159 2.4 20007 plate
19,500 DPF/EGR by
AO Silver Member
Join Date: May 2009
Location: United Kingdom
+1 thermostat causing cool running.
Your description of going above 90 in town stop/start traffic with fan cutting in is to be expected and I consider normal operation - however the thermostat may not be fully opening (as well as not fully closing) so, with a new stat, you may also see some improvement (reduction) in the number of times you get high temps.
If you are worried about fan operating temperature get a laptop, a free copy of FES and a lead set and monitor the exact operating (cut in / out) temp of the fan. I think it should turn the fan on at 98 degrees and turn it off at about 88. Well, that's what my son's 1.6 147 does!
Last edited by kandlbarrett; 02-03-12 at 16:33.