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Old 11-10-2011, 10:40 PM   #1
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Misfiring problems

My 88gt is turning off when I hild the clutch in at stops also is having problems misfiring. I have no idea whats wrong with it. Mods are cai, tbird maf housing, 70mm tb, tfs manifold, shortys and flows.
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Old 11-10-2011, 10:57 PM   #2
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The dying is more than likely your clutch safety switch. Need more info about the misfiring. Is it only at idle, acceleration, certain rpms?
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Old 11-10-2011, 11:53 PM   #3
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How do I fix the cluth switch issue?
It does it under acceleration
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Old 11-11-2011, 06:39 AM   #4
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I unplugged mine and don't have that problem anymore, but I don't have to push my clutch in to start my car. The switch might be bad so you can probably replace it and it work fine.
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Old 11-11-2011, 04:49 PM   #5
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Were is this switch located
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Old 11-11-2011, 04:55 PM   #6
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Quote:
Originally Posted by Stockish302
Were is this switch located
Right above the clutch pedal, follow the arm up and you can see it.
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Old 11-11-2011, 05:36 PM   #7
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Do know what might be making the car misfire?
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Old 11-13-2011, 10:57 PM   #8
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I fixed the dying when the clutch is in issue, but im still having misfiring issues
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Old 11-13-2011, 11:35 PM   #9
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Re: Misfiring problems

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I fixed the dying when the clutch is in issue, but im still having misfiring issues
Give us a good description of what, when, how and any other pertinent information.
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Old 11-14-2011, 12:31 AM   #10
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Then I go wot it starts to misfire between 2k and 4500 rpm also under normal driving once in a while but mostly under wot.
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Old 11-14-2011, 01:15 AM   #11
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Re: Misfiring problems

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Then I go wot it starts to misfire between 2k and 4500 rpm also under normal driving once in a while but mostly under wot.
Have you checked your distributor cap, wires & rotor lately?
Look at your engine in the dark and see if you can see any sparks jumping or if you notice a bluish corona around the plug wires.
Make sure your wires are not touching any metal surfaces. Keep at least 1/2" clearance between the wires. Pay close attention to the plug wires to cylinders 5 & 6. They especially need to be kept apart because of their position in the firing order. A cross fire between these two cylinders can lead to a split or damaged cylinder.
Another issue could be ionization of the air inside the distributor cap. This can cause misfire at higher rpms and altitudes. Make sure the small vent opening in the top of the distributor cap is not clogged up.
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Old 11-14-2011, 01:54 PM   #12
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Im going to change the cap and rotor today and see if it helps. I changed the cap and rotor like a year and a half ago along with the plugs and wires. Im going to take the plugs off and re-gap them check the wires for any damage replace the cap and rotor for a msd cap and rotor, while im there might as well get a msd coil.
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Old 11-14-2011, 02:23 PM   #13
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Re: Misfiring problems

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Im going to change the cap and rotor today and see if it helps. I changed the cap and rotor like a year and a half ago along with the plugs and wires. Im going to take the plugs off and re-gap them check the wires for any damage replace the cap and rotor for a msd cap and rotor, while im there might as well get a msd coil.
The MSD parts are a good idea. I've used them for years with no complaints.
Check the cap and rotor contacts to see if they are discolored or burnt if brass and if they have a white buildup if they are aluminum. That will let you know if they are part of the problem.
Brass is always better in those contact areas.
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Old 11-15-2011, 04:38 AM   #14
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It was the cap and rotor the cap was burnt at the contact points.

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Old 11-15-2011, 02:08 PM   #15
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Re: Misfiring problems

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It was the cap and rotor the cap was burnt at the contact points.

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Glad you found the problem.
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