neon cutting out under hard acceleration

My friend has a neon with DOHC and also a minivan, 2.5 turbo. They both cut out under hard acceleration. They can be driven at highway speeds, but if
you feed lots of fuel they will cut out for a few seconds and then start pulling again. They will continue to do this as long as your foot is to the floor. Neither shows any codes. Any ideas? any help would be appreciated. Thanks in advance, Dale
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my first thought is crappy gas - citgo perhaps

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We live in central Saskatchewan and he has tried different brands with no noticeable difference. He's also changed fuel filters and plugs. Still puzzeled in Saskatchewan. thanks for any input. Dale

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sometimes here wrote:

Well, don't know how old the vehicles are but perhaps it's timing. Could be running rich or lean. Hard to tell.
Steve
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Thanks for the input guys. Problem solved. Plugs and wires. I'd never heard of plugs and wires making the engine cut out, thought that would cause a miss fire and a check engine light, but no engine light and engine would completely cut out. go figure. anyway, thanks. Dale

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wires made a hell of a difference in my 3.5
congrats on finding the problem

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