DanSWfez

Hi guys and girls, iv had the fez for 8 years ands it been fine but a few months back just started running lean and had a few ideas from people but nothing is working i had a 195 chip and injectors removed all back to standard but still lean. Also sprayed brake cleaner to find air leaks. Anyone had this or have any ideas what i would be? very gratefully to any help thank Dan.

Mad_Mat

My best internet keyboard warrior guess is either Fuel pump. Fuel pump wiring or fuel pressure regulator gone bad. Good luck

DanSWfez

Thanks mad mat, iv tryed new pump and had pressure tested all ok ill try find another reg and look at wiring got to worth a go 👍

matthart

How do you know it's running lean? Got a well calibrated wideband?

DanSWfez

Put it on a rolling road to see what he could do but he wonldnt touch it said it was lean as fook and I need to sort it first, he did say fuel pressure was good. Most garages dont have a clue even ford lmfao one charged me 180 and said it was the earth and they had sorted it but temp is still flyin up with little throttle think they just want to plug it in and let the computer do the work. Went all through the wiring with a multimeter and cheaked fuses and relays. Just read on hear about engine temp sensor under inlet they sometimes dont break just send it crazy will have one tomorrow let you know. 👍👍

DanSWfez

Rolling road told me, was told at ford it needed setting up

DanSWfez

Seen something about the engine temp sensor under the inlet on here goin to try it later

DanSWfez

Checked wiring and fule pressure will try map sensor after this, garage charged me 180 saying it was bad earth but dint fix it

DanSWfez

Sorted! It was the sensor on the underneath of the inlet