SOURCE: 2004 Nissan Altima Wanders at Highway Speeds
Depending on the tires, it could be a couple of things. I would have the alignment checked. If there isn't enough toe-in, you will get great wear from your tires, but the handling will be loose or will wander.
I had new tires put on our Nissan Maxima and they did a reallignment with not enough toe-in. It became very twitchy at interstate highway speeds. Just a little toe in made a huge difference. I knew what to ask for because I have some racing background. We could go faster with less toe-in, because it reduces the resistance on the rolling tires, but also makes it more sensitive to the road surface, side winds and tire wear.
But there also shouldn't be any slop in the tie rods, etc...
SOURCE: replacement of a head gasket on 2.5 liter nissan altima 2002
frajogag: First off, be aware that these bolts are "torque to yield" bolts (streach bolts). What this means is that instead of torqueing the head bolts to a specific torque specification, they are torqued down to a set spec and then tightened by rotating the bolts a certain angle, like 90 degrees. and all of them are turned the same amount.
This means that the shanks of the bolts must be checked to make sure they are not too thin (or the bolt has already stretched beyond limits and is prone to snap if used)
Here is how you check the bolts. Measure the bolt using a micrometer, at the base, or within the first 13mm from the end where it threads in. Then go to about 10mm before the threads end heading toward the top of the bolt. There should not be more than a 0.23mm (.0091 inch) or less difference or the bolt should be discarded.
Torque the bolts down to 98.1Nm ( 72.ft lb)
Looking at the head from the side, so you are looking at the full length from side to side, I will number the head bolts in this fashion.
#1 & 2 are directly in front of you and in the center of the cylinder head crossing it width wise.
#3&4 are to the left of #1&2, / #5&6 are to the right of #1&2
#7&8 are to the left of #3&4 / #9$10 are to the right of #5&6
Now, you have the sequence.
After the initial pull, back off all the bolts in the same sequence and then retorque them to 36 Nm ( 28 ft lb)
Using a torque angle wrench or having the ability to accurately judge turning angles. Rotate (clockwise) to a 75 degree angle. do this to all the bolts using the sequence I had provided.
Rotate the bolts (clockwise) 75 degrees again on all bolts in the same sequence. The proceedure is complete!
SOURCE: 2004 Nissan Altima crank positioning sensor
driver side under water outlet (upper water outlet ) good luck
SOURCE: Nissan Altima tring to change my transmission fulid and filter
thats why you have to remove the frame and for this you need an engine support and the average mechanic will charge you arround 100 bucks to do it
some rental stores have them some dont good luck eithor way you go but for god sake be carefull
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