Crossfire Intermittent Starting Problem
Thread Starter
Heel & Toe
Joined: Feb 2010
Posts: 24
Likes: 0
Crossfire Intermittent Starting Problem
Need your sage advice. My 82 CE has developed a problem that I can't diagnose. Lately, when I drive it and then stop someplace, it doesn't
want to start again for some time. Eventually, within about an hour it cranks up and is good to go. Since this intermittent problem has started, my wife is afraid to ride with me for fear of being stuck away from home. Anyone have a similar problem???
want to start again for some time. Eventually, within about an hour it cranks up and is good to go. Since this intermittent problem has started, my wife is afraid to ride with me for fear of being stuck away from home. Anyone have a similar problem???
Burning Brakes
Joined: Jun 2003
Posts: 1,079
Likes: 1
From: Niagara Falls ON
I had a similar problem with my 1976. The carburetor was out of adjustment. That fixed it.
With the crossfire I would check to see if anything is out of adjustment. Since there are more electronics to that car I would also see if there are any wires under the hood that may be exposed due to the insulation shriking over time. That can cause the computer to not read things right.
Check the basics to make sure that there is a good connection at all points.
With the crossfire I would check to see if anything is out of adjustment. Since there are more electronics to that car I would also see if there are any wires under the hood that may be exposed due to the insulation shriking over time. That can cause the computer to not read things right.
Check the basics to make sure that there is a good connection at all points.
Le Mans Master
Joined: Jul 2000
Posts: 6,664
Likes: 162
From: columbia city in
okay now you have to figure out if you are not getting spark or fuel .the next time it wont start.use a extra spark plug, pull off a spark plug wire and see if it is getting spark .with the air cleaner off look for fuel coming from the injectors.http://www.crossfire.homeip.net/index.php?act=idxthis is where i get my anwers on cross-fires.
Last edited by terry82; Oct 6, 2010 at 10:08 PM.
Melting Slicks
Joined: Jul 2005
Posts: 2,740
Likes: 3
From: Aurora Ontario
This part http://www.ecklers.com/corvette-dist...1981-1991.html
don't forget the lithium grease. You need to paste it on the bottom of the module were it makes contact with the distributor to displace heat transfer. Failing to do this will result in another replacement in a few months.
Jim
Melting Slicks
Joined: Jul 2005
Posts: 2,740
Likes: 3
From: Aurora Ontario
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5th Gear
Joined: Oct 2007
Posts: 5
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LaRastus
Mine got to where I would drive it aprox 3 miles and then do the same thing. It was getting fuel but come to find out my TPS sensor was not at the .525 +- .075 where it should have been. I used a digital voltmeter and set it correctly and have not had that problem since.
Melting Slicks
Joined: Jul 2005
Posts: 2,740
Likes: 3
From: Aurora Ontario
Instructor
Joined: Nov 2010
Posts: 127
Likes: 0
From: Twin Falls Id
Mine got to where I would drive it aprox 3 miles and then do the same thing. It was getting fuel but come to find out my TPS sensor was not at the .525 +- .075 where it should have been. I used a digital voltmeter and set it correctly and have not had that problem since.
Marcus
Melting Slicks
Joined: Jul 2005
Posts: 2,740
Likes: 3
From: Aurora Ontario
Here is how to do it....
http://www.crossfire.homeip.net/index.php?showtopic=79
Don't bother building the jumper harness. Use paperclips tape or attach them to the meter ends then insert right into the back of the harness connector. Set the meter down somewhere where you can see it. Loosen off the TPS screws and move until you get .525. Yo will notice that when you get .525 and go to tighten the bolt the setting may change....real sensitive. So lets say it moves by .20....set it at .505....then tighten and it should move to .525...just adjust for the play.
You do this with the car off but ignition on.
Make sure you use an automotive meter....not the warning to the right of the article....10 ohm impedence....
J
Last edited by jdp6000; Feb 22, 2011 at 09:00 PM.
Instructor
Joined: Nov 2010
Posts: 127
Likes: 0
From: Twin Falls Id
Here is how to do it....
http://www.crossfire.homeip.net/index.php?showtopic=79
Don't bother building the jumper harness. Use paperclips tape or attach them to the meter ends then insert right into the back of the harness connector. Set the meter down somewhere where you can see it. Loosen off the TPS screws and move until you get .525. Yo will notice that when you get .525 and go to tighten the bolt the setting may change....real sensitive. So lets say it moves by .20....set it at .505....then tighten and it should move to .525...just adjust for the play.
You do this with the car off but ignition on.
Make sure you use an automotive meter....not the warning to the right of the article....10 ohm impedence....
J
http://www.crossfire.homeip.net/index.php?showtopic=79
Don't bother building the jumper harness. Use paperclips tape or attach them to the meter ends then insert right into the back of the harness connector. Set the meter down somewhere where you can see it. Loosen off the TPS screws and move until you get .525. Yo will notice that when you get .525 and go to tighten the bolt the setting may change....real sensitive. So lets say it moves by .20....set it at .505....then tighten and it should move to .525...just adjust for the play.
You do this with the car off but ignition on.
Make sure you use an automotive meter....not the warning to the right of the article....10 ohm impedence....
J
thank you I appriciate it.
Team Owner
Joined: Jan 2006
Posts: 37,637
Likes: 3,116
From: Crossville TN
Ignition module in the distributor (heat related), ECU problem, fuel pump.
First diagnose to see if you have any spark when the car "goes dead". If you do, then it's a fuel delivery problem. If no spark, it's a module or ECU, or 'general' ignition problem. If you have an induction coil type timing light, just hook it up to the connectors at the rear of the alternator (for 12v and ground), put the induction coil on one of the plug wires and try to start it. If the plug is getting spark, the light will flash with each signal. No flash....no spark.
First diagnose to see if you have any spark when the car "goes dead". If you do, then it's a fuel delivery problem. If no spark, it's a module or ECU, or 'general' ignition problem. If you have an induction coil type timing light, just hook it up to the connectors at the rear of the alternator (for 12v and ground), put the induction coil on one of the plug wires and try to start it. If the plug is getting spark, the light will flash with each signal. No flash....no spark.
Thread Starter
Heel & Toe
Joined: Feb 2010
Posts: 24
Likes: 0
Problem Solved
Turns out one of the camshaft lobes was totally flat. Since it already was taken apart, installed a Comp performance cam, Hooker headers, and dumped the crappy Crossfire mess and upgraded to Tuned Port Injection system. Starts immediately with mucho power. Horsepower at the wheels on the Dyno is about 280 and torque is well over 300.
Best investment I ever made.
Best investment I ever made.
