What would cause gas fumes inside car just started 2 weeks after fuel pump replacement

what could be the cause of this besides a fuel cap that's not on tight enough?

and front wheel brakes

Hello I have 4 codes on my nissan maxima

My abs light is on and so is the check engine light. Speedometer does not work. If I drive sometimes it will ,then cut off again. When it does start working the abs light will come off but not the check engine light. Any information would be appreciated.

I just replaced the front pads and rotors on my 2002 Nissan Maxima and now there is a constant rattling noise. It sounds like keys clinking together. Applying the brakes does not affect the sound.

As you can see I have 3 issues. The rear defogger worked at one time and stopped - Checked the fuse and it's ok - The cig lighter worked once and stopped again the fuse is okay - Now I have the AT light, it appears to come on when I turn the key on and goes off when I start the car do I need to worry about this? I've already have replaced a couple of sensors and a ignition coil on the number 4 cylinder I don't need anything else to go wrong with this car seeing it's the only one I have and really can't afford anything else to wrong with it. Any help you can give I will appreciate it very much

Vehicle has less than 80.000 miles

I have brought my car to three different mechanics and no one can figure out why my car is overheating. Fans working fine, pressure test no leaks, hoses fine, radiator fine. They keep saying thermostat. I have changed it twice. Now they are saying they need to check the head gasket but I don't get any smoke or anything when I drive it. It doesnt overheat when Im driving around town stop and go, only when I am driving a straight run for about 10/15 minutes and the it just gets super high. Now they want to change water pump, but doesnt know if that is what it is. I feel like they are just guessing. I am a single mom and cant afford to just keep guessing and I dont want to get stuck. Please help?

i have cleaned out radiator to see if it had any blockage but doesn't and everything else on the radiator is fine water pump is fine i have replaced thermostat with a new one ,its ok for about half an hour sometimes but when it does over heat i cant go over 2 on the REV meter otherwise it starts hoping a wee bit and slows right down and every mechanic i go to doesn't know whats wrong with it i just need it fixed for my new baby girl that's due soon pleeeease help!!!???!!!

I just bought the car and the seller did inform me of what he considered to be a small insignificant oil leak in the front of the less than a week of driving it, it now leaks enough oil to leave a stain of more than 4 inches no matter if I'm parked on a slope or even on a more leveled out area. Yet when I pull the dipstick to check the oil levels and mostly out of extreme fear of it being completely dry, naturally as anyone would I think, the read on the stick is still showing at least 1 1/2 quarts over the full mark! Can u tell me an average estimate for cost to repair something like this, and should it be done by a specialty car care center or is it something basically common enough to trust to a certified mechanic anywhere?