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Chevrolet Impala, Sedan
#1253 of 2014 what should i inflate nitrogen tires too?
May 14, 2005 (8:25 pm)
I have a 2002 impala ls and I just bought new tires and my tire dealer put nitrogen in instead of compressed air,they put 35 psi in and it rode like a brick so I reduced the pressure too 31.5 my question is since nitrogen does not increase pressure as it heats up like air does (3lbs. roughly) should I have left 33 lbs. of nitrogen in instead? I mean does chevy figure the tires are going to heat up 3lbs.which would take them too 33lbs.? and thats why they only inflate to 30lbs.? I just don't wanna waste all the money I put into tires hope some one has experienced something similar and can help me out cause the tire shops all wanna fill the tires to 35 and they handle like sh*t that high thank-you.
#1254 of 2014 Sunroof stuck open
May 15, 2005 (6:13 pm)
Today the sunroof of my 2001 Impala LS stuck in the open position. Anyone have any experience with this? Cost to fix? Is there a manual crank to close it? Appears that one side is trying to close, but the other is not. Any help appreciated as rain is in the forecast....
#1256 of 2014 Re: what should i inflate nitrogen tires too? [chrisis30]
May 16, 2005 (11:39 am)
I have had similar experience with the local tire shop. Every time I have the tires rotated and balanced they seem to choose 35 psi. I don't think they bother to look at the recommended pressure on the car.
I've never heard of nitrogen filled tires, but as an engineer, I doubt the statement that the pressure doesn't increase with temperature. All gases increase pressure to some extent with temperature increase and air is about 80% nitrogen already so I doubt if 100% nitrogen acts much differently than air does. Maybe there is some other advantage like less leakage or less heat build up. Does a nitrogen fill cost extra?
#1257 of 2014 Re: what should i inflate nitrogen tires too? [charlief1]
May 16, 2005 (12:09 pm)
You are correct I checked the hot tire pressure and sure enough the pressure raised 5psi that means it would have been 40 psi when they used 35 psi cold inflation no wonder it handled like a brick! and to answer your question yes they did screw 4.99 out of me for each tire not a whole lot of lost cash but I did lose trust and faith in my tire dealer that I have been faithful too for 16 yrs if they ask you and wanna charge for it "just say no"
#1258 of 2014 Re: what should i inflate nitrogen tires too? [charlief1]
May 16, 2005 (4:05 pm)
Considering the atmosphere is 80% nitrogen, I am not sure what the advantage is other than the money the dealer gets to take home.
#1259 of 2014 Re: Cold Engine Tapping - Carbon on the Pistons [chevyonly]
May 17, 2005 (10:11 am)
It's not the car it is the gasoline. Depending on your part of the country, various "reformulated" fuels are being used to meet emissions requirements. Mechanics are telling me that these new fuel mixtures can carbon up an engine in 7,000 miles or less. Not only can these carbon build-ups reduce gas mileage, but if it gets thick enough the valve can be damaged.
The only solution I know is a routine fuel system cleaner to include the intake system. I run a bottle of Techron in my '01 Imp about every 1,000 miles and do fuel system cleaning at the shop about 7-10K. I've never had any valve clicking.
#1261 of 2014 Re: 2001 chevy impala periodically won't start [johnson2]
May 17, 2005 (8:14 pm)
Check the wire/connector on the ignition module, there are two. One goes to the crankshaft position sensor. If that connection is not good I know for a fact that the car will not start.
#1262 of 2014 Re: 2001 chevy impala periodically won't start [cal2]
May 19, 2005 (1:38 am)
Chevy puts out junk ignition switches that'll give you a no start. It's even worse when you're driving down the road and the vehicle dies.......sometimes it starts back up, and sometimes it don't. You'll never figure it out and it won't drop a trouble code. Luckily, I had a great dealer who caught it on my second visit. Reluctantly, there's so many things than can go wrong it's still best to let the dealer troubleshoot since it's obviously not an ignition switch for everytime your vehicle won't start. It was a scary life and death situation dead-sticking down the road while traffic was dodging me and my vehicle. I felt like a clay pigeon.