Originally Posted by grgguy
So I've been searching the threads and can't find the answer. Here's the deal. 94 Z28 w/ 96k on it. When driving on the freeway or above 45 my temp gauge rides right at 180 or a hair above. But when I get into traffic it start to rise. It will go up slowly until I get it up to speed again ( all the way to the 3rd hash mark ). Thing is I don't want it to overheat. So here's what I've done so far .
1 coolant flush
2 new thermostat
3 new temp sensor on water pump
4 looked for debris between the radiator and a/c condensor (none)
5 New radiator cap
None of these things have helped , I've checked the fans and yes they are coming on. I took it to the local gmc dealer and they are saying i need a new radiator? Saying there's a blockage restricting the flow. Wouldn't the coolant flush have cleared that out ? They want 500.00 for it installed
What else could it be ? Or do I actually need a radiator
Sounds perfectly normal to me if you don't have the A/C on.
If the A/C is not on the low speed fans don't kick in until temp reaches 225°
The high speed fans will kick in at 235°
96 T/A, Black/Graphite Leather, T-Tops, 6 speed, 10 speaker Delco/Bose "Monsoon"
Original owner, 188k miles and counting.
Total engine rebuild at 187,020 miles.
AIR delete. Bored .030 over.
Comp cams Xtreme Energy LT1 266HR-14 street cam and springs..
lift I .500 E .510 duration I 266 E 276