Hi guys.

I'm having a strange issue with my BF Fairlane.

Firstly at idle the car is almost perfect, with what I'd call a very minute miss every 30 seconds or so. This isn't my main concern at the moment.

When I try to hold the motor at 1000rpm it drops then comes back to a 1000rpm and does it over and over whilst I hold my foot on the accelerator.

I've replaced the following before posting here to fix it to no avail:

Coils
Spark plugs
Camshaft Sensors (Exhaust and Intake)
Tested crankshaft sensor (well within resistance)
Throttle position sensor

Also have run a diag tester for codes and nothing comes up

I've included a video showing what is happening.

https://www.youtube.com/watch?v=AddW4sTqB28&feature=youtube_gdata_player

I am desperate for a solution

Thanks

Watched the clip, It seems like a air fuel problem to me.
I'd start by checking all around for small vacuum leaks and even fuel leaks, could be the fuel pressure reg.
Could be a dirty/stuffed throttle body too.
No codes ?

Try and do a throttle body position reset and see if it helps.