I had similar issues years ago. around 4K engine cuts out and then is fine, very intermittent. Some days it may be fine others it would do it. I found it to be the cap and rotor. Replaced it and it was perfect. May want to at least have a look at it.So the new engine has been installed in my S and everything is running smoothly, well almost. This problem usually happens when I'm in first gear and hit 4000 rpm. It feels like I'm hitting the rev limiter and the engine cuts out, and is very intermittent in other gears besides first. It happens sometimes in second gear, but not as frequently as in first. I checked the intake hose today and there were no cracks in it. Any ideas as to how I can solve this?
Thanks for any help,