Re: Jacobs Electronics for Grand Wagoneer?
I had the sad experience of using a Jacobs on an 86 F150, 302. It was tested extensively and made virtually NO difference. I was ONE DAY over the 30 days and they refused to take it back. I made the mistake of leaving it on. After about 4 months the vehicle virtually wouldn't run on the interstate in Metro Minneapolis and I HAD to keep it going for a mile. The result was all the gas not burned in the ignition burned in the catalytic convertor. $300 later it was back on the road. I, for one, will NEVER use a Jacobs product and would not recommend them to anyone. IF you have an ignition problem, then an aftermarket will generally help. On newer style, very unlikely. Main thing is get GOOD spark plug wires and make sure everything stock is working right.