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85 Posts
1993 GT 5.0, just bolt-ons
T-5
My engine has started cutting out (I don't know what the official term is). It completely stops firing for a second and then comes back. When it does, the tachometer drops immediately. Here is a video I took:
5.0 Cutting Out - YouTube
When it first started it would only happen under load, but it has gotten worse. Now it will do it throughout the RPM range and without the engine being under load. It seems that the engine has to warm up before it happens, though. The only codes it throws are lean on both sides, but it was doing that before this problem. It was cutting out during the KOER test, but still no additional codes. The way the tach just drops tells me that it is ignition related and not fuel.
After searching around, I see that common causes of this problem are the ignition module (TFI?) and the coil pickup (PIP?). Is there any way to test these parts before I just start buying stuff?
T-5
My engine has started cutting out (I don't know what the official term is). It completely stops firing for a second and then comes back. When it does, the tachometer drops immediately. Here is a video I took:
5.0 Cutting Out - YouTube
When it first started it would only happen under load, but it has gotten worse. Now it will do it throughout the RPM range and without the engine being under load. It seems that the engine has to warm up before it happens, though. The only codes it throws are lean on both sides, but it was doing that before this problem. It was cutting out during the KOER test, but still no additional codes. The way the tach just drops tells me that it is ignition related and not fuel.
After searching around, I see that common causes of this problem are the ignition module (TFI?) and the coil pickup (PIP?). Is there any way to test these parts before I just start buying stuff?