82 fuel injection problems
Thread Starter
Drifting
Joined: Sep 2004
Posts: 1,270
Likes: 4
From: Celeste Texas
82 fuel injection problems
I'm not getting fuel from my injectors. I have power to them and the fuel pump is running. My computer doesn't show any codes and from what I can tell it's happy. The injectors get their ground through the computer but I can't tell much after that. Anybody out there have an idea?
Bill
Bill
Race Director
Joined: May 2006
Posts: 16,528
Likes: 53
From: Dayton, Ohio
Gotta have spark first-make sure you have 12 volts to the distributor-then take the cap off and look at the rotor and make sure it hasnt burnt through in the center under the button
Drifting
Joined: May 2004
Posts: 1,442
Likes: 2
From: Flanders NJ
If you are not getting fuel out of the injectors then it is not an ignigtion problem. Chances are your fuel pump is shot or the fuel filter is clogged. If you need to replace the pump get an '85 pump, it has a higher pressure and volume than the '82 and is a direct replacement. Also replace the sock on the pick up.
Remove fuel filter and have someone turn the key on you should get flow out of the line from the tank. Use a container to catch the fuel. If there is no flow or very little then the pump is bad. If you have good flow then repace filter. Hopefully that will do it.
Remove fuel filter and have someone turn the key on you should get flow out of the line from the tank. Use a container to catch the fuel. If there is no flow or very little then the pump is bad. If you have good flow then repace filter. Hopefully that will do it.
Pro
Joined: Oct 2006
Posts: 564
Likes: 0
From: London
1..You may want to check the two TBI fuses in the fusebox marked Inj #1 & #2 and are 3amp fuses.
2..Check the fuel pump relay.Fuel pump relay on an 82 is behind the ECM, which is behind the battery. The relay is about 2" square in size. Make sure it's not just a lose connection on the relay and try tapping it with a screw driver and see if that helps.
3..Disconnect the battery for a few minutes to reset the computer.
2..Check the fuel pump relay.Fuel pump relay on an 82 is behind the ECM, which is behind the battery. The relay is about 2" square in size. Make sure it's not just a lose connection on the relay and try tapping it with a screw driver and see if that helps.
3..Disconnect the battery for a few minutes to reset the computer.
Thread Starter
Drifting
Joined: Sep 2004
Posts: 1,270
Likes: 4
From: Celeste Texas
This car has been a continuing drama. A month or so ago my old pump died after 290,000 miles so I upgraded to the 85 pump, a new sock and a filter. It ran unbelieveably better after that. I drove it to work one day at speeds faster than it would go before. That day I had to be towed home. After a few days it started right up. I drove a few more times then today nothing again. Today my fuel pump sounds like it's working, I have 11.something volts at each injector, no ground for either one and no spark either. It's driving me crazy.
Bill
Bill
Melting Slicks
Joined: Dec 2006
Posts: 2,669
Likes: 3
From: Kingston Ontario
This car has been a continuing drama. A month or so ago my old pump died after 290,000 miles so I upgraded to the 85 pump, a new sock and a filter. It ran unbelieveably better after that. I drove it to work one day at speeds faster than it would go before. That day I had to be towed home. After a few days it started right up. I drove a few more times then today nothing again. Today my fuel pump sounds like it's working, I have 11.something volts at each injector, no ground for either one and no spark either. It's driving me crazy.
Bill
Bill
However, the ECM does not control ignition spark during cranking. You must troubleshoot ignition system to determine why you have no spark.
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Pro
Joined: Oct 2006
Posts: 594
Likes: 3
From: Peoria IL
Checkout the Crossfire Vault here :-http://www.crossfire.homeip.net/cftest/default.asp
It is a forum dedicated to the Xfire injection that you (and I ) have on our 82's , They are a great bunch of guys and are very experienced at getting these xfies running as they should
See you over there
It is a forum dedicated to the Xfire injection that you (and I ) have on our 82's , They are a great bunch of guys and are very experienced at getting these xfies running as they should
See you over there
Team Owner
Joined: Jul 1999
Posts: 65,492
Likes: 230
From: Orange Park Florida
This car has been a continuing drama. A month or so ago my old pump died after 290,000 miles so I upgraded to the 85 pump, a new sock and a filter. It ran unbelieveably better after that. I drove it to work one day at speeds faster than it would go before. That day I had to be towed home. After a few days it started right up. I drove a few more times then today nothing again. Today my fuel pump sounds like it's working, I have 11.something volts at each injector, no ground for either one and no spark either. It's driving me crazy.
