hi all.
just changed the head gasket on my 99 xdi. but after putting it all back together (whata pain in the butt) she runs fine if a bit louder it seems but when the revs are help at a steady point, thats althrough the rev range the litle red light that looks like and engine comes on the the power is reduced. if you let off the throttle the light goes out and you can carry on excelerating but again when you hold a constant rev it comes back on. thought it might be a loose wire when i put it back together but cant find any.

any ideas people

thanks very much

check the wire to number 1 injector isnt shorting on the engine!