- EPA caught VW cheating - how does the car know it's being tested? - 8 Updates
- Wafer Switch Contact Lubrication? - 2 Updates
- Silicone rubber , longterm structural integrity - 1 Update
| micky <NONONOmisc07@bigfoot.com>: Sep 20 03:46AM -0400 In alt.home.repair, on Sat, 19 Sep 2015 04:45:38 +0000 (UTC), Ewald Böhm >being tested for emissions. >Since almost no states use the OBD method, that's why I asked how the car >knows it is being tested. Maryland used OBD on cars new enough. That includes my 2000 car, but I don't think included my 1995 car. (For the 1995 it used the dynamometer and tailpipe stick) I think when I turn 70, if I don't drive too much, I won't have to be tested. Or my car. |
| Cursitor Doom <curd@notformail.com>: Sep 20 11:21AM On Sat, 19 Sep 2015 10:45:01 -0400, Ed Pawlowski wrote: > Do you know of any claims denied because the owner did not get an oil > change? Dirty air filter? Sorry, I should have mentioned that the position I set out is that under English law and other jurisdictions will no doubt differ. |
| John-Del <ohger1s@aol.com>: Sep 20 05:50AM -0700 > has a 2009 Chevy LT between the frame rails. > Officially it needs to meet the requirements for the 2009 vehicle the > LT was originally supplied for (determined by the engine number). Depends on the state. In CT, the car only needs to pass the test for the year the car's VIN indicates, assuming they test old cars (CT doesn't on cars earlier than 1990). |
| "Bob F" <bobnospam@gmail.com>: Sep 20 07:41AM -0700 . wrote: > Earth and serendipitously, by the failure of his early attempts > to create a clean room, discovered the grave neurotoxin > danger poisoning us all. Thank you for that little bit of education. |
| sms <scharf.steven@geemail.com>: Sep 20 07:54AM -0700 On 9/19/2015 10:54 PM, Ewald Böhm wrote: > monitors (the numbers of each are depending on the year of the vehicle), > it is absolutely NOT a requirement to run the OBD scan. > Look it up. I did. You said it yourself. You can't pass emissions with pending codes. They have to run a scan to check this. That's why before they even stick the exhaust gas analyzer into the tail pipe they read the codes. No point proceeding with the test if there are unset codes, though if you're paying for the test they will complete it to check for other failure modes as well. At least that's the procedure for the four vehicles I have had smogged every two years for the past 20 or so years. Also the procedure at the repair shop my relative operated until he sold it last month, and he probably did 3000 or so smog checks per year. I guess you could claim that it is not a requirement to run a scan, it's just a requirement that you can't pass with pending codes and the only way to check for pending codes is to do a scan. If there is another way to check for pending codes other than doing a scan you would be correct, but I don't think that there is. |
| sms <scharf.steven@geemail.com>: Sep 20 07:56AM -0700 On 9/19/2015 10:51 PM, Ewald Böhm wrote: >> of the states do not use a dyno any longer. > I just had mine tested, in California, and they used a dyno. > No OBD hookup whatsoever. How did they check for pending codes if they did not use a code scanner? You can't pass with more than two pending codes (one on some years). That shop would be shut down by the state if it was found that they were passing cars without checking for pending codes. |
| sms <scharf.steven@geemail.com>: Sep 20 08:00AM -0700 > many instances of people - hobbyists and mechanics alike, screwing > with emmission controls in an attempt to defeat them and get better > mileage and power, and getting (usually) neither. That was the big problem in California. A significant number of out-of-compliance vehicles were causing most of the pollution. Even though percentage-wise the number of such vehicles was small, in absolute numbers it was large enough to cause a problem. The "catalytic converter test pipe" was popular for a while. But as you said, in most cases, all the tampering with emissions controls did not have any effect on mileage and/or power. |
| kludge@panix.com (Scott Dorsey): Sep 20 12:12PM -0400 >> No OBD hookup whatsoever. >How did they check for pending codes if they did not use a code scanner? >You can't pass with more than two pending codes (one on some years). They look for the light on the dashboard that indicates codes have been logged. In some places they always use the scanner to make sure, for instance, that the ECU wasn't reset immdiately before taking the car in for inspection. In some places they do not. --scott -- "C'est un Nagra. C'est suisse, et tres, tres precis." |
| Phil Allison <pallison49@gmail.com>: Sep 20 03:39AM -0700 jadney wrote: > This question has bothered me for a long time: > What, if any, lubrication is appropriate for wafer switch contacts? ** Switch contacts need no lubricant in order to work, after all, new switches are supplied without any applied. Eventually, contacts may need cleaning which requires a hydrocarbon solvent ( but not Freon or Alcohol ) mixed with and a bit of light oil to protect worn metal surfaces. If the contacts are accessible, you can * sparingly* apply the mixture with a small artist's brush - if not, then you have to rely on capillary action to get some solvent inside. Then you rotate the switch so it can clean itself. The most effective and harmless products for the job are WD40 or CRC 2-26 both of which contain a mixture of Naptha and light mineral oil in a ratio of about 8:1. .... Phil |
| Chris Jones <lugnut808@spam.yahoo.com>: Sep 21 12:11AM +1000 On 20/09/2015 14:01, jadney wrote: > I'm comfortable with rather ordinary grease for the rotating shaft bearings, etc, but the contacts are different material and can't afford the insulation between contacts to be compromised. > I'm pretty sure Tek used to lube these with something in the old days, when you shipped scopes back to them for cleaning and recal. Yeah, I know, that was a LONG time ago. I think Tek even had lube kits that you could buy that contained suitable lubricants for different areas. > This is a general question, not related only to Tek scopes. Electrolube sell contact grease and contact oil. I have used these but I don't really know if they are good as I have not done controlled experiments. The MSDS lists some ingredients (including an anti-oxidant iirc), in case you wish to research it. In the past I have found that some of their aerosol cans tend to have quality problems e.g. leaking from around the valve. Some old fluke meters had service manuals which used to warn against removing the grease from the rotary switch. Chris |
| N_Cook <diverse@tcp.co.uk>: Sep 20 10:06AM +0100 Last week I came across some NOS fine bore silicone sleeving. It was dated 1978. Firstly I did not realise it went back that far, in fact at least 20 years before that. No sign of greasiness, britalness , cracking, breaking with stretching only at the normal amout of stretch or lack of restitution after stretching. It could have been made this year. I was always a bit concerned about using silicone rubber for replacement flat rubber drive bands in cassette tape units etc. Still leaves the possibility of silicone rubber used in a dynamic way, flexing round motor pulleys , but so far so good, after about 10 years of such use |
| You received this digest because you're subscribed to updates for this group. You can change your settings on the group membership page. To unsubscribe from this group and stop receiving emails from it send an email to sci.electronics.repair+unsubscribe@googlegroups.com. |
No Response to "Digest for sci.electronics.repair@googlegroups.com - 11 updates in 3 topics"
Post a Comment