Eb 4L heating up in 30+heat

[blwneb]

May someone might be able to answer this question, scenario 33degree day,a/c on, car stationary at lights, take off temp rises, drive goes down, at certian times, guage goes to 3 quarter a/c shuts down, temp drops rapidly, now i cannot seem to work oput why this is going on maybe someone might know, i have, replaced radiator with brand new genuine ford unit, replaced thermostat, replaced coolant, am running 2 12inch thermos one on drivers side radiator side the other on passenger side condenser side, which work well, and am running an auto, no all this only happens with a/c on, and 30degree plus days, in stop start traffic, could it be ac problem or water pump problem.

[svo347]

Have you wired the fans to kick in when the aircon is on.
I know with my conversion one of the fans stay on full time with the aircon on and the other just cycles on/off when its needed and my temp is fine, specially when i used to live in the north west pilbara 40C+

[blwneb]

yeh when the a/c is on one fan comes on when the ac clutch is engaged, and the other comes on when it gets to a certian temp, and they stay on till kools, i believe there is a problem but not to sure where, maybe condensor blocked, it is clean between rad and condensor, it is original a/c compressor and condesor, from 1991, never been replaced, a/c just serviced, all my knowlegde would of thought radiator prob, but i have replaced, and still does happen.

[V8 Ghia]

Are you running a separate transmission cooler?
When the auto is under load (ie takeoff or up a hill) and running through the radiator, combined with the heat from the a/c condensor will make the temp rise fairly fast.
Are you running a proper fan shroud with the thermos (ie an ef/el shroud)??

[blwneb]

I have a seperate trany cooler put oil stil runns through radiator, and as i am running a supercharger setup, i can only run one fan, on radiator side davies craig 12inch, 130watter, i might try and fit the new ewp110 electric water pump, to flow water better.

[snypereb]

I had a similiar problem i drained my radiator out and clean it out put in back in and ran perfect have not had a problem since!!

[DOMN8N]

some body told me it is better to make your clutch fan so it spins all the time

[blwneb]

cmon guys, has noone experienced this prob, i believe it may be a water flow problem, but radiator is brand new.

[MADED-6]

the a/c is loading the engine up and in this heat u gotta expect the temp to go up a bit but that does sound a bit high might be a water pump there is only one way to find out. change it. it could also be a thermostat but then it would most likely do it with the a/c off aswell. just try the water pump cant hurt.

[EBIIBurner]

probably not right but my car use to do this all the time got a new radiator cap temp is always under the N

[blwneb]

I will do the easier and change the rad cap, before water pump, but still it shouldnt cause it to raise that much, to shut of a/c.

[blwneb]

anymore

[EAman]

check thermostat and heat sensor know a old polish chap that knows nothing about everything and thinks he knows everything about everything pulled his head of waited 6months for some crap backyard mechanic to come round and tell him the head was warped got it machined got the back yarder to come round again put the head on start the thing up and tell jees it heats up quick then it struck him to check the heat sensor and what do ya know it was stuffed

[blwneb]

you mean temp sender or ect sender, i might replace both before fitting elec waterpump