire.homeip.net/cftest/here is a good forum for you .if are getting fuel to the injectors,but the injectors are not spraying ,take out the fuses for the injectors and check to see that they are good and that the contacts are not coroaded.next things to check would be the computer [check plugin contacts ]and the oil presure switch[no oil presure it wont run]you may have some fuel in the line but on a car that has sat for that long i would make shure that the fuel pump is working with plenty of presure.pump could be bad or the sock on the pump good be pluged .

 

Change the fuel filter. It is by the frame near the front of the passenger door. Your injectors could be shot from sitting so long.

I would disconnect all of the fuel lines and purge them by blowing compressed air through them to make sure nothing is clogged. I would drain and clean the tank. Change the fuel pump (if its not bad now it will be shortly from sitting so long) make sure you change the sock too. You should have 12-15 psi of fuel pressure to operate the car. I would look at repacing the injectors if you are getting flow from the lines at the TBI Unit but no spray from the injectors. Turbo City has the injectors. I think they are about $100 each. You need two.

Once you get the car running you will probably need to check for vaccum leaks, do a tune up and balance the TBI unit.

Check out this link:

http://www.corvettefever.com/techart...ing/index.html

good luck

 

Start with the basics. Change the fuel filter. Check the fuses. Any engine light...codes? Check the fuse in the battery compartment....its for the ECM (computer). check the connectors at the ecm make sure they are clean. Fuel pump relay is in the storage comparment under the tray...several relays there. Is it in tact? In everything connected to something in the storage compartment?

Is all the wiring intact? wires going to the distributor? Etc?

Take the air cleaner off. Hood open. Here is how it should work. Turn the key to on. did you hear the intank pump at the rear go on for 2 seconds? should hear a buzzing sound. Did you hear the injectors kick in right after? Its the prime pulse...should see a burst of fuel. Crank the engine over. Watch the oil pressure guage...does the pressure rise? As you crank do the injectors spray fuel?

If you are not getting spray. check the connectors at the injectors with a test light. As you crank they should pulse. If you are getting a pulse the ECM is sending a signal. if you are getting a signal and no gas it could be the fuel pump, the filter, the injectors, or the fuel pump relay.

Don't mess with the settings on the throttle bodies at this stage. You will throw everything out and cause more problems later.

Jim

 

Thanks for some good directions to try. I knew if I ever found the right place I would find some knowledgable people on this. Thanks again and if anybody else has some ideas just let me know.


Paul

 

Your best bet is to join the Crossfire Injecton Vault forum at this point and start asking questions. You'll learn a lot and you'll be able to enjoy your ride.
http://www.crossfire.homeip.net/

 

If it's sat for 8-10 years, there's a possibility that the short rubber hose between the fuel pump and the metal line inside the tank has deteriorated and won't hold pressure. This will allow gas to "move" but when it builds up pressure (necessary for the injectors) it just comes spewing back out into the tank. The nice thing is, you don't have to drop the tank to get to the fuel pump - pop out the gas door & rubber surround, and it's only (IIRC) 8 bolts, 3 hoses, and one weatherpack electrical connector. Shouldn't take you longer than an hour, and you can replace the pump while you're in there with an '85 Vette pump. (Which is a common upgrade.)

Also see about some "noid" lights for the injectors. These will tell you if you have a pulse going to the injectors themselves. It's a possibility they could have frozen up as well. I'd suggest sending them off to Lindertech - he knows these injectors fairly well, and understands that they flow slightly different on purpose.

Just remember that the CrossFire is nearly IDENTICAL to the 2-bbl TBI systems used on Chevy Trucks and even Camaros and Caprices for MANY years. The ECM isn't even much different, just bulkier because it used older technology. The only differences are the manifold itself and the fact that it has two IAC's wired in parallel.

Starting is STILL a matter of spark/air/fuel. Loss of any one of these three will prevent it from starting, just like a carbureted car.

 

That fuse in your battery box is your problem. Pull it out and you'll find it's corroded just a little. Mine had all the same symptoms 2 months ago until I found my fuse was fuzzy. It lets enough current flow to check everything but not enough to run it all at once. Clean the fuse holder and the fuse, even if it's not your problem.

Good Luck

Bill

 

Ok, here comes the dumb question I hoped that I would not have to ask. In the battery box is a fuse block? All we have seen is just the 2 cables for the battery. Am I not looking at the right angle or in a hidden compartment in there? Thanks for all the help from you guys too.

Paul

 

If I remember correctly it is a plug in type fuse by the battery. The best thing you can do is go ebay and buy a service manual. It will tell you how fix virtually everything.

 

The fuse in the battery box is for the ECM. If you need to clear codes, pull the fuse for 10-20 seconds.

 

Its a single fuse. ECM is directly in front(towards drivers seat) of the battery. You should see a wire going to it from the fuse. The fuse is usually mounted to the right of the battery...towards the drivers side rear fender.

You don't see a fuse anywhere???

jIM

 

Ok, I had a few minutes this weekend and took the battery out and stuck my head in the box. Sure enough, fuse holder was there, the clip holding it had let it fall to the bottom, and I saw the ecm. I will check the fuse maybe tonight and go at this some more. Service manual is also headed this way. Thanks for helping on this.


Paul

 

Mine sat for 7 years. That is EXACTLY what mine did. The rubber hose was crumbling. Not enough gas to keep the engine running.