Last post on Oct 25, 2013 at 4:31 PM
You are in the Chevrolet Impala
What is this discussion about?
Chevrolet Impala, Sedan
#6 of 49 2001 Impala cranks but no start....
Feb 27, 2008 (9:29 am)
Iv'e had the security problems with my 01 Imapla but a new ign sw cured that. Now it cranks but no start sometimes. The Tech II scan tool showed low voltage to ign module and a crankshaft position sensor fault. I replaced the ign module and it worked for 5 weeks. Thought I had it fixed. Now it'll sometimes crank but not start. No ign from coil packs. I have power at 60A underhood fuses and power thru 15A DFI MDL fuse. Last time it wouldn't start I tapped on the IGN RELAY with a MAG light and it started. Swapped relay with foglamp relay but it still doesnt always start. The CRK PSN snsor is next but it's a bitch to get at. I'm actually looking at a 2008 Malibu and this can be someone else's problem.
#7 of 49 2001 Impala cranks but no start....
Feb 27, 2008 (12:58 pm)
If it is crankshaft pos. sensor, it will be around $250 to replace at a reputable shop (non-GM). I'm looking at that type of replacement, too, but the shop wants to make sure it is the crankshaft pos. sensor and not cam pos. sensor. Since replacing the battery, it died on the road (in motion) twice. The shop got an intermittent crankshaft sensor code, but want to make sure it isn't that and another thing, etc.
#8 of 49 Re: 2001 Impala cranks but no start.... [neustkg]
Feb 27, 2008 (9:44 am)
It just so happens my son in a Chevy auto tech, 12 years in the business. He helps me keep it going. My '93 Silverado has 213K miles on it, thanks to him. The itermittent ign has him baffled too. Everytime I have him look at it, it works OK. The last time it would not start, he came right over and put the scan tool on it and guess what, no DTC's, Diagnostic Trouble Codes. He says he's seen camshaft sensors go bad but not too often crankshaft sensors. It was my idea to replace the ign module for troubleshooting. 200 bucks! He didn't want to replace it unless he knew it was bad. However, my wife said I'm not driving it til you do something cause it had quit twice while we were driving it. Replace something! That's how we used to fixed the airliners I worked on. The CRK POS SNSR is $59 and he said he'd put one in for me since the ign mdl didn't fix it. I'll let you know. Randy
#9 of 49 Crankshaft Pos. Sensor
Feb 29, 2008 (10:30 pm)
Had the above sensor replaced along with the fuel filter (which probably needed to be replaced). I am hoping this does the trick and the problem wasn't something else, like camshaft pos. sensor (knock on wood). Cost me about $330 and I'd like to not spend another $250 or so for the cam pos. sensor.
#10 of 49 Re: Crankshaft Pos. Sensor [neustkg]
Mar 05, 2008 (7:47 am)
My stalling 2001 Impala problem went away when I traded it for a 2008 Malibu the other day. No problems with that Impala for 95K miles til last summer when it began to act up. It quit in Wisconsin the other night 100 miles from home. That was the last straw I guess. At least it was 40 above and not 40 below that night. Waited 30 minutes and it started right up. Stayed in the right lane all the way home cause it kinda shakes your confidence in your car. It's at my son's dealership right now in the back row. If it acts up there, he'll have to fix it. One last thing, on our last trip home, at Powers Lake Wisconsin, the Check Engine light came on!! At least it set a fault so they can troubleshoot it.
#11 of 49 01 Imp. start up noise
Mar 16, 2008 (8:23 am)
#12 of 49 01 Imp. start up noise
Jan 07, 2008 (10:17 pm)
only occationally i have this problem... more often on cold days than warm. after the engine starts it whines for about 30-45 sec. at a high pitch almost like a train horn loud.. annoying. sometimes after the high pitched noise it will stay the same volume but lower a few octives.. the noise is for sure comming from the engine but its so few and far between that i can not pin point it. it still happens when the defrost is off so im guessing that it is not the compressor it was more frequent in near 0*F temperatures but it has been close to 40-50 and it is still doing it.. also my engine fan is running alot more than usual after im done driving. temp is normal on dash. im clueless any help would be great thanks kenny
Jan 09, 2008 (4:54 pm)
ok the noise has been absent since i post that except for today it came on once i was able to get out and pop the hood before it cut out. but it was still short, it sounded like it was coming from the non belt side "the driver side" of the engine. i also figured out that the low pitched noise was not the same as the high pitched or not coming from the same area.. i could not figure it out but both noises were going on at the same time. still baffled
#14 of 49 Re: ???? [kiefk0337]
Jan 10, 2008 (5:01 am)
I had a similar problem with my '94 Mercury Cougar. In my car, I believe it turned out to be the Mass Airflow Sensor or a component of the intake system. What I believe happens is that as the parts wear, they don't function up to full specs. What you might be hearing is the air being pulled past the components in the intake (between the air filter and intake manifold). Think of it as the type of sound of blowing across the top of a bottle. You are only hearing it intermittently because the outside temps are affecting the way the components are adjusting to get the fuel mixture optimized and the mass of the air being pulled through the system. Start making note of the outside air temps when this occurs and see if they are close to being the same. Mine only happened on cold mornings as well.
In my particular case, the car seemed to run fine although I had engine ping at high rpms. I had assumed it was just the age of the car that was causing the ping but when I happened upon the intake air issues and fixed them, the ping was fixed as well. If you aren't noticing any real problems other than the noise (and this is indeed the problem), I wouldn't worry too much about it. It may never amount to anything other than a minor annoyance.
Feb 11, 2008 (1:29 pm)
it was the engine fans.. one of the bearings was going in the engine fan i just replaced the entire thing (houseing everything) cost about 150 from advanced auto and took about 1- 1/2 - 2 hrs