Truck coils firing 2 coils only..
09-10-2010, 06:38 PM
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TECH Junkie
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Truck coils firing 2 coils only.. So I bought a set of used heatsink truck coils on here, not mentioning any names nor blaming anyone. Just looking for advice. The coils were from a seller with great positive feedback and he claimed to have installed them on a truck and it had a smooth idle with great throttle response..
I got the heatsink truck coils nicely cleaned up and installed, the car immediately stuttered and hesitated to even idle.. I let it idle for awhile, then take it around the block, and the car is shaking like hell. I park it, and put stock coils on and it runs great.. Today I decided to try it out again, I cleaned all the contacts with some electrical contact cleaner, and put some grease in the coil where the plug wire plugs in.. Plug everything back in, and the car takes forever to start up..
I started unplugging coils one at a time to find out which ones were good (if the car stuttered worse, then I unplugged a good coil).. So on the driver side, I unplugged each coil. Only the 2nd one made a difference in the way the car idled, it almost died. I had the 1st, 3rd, and 4th all unplugged at the same time and no difference at all. ONE COIL worked on that side.
Passenger side, same story, except only the 3rd coil worked.. Meaning I have two working coils. What are the chances of SIX coils going bad? Or am I missing something else required to have these work? It came with the mounting bracket and the harnesses. The wires look good. Except when I pulled back some of the wire wrapping tape, in the center were several wires heatshrunk and soldered together, which I was informed by a professional that that's how factory wiring harnesses are...
Any advice?
I got the heatsink truck coils nicely cleaned up and installed, the car immediately stuttered and hesitated to even idle.. I let it idle for awhile, then take it around the block, and the car is shaking like hell. I park it, and put stock coils on and it runs great.. Today I decided to try it out again, I cleaned all the contacts with some electrical contact cleaner, and put some grease in the coil where the plug wire plugs in.. Plug everything back in, and the car takes forever to start up..
I started unplugging coils one at a time to find out which ones were good (if the car stuttered worse, then I unplugged a good coil).. So on the driver side, I unplugged each coil. Only the 2nd one made a difference in the way the car idled, it almost died. I had the 1st, 3rd, and 4th all unplugged at the same time and no difference at all. ONE COIL worked on that side.
Passenger side, same story, except only the 3rd coil worked.. Meaning I have two working coils. What are the chances of SIX coils going bad? Or am I missing something else required to have these work? It came with the mounting bracket and the harnesses. The wires look good. Except when I pulled back some of the wire wrapping tape, in the center were several wires heatshrunk and soldered together, which I was informed by a professional that that's how factory wiring harnesses are...
Any advice?
