Re: starts one day not the next this happened 2 months...
If your starter was going your would hear a clicking noise from it. My 03 Aztek did the same thing. I was told it was the Egnition Switch and the BCM, replaced them and had it reprogrammed and it was not the problem. Turned out it was 3 yellow or red ( I forgot) little wires under neath the brake pedal that were losing connection and one was corroded
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first,change the air filter(should be changed EVERY 2 years)then use redexe/wynns injector cleaner (1 can to 1/2 tank) volvo's dont like dirty fuel AT ALL.after doing the above if the problem still shows get it on an exhaust anilyzer,that will tell you how healthy your engine is......also,very important with volvo,check the hose from the inlet manifold to the brake vacuum tank,if it looks "old"change it (also cheap)
firstly try with the spare key, sometimes they become uncoded. Then if you have a voltmeter check the battery to make sure there is still a good level of power in it before getting the started motor cheked.
I am no expert, but I just had a similar problem. The car would shake and buck when accelerating. It finally just died and would not start. After sitting for some time, the car would start and run a while, then do the same thing. I thought fuel pump. The dealer diagnosed distributor. After replacing, the car is running perfect. Something to think about. Good luck.
you have 2 computers under your consal one is the body controle and the other is the main computer. They are pluged in to eachother i had same problem and replaced both and every thing is workin fine other than getting my stereo codes back in so i can listin to it. hope this helps
The first issue is probably a worn out blower motor which is usually the first part of the car which everything else is built around. actually not really that bad you just might have to move a few things out of the way. You may be able to test the motor, and switch with a multi metor...did I forget to say it may be the switch..probably not but worth a look.
The other two, and possibly all of the problems could be as simple as a charging system issue like bad connections and whatnot. With the complicated emmissions control and fuel injection computors even a slight issue with the charging system could cause all types of annoying problems that will probably get worse. The fuel trim is set by the computor and the computer is a learning type, where it changes trim settings slightly to optimise economy. If the computor and sensors are not communicating properly it could easily make your vehicle run slightly rich, and fuel cool itself accidentally. Fuel cooling isn't a function of the computor it would be a symptom of a problem that left unchecked could result in a computer meltdown.
I am a die hard optimist, on the outside, check the simple things first like ground connections, and what not. Assume it will be much worse. If you don't have a factory reccomended thermostat then that could keep it from warming up properly. So check that too. I haven't gotten too far into many azteks yet but mayby I'll look this stuff up for you.
these early injectors its more likely the prblem try some chevron injector cleanor see if starts running better if it does and returns ur injectors probrably need replace go rockauto.com if they do theyre cheap