Bill
Bill
I would hope that is a typo up there, the '84 had a crossfire injection, same as your '82.....both running around 10? psi fuel pressures...
the '85 pump is for a TPI car, and runs closer to 35-45 psi, and so would flood hell outta your engine, which matches your starting problems, and having it run after a time sitting....
typo, or NO???
Thread Starter
Drifting
Joined: Sep 2004
Posts: 1,270
Likes: 4
From: Celeste Texas
It's not a typo. Lengthy explanations are available on the crossfire forum. The 82-84 pump feeds the engines with 10-12 psi at best. The 85 pump is capable of 50 psi but the stock regulator setting returns everything above 12. With the miles on my original stuff I wasn't getting enough fuel to support high speed power. The high pressure pump solved that and once I get the regulator adjusted to 15psi I am told that there will be more gains. Right now I still have the stock horspower but with an extra hundred or so planned the original pressure certainly wouldn't have been enough.
Bill
Bill
Melting Slicks
Joined: Jul 2005
Posts: 2,740
Likes: 3
From: Aurora Ontario
Sounds like an intermittent problem which would suggest wiring.
Do you have a test light? Probe the electronic connection at the injectors. The test light should blink when you turn the car over.
This is somewhat of a guessing game.
When you first turn the car to "on" do you hear the fuel pump kick in for about 2 seconds? You should.
Do you hear a prime pulse from the injestors? You should.
Now the problem I guess is when you turn it over you get no spray from the injectors. Did you check the fuses as suggested?
Make sure the electrical connections at the distributor are good.
You may need to clean the connectors at the ECM. Is your battery loose in the tray? is it bouncing off the ECM?
Follow the wires around from the injectors. they go into a black box in the fire wall. if you are not getting a pulse on the test light open the black box. there are 3-4 connectors in there....unplug and clean them.
Fuel filter is another good thing to check.
Jim
Do you have a test light? Probe the electronic connection at the injectors. The test light should blink when you turn the car over.
This is somewhat of a guessing game.
When you first turn the car to "on" do you hear the fuel pump kick in for about 2 seconds? You should.
Do you hear a prime pulse from the injestors? You should.
Now the problem I guess is when you turn it over you get no spray from the injectors. Did you check the fuses as suggested?
Make sure the electrical connections at the distributor are good.
You may need to clean the connectors at the ECM. Is your battery loose in the tray? is it bouncing off the ECM?
Follow the wires around from the injectors. they go into a black box in the fire wall. if you are not getting a pulse on the test light open the black box. there are 3-4 connectors in there....unplug and clean them.
Fuel filter is another good thing to check.
Jim
Runs real nice too.
Race Director
Joined: May 2006
Posts: 16,528
Likes: 53
From: Dayton, Ohio
Just don't drive it any further than you care to walk or get AAA.
Burning Brakes
Joined: Nov 2005
Posts: 1,143
Likes: 0
From: Leander Texas
I believe the ignition control module is bad. The ignition control module which is located in the distributor controls spark, and it sends a signal to the ECM telling it that the engine is cranking. Once the ECM recieves this signal from the ignition control module it will fire the injectors. If the ECM doesn't recieve this signal from the ignition control module the injectors wont fire, and the fuel pump may not come on. You will also not have any spark.
The ignition control module can, and will fail intermittantly, usually when the engine is warmed up.
Almost all auto parts stores can test the module, and a new one for a
'82 is about $30.oo.
I suggest you remove the module from the car, and have it tested. (have them run the test at least three times to get it good, and warm)
The ignition control module can, and will fail intermittantly, usually when the engine is warmed up.
Almost all auto parts stores can test the module, and a new one for a
'82 is about $30.oo.
I suggest you remove the module from the car, and have it tested. (have them run the test at least three times to get it good, and warm)