throttle problem daf CF 360 2004?

Throttle cuts out intermitantly,engine warning light (yellow)with number 1 has flashed twice.I have fitted a new pedal & cleaned around the brake pedal as i am told this can sometimes cut the throttle out. Will lose throttle at various revs. Happens when truck is still or moving. Truck goes as it should for a while & then no throttle, flick it & away we go again .Can someone please help ,i will then get a credit note for the £300 pedal that i may not need to buy. You good people may like to know Daf wanted, £25 to answer this Q, £400 to drive 35 miles to my depo & diagnose .£800 to fit a wiring loom if needed & two arms a leg & a pint of blood if it got any more serious,why i run a £75000.00 truck & only charge £35 p/hr, _ _ _ _ knows ,its because i am not a mecanic i suppose ,anyway thanx for listening.