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visits member for 3 years, 5 months
seen May 12 at 13:24

Jan
29
comment Extremely high then fluctuating idle at very cold temperatures
I've seen this symptom in various vehicles, but not temperature-dependent, where it was the IAC valve. I seafoamed my IAC valve in the past 6 months mainly as preventative maintenance, and it doesn't have this issue under normal temperatures, so I doubt this is the issue.
Jan
29
comment Extremely high then fluctuating idle at very cold temperatures
Very interesting. I hadn't even thought of this possibility. If you or anyone else can find a reference to substantiate this I'll consider the matter closed and accept this answer.
Jan
13
comment Can I patch a hole in washer fluid tank?
Thanks for the comment.
Jan
5
comment Juddering under load
Cleaning the idle air control valve might solve it. A decent cleaning can be performed with seafoam (spray version) without removing it, spraying into it from the throttle body next to the throttle plate.
Dec
17
comment How far can you drive with an empty radiator?
Keep in mind my comment was qualified with "if the weather is cold enough that freezing is a concern while the engine is running". I'm not actually sure how cold it would have to get for that to be an issue, so maybe I'm wrong, but my (reasonable, IMO) guess is that it's so cold that you'd have significant heat transfer rate from the engine block to the ambient outside air, regardless of any internal air in the system.
Dec
14
comment Is idling bad for your engine?
I would expect that running the engine at idle (no load except its own internal friction and accessories on the belts) puts a lot less wear on it than running it under load. "City miles" are not just "worse" in that there's wear that's not reflected on the odometer, but also in terms of load starting from a stop, varying throttle (with moments of suboptimal gas/air mix), etc. So I don't think this answer really settles the issue of how "bad for the engine" idling might be.
Dec
7
comment Why do tires get bigger over the years?
The same reason you can't get a 1.5L or smaller engine anymore (in a non-hybrid): car manufacturers marketing is all about power, not efficiency. Yes small tires are the best, but good luck finding a modern vehicle that works with them.
Dec
5
comment Can scraping the transmission bad
I misread your last sentence and was wondering why anybody would be trying to brew in their car...
Dec
5
comment Repaint a bumper vs buying and installing a new one
Normally "bumpers" these days are just "bumper covers" which have no structural purpose; they're purely cosmetic. The structural component is underneath.
Dec
2
comment What tools are needed for removing rusted bolts?
Might a Bolt-Out set be a useful addition in step 3 if the bolt is at all rounded off from rusting?
Nov
27
comment How can I repair cracks in leather seat?
Electrician's tape?
Nov
24
comment Getting the best results sealing head gasket leak with Blue Devil
@michael: Yes, I did. And for what it's worth, 6 months later the head gasket is leaking (fairly badly) again. Not sure it I'll try to temp seal it again before actually doing the work to replace it...
Nov
22
comment At what level does low oil prevent vtec from working?
Does vtec use an electrically actuated valve? I thought it was entirely based on oil pressure.
Nov
22
comment Why does my car sometimes blow cold air while the heater is on?
I suspect newer vehicles with thermostat-based climate control systems may shut off the heat when the AC is on, except of course in defrost mode. So this answer seems at least plausible.
Nov
9
comment F-150, heater will blow hot, then cold
...and repeat the process 20+ times. :-)
Oct
29
comment Automatic Transmission or Differential Backlash (Play)
In neutral there should be unlimited motion.
Oct
28
comment Automatic Transmission or Differential Backlash (Play)
Am I correct assuming you're talking about the situation where the transmission is in park?
Oct
22
comment Hyper-miling and stress on engine oil
Replacing oil is dirt cheap; determining if you need to costs a lot more, in terms of lab work, than just replacing it.
Oct
22
comment Brake fluid reservoir level drops fast to minimum but not below
Another possibility is that you just have a lot of air in the system (failure to properly bleed it). This happened to me - brakes were "mushy" and I kept "losing" fluid with no visible leak. Eventually, after enough top-offs, it stopped happening and the brakes got firm.
Oct
22
comment Easiest way to disable the A/C compressor
I've done this mod (just removing the belt) on an 88 Civic with no ill effects.