Question about 2007 Pontiac Grand Prix
If you have done this before and have all the tools and parts.... - 3-4hrs. Otherwise 6hrs.
Posted on Apr 04, 2015
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Posted on Jan 02, 2017
as you face the engine the thermostat bell is on the right (drivers side) Follow the radiatoe hose. Remove the two bolts and raise the bell still attatched to the hose. the thermostat is there with the rubber seal. You can gently pry the thermostat out with a screwdriver or something similar. Put in new thermostat be sure it is the same as the old one, and then replace or change the seal (be sure it is the smae size and thickness as the old one as I got the wrong size from Napa) Then replace the bell, and tighten, but not over tighten. I hope this helps!
Posted on Jan 31, 2009
If you want to repair the oil pan I would also check lower engine mount for leaking oil and cracks in anti sway bar near fitting's. This due to engine mount is oil filled. OEM sway bar is made of tubular steel and they crack easy. Replacement sway bar is solid steel. Here's the kicker. When they pull the lower frame to service oil pan. The engine mount and sway bar are attached to that frame. A honest mechanic should only charge for parts ($35 for mount and $100 for sway bar) and maybe a extra hour. My mechanic did all in 5 hours. FYI gasket is only $35 bucks. Good luck
Posted on Mar 02, 2010
I don't remember ever seeing a Jeep that did not have an electric fan as a supplement to the mechanical one. The electric one should come on when the A/C is engaged. Jeep radiators are far smaller than they should be due to ground clearance issues. The only way to make them work is to enhance air flow through them by using electric fans. (or adding an extra row of cooling cores such as in the special tow package). When the vehicle is moving there is enough air flow created by that to eliminate the need for fans altogether, but you have to stop sometime!
Your a/c compressor adds to engine loading (why it pulls rpm down) When at idle with a/c on, the engine "thinks" it's going up-hill and produces more heat. The heat needs to be scrubbed from the system or it can and will overheat.
Make sure that the clutch fan is engaging. It spins free when cold but should lock up after it gets hot. Add an electric fan to the system...check with several scrapyards and see of any Jeeps like yours have one and take it.(some electric fans are on the drivers side and some are directly in front of the mechanical one) If equipped, there is wiring for it in the car. If necessary you can add one either inside or outside the radiator and operate it by way of a switch and relay or just a switch. (there are aftermarket ones that are "slim line) and are designed to fit between the radiator and the front grille) You could also add an external transmission cooler...in doing that, it will take some of the heat load off the radiator. Also make sure that the new radiator has the same number of core rows as the old one did....some shops mistakenly put ones with less cores in when replacing due to cost. In a system with a marginal design this can become critical. (most radiators come with one two three and even four rows)
Once the problem has been solved, don't forget to put the 195 t stat back in or the engine controls won't work properly.
Posted on May 18, 2010
Are the cooling fans coming on during normal operation? If your ac works turn it on and see if it overheats with ac on.If it does not overheat the fans are not operating properly under normal operating conditions.The ac will force the fans on. What you can do to start is just let the car idle in park and see if fans will come on normally. The coolant temp should reach 200-210 before the fans will come on. Make sure the air is off at this time. If we can verify the fans are working or not working properly we can go to the next step. Let me know what you find out.
Posted on Oct 08, 2010
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