rich

I have a 422cuin iron blockwith an a4 and a 3500 stall. I installed a lt1 radiator with a 1.25 inch thick core that's 1/4 inch thicker than stock. Fans are working, pcm is set to 160 turn on, I do have a whisper cold air duct it does block the radiator but I don't have the bottom that goes down to the spoiler, I have an asp under drive pulley but it idles at 950 rpm. I have installed a restricter plate with a 7/8 hole in it no t-stat.
The car runs cool but if I don't keep it moving 30 to 40 mph it will over heat every time. It could get up to check gauges hot but 1 pass on the highway and right back down to 210. I ordered a 160 t-stat and will install it next week. I am also considering an electric water pump. any ideas will be help full.
Thanks Rich

technical

Are your fans (stock?) blowing in the right direction?

Bill's 02 Z-28 SS

Hi Folks
the fan kick off at 30 or 40 mph - your problem sounds like a fan problem. as pointed out above, check the fans and which way they working. They should be pulling air.
Bill

blue01ta

iTrader: (4)

If that doesn't work is your antifreeze mixed 50/50? Too much water and it will get warm on ya. Also I wouldn't trust the factory gauge. Check the temp seperately

rich

tHANKS gUY'S I will look into that. the fans are stock. The coolant is brand new dex cool 50/50 mix. The guage reads 210 from 200 to to 230 actual temp per the scantool. It is most definatly getting too hot. Thanks Again Rich.

shouldaboughttheZ

iTrader: (8)

So you are saying you have no t-stat? I saw where you ordered one. This could be also the problem.

1QuickT-A

iTrader: (12)

Put the new t-stat in and buy an electric pump..