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Chevrolet Impala Spark Plug Replacement

25 messages,  Last post on Sep 02, 2008 at 7:13 AM

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#20 of 25 Re: Spark Plug Replacement [nosirrahg] by bena8837 Sep 13, 2007 (7:29 am)
Replying to: nosirrahg (Sep 11, 2007 8:37 am) I took a 100 mile trip today. When I got to my destination I thought about taking a look at the A/C Compressor to see if it was cycling on/off. I never noticed it to cycle off, is it suppose to, how does it work? Replies to this message: nosirrahg (Sep 13, 2007 9:52 am) bena8837 (Sep 21, 2007 4:24 pm)
#21 of 25 Re: Spark Plug Replacement [bena8837] by nosirrahg Sep 13, 2007 (9:52 am)
Replying to: bena8837 (Sep 13, 2007 7:29 am) I don't know that I've never noticed mine cycling on/off (either visually or aurally), like I used to in previous cars. I know if I turn the button on the dash on/off I can hear the compressor kick in and out, but in normal driving with it on I never notice it cycling. If could just be that because of your surgery you're not taking longer trips, and over the summer you've probably been running the AC more, which combined are hurting your gas mileage.   I've noticed over time that my gas mileage typically improves in the summer, but the reason for that is I'm not delivering/picking up kids from school at that time, so even though I'm running the AC more I'm also actually driving more than idling. It's always September when my mileage drops because it's still hot AND I'm sitting in school traffic that I notice a drop and think maybe something is wrong when it isn't.   If your car has the 3.4, do you have the driver information center that tells you your fuel mileage and such? If you do, one thing you can do is reset it each time you fill up the tank, not only on the gas mileage but on the average speed as well. I've done that since day one on my car, and I've seen a definite trend between lower average speed (due to idling and such) and lower gas mileage. So whenever I see my mileage average is low, I toggle over to the average speed indicator...if it's low too (as in under 30 MPH) then I pretty much know why my gas mileage is bad. Replies to this message: bena8837 (Sep 21, 2007 4:24 pm)
#22 of 25 Re: Spark Plug Replacement [nosirrahg] by bena8837 Sep 21, 2007 (4:24 pm)
Replying to: nosirrahg (Sep 13, 2007 9:52 am) I still haven't resolved my fuel consumption problems in my Impala. I just bought a scanner/code reader but am having problems getting it to work or to power up off my car. This is the way it is suppose to work according to the individual I bought it from on Ebay. I have checked all the fuses in the car and they all checkout ok. I have also checked the terminals in the OBD Connector and it appears I have power between terminal 5 & 16. Any Ideas, any help would be greatly appreciated. I have already written the person who sold it to me, new. He has not responded, I just got it today. Thanks
#23 of 25 Follow-up / Halo plug experience by nosirrahg Sep 23, 2007 (8:29 pm)
Earlier this summer I had a set of "Halo" spark plugs intalled in my 2000 Impala 3.8l which were supposed to provide a gas mileage improvement, but unfortunately I never saw any improvement, and in fact I had problems show up almost immediately with a missing problem that would kick in when lugging the engine somewhat when going uphill at modest speeds (especially with the AC running). I noticed the metal posts on the plugs where the wires connect to the plugs were the screw-on type, and these tended to work themselves loose over time. Tightening them up would help somewhat, but the problem would never go away.   I finally got fed up with the missing problem and went and bought a set of AC Delco iridium plugs and put them in this weekend. I started with the #2 plug knowing it was the most difficult, and when I finally got this plug off it was broken. The problem is I don't know if it was broken when my mechanic installed them originally (which IS when my missing problem began), if I could have damaged it mid-summer while trying to tighten the metal posts, or if it only broke as I was trying to remove them this weekend. I doubt I damaged the plug tightening the posts, since the #2 plug is the hardest to get to, and I'd think if I'd break one it would be one of those I could get a better handle on. Either way, I know the car runs perfectly fine now that I've gotten the Halo plugs out of there. I've gotten so accustomed to the car missing at set points on my daily commute that I almost feel like I'm driving a new car now that the problem has been resolved.
#24 of 25 Re: Spark Plug Replacement [bena8837] by kaleighnmatt Sep 28, 2007 (1:36 pm)
Replying to: bena8837 (Aug 18, 2007 4:48 pm) My firned told me that there this tool that you use by, taking off one of the front motor mounts and replacing it with the tool.the it makes the motor tilt, he says its easily accessed after u get the tool. maybe u can rent the tool , i duunno.
#25 of 25 A/C Controls & Interior Lights Problem by bena8837 Sep 02, 2008 (7:13 am)
As of late I have noticed that eventhough the a/c is turned on when I start the car, it does not come on. I have also noticed that the dash light are on but very dim. After I drive for a bit I notice that the interior dash lights brighten and the a/c starts blowing. This is on a 2002 Base Model Impala 3.4 with 61K miles. I do not get any mil so I have no idea what is going on. Has anyone had this problem or does anyone have any suggestions as to where or what to check? Any help would be greatly appreciated.   Thanks

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