Do you think you could post that manual again, I just bought the truck, and I'm fixing it up a bit. The vehicle should slowly reach operating temperature and the heater should become warm. Did they replace the thermostat? A lean mixture tends to produce more nitrogen-oxide pollutants, and, in some cases, it can cause poor performance and even engine damage. Answer I have a 2002 that I'm having the same prob with. You will need a few tools.
I use ultra-grey high temp. If you'd like to check your coolant level yourself, make sure the engine is cold or at least the vehicle has been off for an hour. Push down on the black retaining clip and disconnect the bulb harness. These are the steps that I follow, and I have always had good success finishing the repair this way. Fit the housing over the thermostat and install each of the four bolts, starting by hand and tighten to the tension they were prior to removal.
I'm gonig to have to disagree with you on that one insanity. I would really appreciate it. If I drill or make the weep hole larger the thermostat. It sounds like it may be your Rear Air Control Circuit. Clean all mating surfaces thoroughly, be careful not to gouge or score the aluminum. Nissan has redesigned the 2001 Altima, so it's impossible for the layman to access the flange without special tools. There are a few issues with these vehicles, though, one of which I would like to go over today: the replacement of the thermostat.
The thermostat is normally located in the aluminium elbow that the top radiator hose connects to. To install new thermostat: Clean both sides thermostat housing and engine side from old silicone gasket, make sure to install the new thermostat with the air vent on top side, put 4 bolts back. Removing the thermostat will make your engine much slower to warm up, and will make the relationship between your coolant temp and engine temp a bit sketchy. Of course, watch the temp gauge and if the temp rises above normal, stop the vehicle, let it cool and start the air removal process over again. The engine oil will be its usual normal color. I have the same setup as Orion describes.
Your radiator is actually a more efficient device than your actual engine. The thermostat i understand The heater core by pass i don't,what does that prove? We briefly met under the hood of my truck and he assured me that the repair was similar to other thermostat replacements I had done once some twenty years past. It is difficult to see and even harder to get to, but it can be done. Remove the thermostat noting the direction in which it was installed and remove the thermostat. To lift the reservoir push it to the right, then lift up.
I think there are 4 bolts holding it on. I would go through this process at least three times. I elevate the vehicle's front with jack-stands, a lift, or by parking on a sharp slope. I also got a ratchet handle that had a long extendable handle. Make sure the surface is covered but not overdone. There are actu … ally two hoses that connect to the thermostat housing-one to the radiator and one to the water pump.
With the housing off, it can be removed with the mating surface down and the hose opening facing the rear of the vehicle. When replacing the thermostat use Indian Head … gasket seal to hold the new thermostat in place so it does not shift and fits snugly in the housing. Thanks again for your assistance. Take care that the new thermostat is correctly located in its recess and the old gasketing has been completely removed and that the new gasket has a smear of gasket cement on it. You can remove it through the hole, however, to reinstall, you must do so through the wheel well. The thermostat stays closed until it reaches temp, then pops open to cool things off.
Same reason you don't want to run really cold plugs in a normal engine. A hose causing overheating,explain that one. This is called a lean mixture. No, form my eperience replacing that sucker the thermostat on the 1996 Nissan quest is on the left side of the engine, where your drive belts are located. So, tricky, but doable, and for me it saved me from taking alot of crap apart. In the front of the engine you can follow the top hose from the radiator and it will lead you directly to the thermostat.