HS 1.7's, temp sensor and PCV questions
Captain
Joined: May 2010
Posts: 569
Likes: 0
From: clayton, north carolina
on my truck the gauge runs at the same place as yours and every now and then i get the code engine cold too long mine is also a 2000. i data logged with a snap-on scanner and the ect was 80c which is 182 degrees farengite so i gues mine temp sending unit is right and thats just were the guage is going to be
Banned Goober Smoocher
Joined: Jun 2010
Posts: 8,916
Likes: 1
A normal indication is the belly pan on the bottom of the manifold (looking down through the throttle bores) showing about what you'd expect of finely vaporized oil settling out of the intake stream, more of a fine and mostly baked-on coating than a puddle or streaks. If you have more liquid oil puddling or streaking, you've got either a bad PCV valve or a blown plenum gasket.
If you suspect a blown plenum gasket, do the test specified in the TSB. If the test passes, look to the PCV valve as the most likely culprit. If you suspect you have a stuck PCV valve, just swap it out without hesitation. There's no sense worrying over a part that's so cheap and easy to replace. I replace mine with every tune up, and if I had those high zoot expensivum spark plugs that will go 100,000 miles I'd just replace the PCV valve every two or three years -- three seems more reasonable, but it's easier to remember something like "Memorial Day in even numbered years" unless you've got something that happens every three years to mark time by.
Oil consumption and/or oil smoke in the exhaust aren't good indicators of a stuck PCV valve because there are just too many other possible causes. Those things are a darn good reason to go looking for their causes because a cheap enough fix left undone can get very costly later, but you can't really look at oil smoke in the exhaust and magically know the source without troubleshooting your way to evidence.
If you suspect a blown plenum gasket, do the test specified in the TSB. If the test passes, look to the PCV valve as the most likely culprit. If you suspect you have a stuck PCV valve, just swap it out without hesitation. There's no sense worrying over a part that's so cheap and easy to replace. I replace mine with every tune up, and if I had those high zoot expensivum spark plugs that will go 100,000 miles I'd just replace the PCV valve every two or three years -- three seems more reasonable, but it's easier to remember something like "Memorial Day in even numbered years" unless you've got something that happens every three years to mark time by.
Oil consumption and/or oil smoke in the exhaust aren't good indicators of a stuck PCV valve because there are just too many other possible causes. Those things are a darn good reason to go looking for their causes because a cheap enough fix left undone can get very costly later, but you can't really look at oil smoke in the exhaust and magically know the source without troubleshooting your way to evidence.
I've got some light (I mean LIGHT, you can barely see it) smoke right now for about 5-10 seconds after start up. I HAVE had some heavy smoke for a short time as well; but that was at 3500RPM on the highway and sitting in the parking lot at school (lol) though.
Since there is no oil around in the pan, I'm thinking the PCV is dying.
I would presume that if the PCV and hose are soaked with oil when you take them off it is shot, right?
Also, I just found this....
LOL!