Help Please.... My Balt Keeps Stalling Out on Me!!
This is kinda long, sorry, but this issue is beginning to stress me out to the point I can't take it anymore.
I have an 06 Balt LT Coupe. It has 63xxx miles on it, auto tranny, 2.2 liter. I live in Ohio, and it's been pretty cold here lately (single digits).
Back in the first part of December, my car stalled out on me. It threw the check engine light. My husband and I took it to a shop that we trust, and he cleared the code. The code thrown was Throttle Position Sensor something or other. I trust my mechanic more than I trust my own father, and he said that clearing the code had a 50/50 chance of fixing it on it's own.
About a week later, it stalled out on me again (no code thrown this time). My husband is a body guy who knows a pretty good amount of mechanical stuff, and he thought it needed a new fuel filter. We took my car to a local (different than my "regular" shop, but only because of convenience, and the fact that i needed tires before winter also) place, and they changed the fuel filter, put on the new tires, and gave me an oil change. Within a couple of days, it stalled out again. I did some research on the net (specifically HERE) and he cleaned out the throttle body. (We didn't really want to buy a new throttle body if we didn't have to, and you have to buy the whole body to replace the sensor.)
My car ran fine just under 2 wks. (Which of course meant I thought it was cured.) 3 days shy of 2 weeks later (on Dec. 21), I was hit by someone running a red light. My car was out of commission (I was in a rental) for about a month.
The rental was turned back in on Jan. 17. I couldn't have been happier. I had ZERO problems with my car until February 2nd. My car stalled out on me as I pulled into my parking spot at work (very early in the morning, so kinda cold outside), and then, when I went to leave, I had problems starting it. I finally started it, but when I did, the check engine light was back on. My husband borrowed his boss's computer, ran the codes, and got the throttle codes again, so we decided to change out the throttle body. He ordered the part from Chevy, and it was delivered that day. (It was in stock, which makes us think that this is a common problem.) My husband installed it on the 4th. Later that evening, we went into town (we live about 8 miles out of town in the country) for dinner, and it stalled out again. My husband hadn't cleared the codes, and thought that maybe that had something to do with it. I took my car to his shop to have him clear the codes on the 9th (no stalling in between the 4th and the 9th). While he was clearing the codes, he noticed ANOTHER code for misfiring on the 2nd and 4th cylinders, so we hit up AutoZone and got new spark plugs. He replaced those a couple of nights ago. Yesterday (when the highs here were only in the teens), my car ran FINE all day long. No stalling whatsoever. Today (when the highs were in the mid 20s), it stalled on me at 430 am when I pulled into my parking spot at work, AND in the afternoon around 230 pm when I got home.
Any ideas, guys? My husband doesn't have a clue! I've got a new fuel filter, new throttle body, new spark plugs, AND I put dry gas in on every fill up (once every 2 weeks). There is absolutely NO. WAY. that this is a case of water in the gas! We are pretty close to the point where we're about to take it into our mechanic and tell him that if he has to keep it a week to figure out the problem, he has to keep it a week. I've noticed that it only stalls out when the car is at normal operating temperature (about 190ish). If I make a short trip and get to my destination while the temp is only at 150ish, it doesn't stall.
When it stalls, it's only when I'm coming to a stop (parking at work, stopping at a stop sign or light, etc). When my tach. gets around 500-600 RPM, it just wants to go below 500, and that's when it stalls out. It doesn't do it EVERY time, though. For example, it didn't do it at a stop sign a half mile from my home, but it did it when I pulled into the driveway less than 3 minutes later.
PLEASE ... Any ideas would be appreciated! (Especially ones that my kinda-mechanic hubby can fix!!!) Thanks!! :-) And thanks for taking the time to read my "book"!!