What could be wrong with a Nissan Altima that cranks but wont start?
The fuel pump fuse is blown or the fuel pump has failed.The crank position sensor has failed. Turn the key to "Run"Listen for the fuel pump to run for a few seconds then stop.If you don't hear the pump run:1) Turn the ignition key to the "Off" position and remove. Check the fuse in the engine bay fuse panel. This is a panel encased in a plastic box and usually has "FUSES" printed on the cover. Inside are high draw, high amperage fuses and relays for things like the fuel pump. Find the pump fuse, pull it and look to see if it's good. If it's blown, replace it with same amp rating fuse. Check again to see if you hear the pump run. If it does, you're lucky. Press on. Car should start. If the pump still doesn't run then see 2 below.2) If the fuse is good, then it's a good chance the pump has failed. You will have to tow the vehicle to the shop; it's dead in the water.If you hear the pump run and the car cranks but will not start, chances are it is the Crank Position Sensor (CPS). The CPS feeds info to the engine management computer telling it the crankshaft is rotating and to allow fuel flow and ignition to occur. If the computer doesn't get the CPS input, the car will not start. Again, dead in the water and a tow to the shop.Just had this experience on my '98 GMC pickup ...good pump, engine spins, no start. A flat bed ride to the local shop and ...ta-da! ...OBDII code reads CPS malfunction. Four hundred and some odd bucks later, she's up and running like a top.
Why would I ever use sport mode in my automatic transmission car? Will this increase fuel efficiency or is it simply a feature that makes for more fun when driving?
Engaging sport mode basically encourages the car's powertrain to favor acceleration and power over fuel economy and smoothness. For instance, if you are accelerating from a stop in sport mode, the car will hold each gear a bit longer than it would in regular mode. This helps the engine reach its maximum power output, which, for your car, falls roughly between 4000 and 6000 RPMs.Fuel economy will likely suffer somewhat when using sport mode because the engine will spend more time at higher RPMs than it would in regular mode at the same speeds.In theory, the car should be more fun to drive in sport mode, though that of course depends on what you think of as fun. One practical application would be when you are traveling in the mountains and want to have ample power available going uphill and also to hold gears longer going downhill to provide some engine braking.
How many oxygen sensors does my 2002 nissan altima 2.5s have?
Hope Robert had to get that out of his system. 2002 first year for QR-25 Altima motor did have some issues with cat converter failure. Several recalls too. The tin shield around the cat converter is important many aftermarket cats don't have heat shields and that may overheat the front of the engine block radiator fans blowing cat and exhaust heat back onto the engine block. Your car has two oxygen sensors one at the convergence of the top of the cat and one after under the cat. P0420 cat converter is weak code. Problem is if the cat breaks apart pieces of the honeycomb blow back into the motor and ruins the pistons piston rings and Cly walls. If your motor produces 165 to 175 psi compression then go ahead with just the cat converter and Any O2 sensors that either get stuck or don't work after the cat swap. Good Luck
Wheel bearing noise and Firestone ripping me off?
Hello everyone and first sorry for my English. Yesterday I took my Toyota Corolla 2005 to Firestone to get it inspected, because my car had a noise issue. It sounds humming/howling almost like a motorbike, the sound gets worse as I gain speed. After the inspection the mechanic told me that my front wheel bearing had failed. Then I paid for $350 for replacement. After 3 hours of waiting the mechanic was back telling me the noise was still there because they just found out the rear wheel bearing was bad too, but the front one was the worst. I said I would come back later. When I took my car and drove back home, the noise was still here and there and it's not any better than before. So, were they trying to rip me off, or both front and rear bearing were bad ? I don't know what to do now, so confused :(
Why is antifreeze coming out of the exhaust? What can I do?
First, you're positive that it's coolant? Green and matches the stuff in your radiator? I ask because you will have a certain amount of condensation developing in the exhaust pipe and this increases in cold weather so it may look like a bunch of water is coming out when it's just normal condensation.If you're sure it's coolant, your vehicle should also be running poorly as that means your head gasket is blown and coolant is getting into the cylinder(s). Coolant in the cylinder is very bad and you should stop operating the vehicle immediately or risk further (more expensive) damage.
Does the G35 make a good tuner car?
Before the designer is stolen he is British whom designed the 350z. Both these cars make great tuner cars and to pick on the z only really shows a opinion and not a fact.As this car is seen as a great car worldwide. And is famous in drag races drifting and motorsport again will add link below. The G35 or 350gt is a great car and until recent times is appeal is only just taking off.This is due for many fans of the Earlier Skyline models,being let down by these less hardcore cars. But recent times and with the GT-R coming out some people are swaying to liking the g35 350gt. Both these cars can be tuned up and create nice levels of BHP and some decent looks. The best thing to do is research the G35/350Z forums and see what mods and specs other owners are adding and at what cost.this wil then give you an idea of money needed and for what gains and of course the best mods to get and ones to stay away from,And often traders use those forums and offer discount and group buys. One more thing please dont call these cars rice,rice is what you boil or people whom own low budget Cars not having to be Japanese made just look sporty with a Japanese style but of low cc.Not the same class as these cars. http://www.youtube.com/watch?v=ozPHqA43X... http://www.youtube.com/watch?v=rp3rWnF4n... http://www.youtube.com/watch?v=6ZBfat6ar... http://www.youtube.com/results?search_type=search_videos&search_query=g35&search_sort=relevance&search_category=0&search=Search&v=&uploaded=&filter=1&page=1 http://www.aprperformance.com/index.php?option=com_content&task=view&id=162 http://www.youtube.com/watch?v=MOekOGYTPh4 http://g35driver.com/forums/ http://www.6mt.net/ http://www.350zclub.org/ http://www.350z-uk.com/ http://www.ztuned.com/ http://www.350z-tech.com/zwiki/350Z-TECH http://www.350zforum.com/ loads more forums on search engine for both cars.
What problems go along with a bad catalytic converter?
A clogged catalytic convertor causes the symptoms of a loss of power when accelerating or going up a hill. This is an often overlooked cause of loss of power, can cause check engine fault codes and lights, and mechanics will often change a few parts unnecessarily , especially if it is only partially plugged. A couple ways I check for plugged cats when a low power complaint is a symptom, and other obvious basic maintenance items have been checked for service is to have someone hold the rpm at about 1800 to 2000 steady. Then check for a good push of exhaust with my hand from behind the tailpipe. A plugged or partially plugged cat typically leaves a hot sickly feeling exhaust flow from the tailpipe. Compare to a known good working car nearby, known to be performing properly and with the same amount of cylinders. That slow , hot sickly flow at 2000 rpm compared to the hard push blowing your hand away of a not clogged cat is a dead giveaway, and I have NEVER misdiagnosed a plugged cat , or made false diagnosis with this method. Another way is watching a vacuum gauge connected to the intake manifold. When revving up, if the exhaust is plugged the gauge reading will climb then begin to slowly drop as the exhaust pressure builds up. Further testing will be needed to verify which part of the exhaust is plugged. Diagnostic by codes is unreliable and until now I had not heard of it. A code p420 only refers to catalyst efficiency. And can be set by faulty o2 sensors. Removing the exhaust and testing for engine power returning to normal works. But the hot sickly flow has been most accurate with my experience, in several cases where shops had missed it, were stumped and called me to come check. They are always embarrassed for missing the simplicity, but need not, as cars and their complicated electronics and even age old problems can lead to loss of power without any immediately obvious cause.