HELP...my car will not idle (first issue with car)
#31
Three Wheelin'
Thread Starter
Tim, I got to tell you though I am not 100% sure the problem will not re-appear just out of the blue like it did this time. But like you, I am glad it was nothing major.
#34
Race Car
Steven, I dont think it is your problem but you did mess with the oil cap and the reason I am writing. You need to open the oil cap while the engine is running and make sure it DOES NOT affect the idle. If it sounds like it wants to die out or it does die out once you pull the cap, the oil separator has KO'd or possibly the bellow that returns the oil to the block.
#35
Three Wheelin'
Thread Starter
Steven, I dont think it is your problem but you did mess with the oil cap and the reason I am writing. You need to open the oil cap while the engine is running and make sure it DOES NOT affect the idle. If it sounds like it wants to die out or it does die out once you pull the cap, the oil separator has KO'd or possibly the bellow that returns the oil to the block.
So how I understand this, whether I had a problem or not:
If I start the car, let it idle, remove the oil cap, the car should NOT die...correct?
If the car dies then I do have a problem...correct?
#36
Three Wheelin'
Thread Starter
OK, so I started the car just now, a bit cold outside in the upper 40's in the garage. But it started fine and idled fine, however:
I removed the oil cap and the idle started to go rough. I didn't leave it off long enough for it to stall, but it was an obvious change in the idle. So is this normal?
Thoughts???
But I took it for a small drive, actually saw another 996 and waved and got a wave back , no problem detected during the drive. When I came to every stop sign or stop light the car idled OK, not rough, maybe a little low for my liking (600~700), but no stalling.
I removed the oil cap and the idle started to go rough. I didn't leave it off long enough for it to stall, but it was an obvious change in the idle. So is this normal?
Thoughts???
But I took it for a small drive, actually saw another 996 and waved and got a wave back , no problem detected during the drive. When I came to every stop sign or stop light the car idled OK, not rough, maybe a little low for my liking (600~700), but no stalling.
Last edited by TheSpeedDemon; 12-15-2007 at 07:16 PM.
#38
SD
I just went out and ran the car then took off the oil cap... dropped in idle and ran a little rougher! but did not die..See if yours will die
If I understand what Tippy is saying, If it dies, then the oil separator is bad or ???? is bad, the second part of the "or" I am not sure what he is referring to
Jerry
I just went out and ran the car then took off the oil cap... dropped in idle and ran a little rougher! but did not die..See if yours will die
If I understand what Tippy is saying, If it dies, then the oil separator is bad or ???? is bad, the second part of the "or" I am not sure what he is referring to
Jerry
#39
Race Car
If it is rough and dies out along with a strong vacuum on the oil cap, the separator has failed.
When mine failed, the cap was very hard to pull off and the engine died almost immediately, within a couple seconds. Once I put the new one in, there was a very slight vacuum when pulling the oil cap and the engine idle did not change much at all.
This diagnosis was given to me from 99firehawk.
#40
Race Car
There is a rubber hose that is called the bellow (accordian shaped) that is part of the oil separator. It returns the oil dropped out of suspension back into the crankcase, sometimes these crack. I am not 100% on whether this would have the same effect on the idle though but I have heard someone here replacing like 3-4 on their car before, the thing is a PITA to get on the nipple of the crankcase.
#41
Burning Brakes
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How does turning the air-conditioner on affect your idle? When I have my A/C on, the car idles smoother. It doesn't die or anything when it's off, it just runs a little bit rougher but no big deal - it's always done that as far as I remember.
#42
Three Wheelin'
Thread Starter
If it idles relatively the same, your ok. There should only be a slight vacuum in from the oil cap.
If it is rough and dies out along with a strong vacuum on the oil cap, the separator has failed.
When mine failed, the cap was very hard to pull off and the engine died almost immediately, within a couple seconds. Once I put the new one in, there was a very slight vacuum when pulling the oil cap and the engine idle did not change much at all.
This diagnosis was given to me from 99firehawk.
If it is rough and dies out along with a strong vacuum on the oil cap, the separator has failed.
When mine failed, the cap was very hard to pull off and the engine died almost immediately, within a couple seconds. Once I put the new one in, there was a very slight vacuum when pulling the oil cap and the engine idle did not change much at all.
This diagnosis was given to me from 99firehawk.
So I started the car again, removed the cap and it didn't die although it seemed like there was good vacuum present, but not enough to stop me from removing the cap easily. So I am thinking it is OK, the idle changed very slightly.
Where abouts is the separator BTW?
I have no history on whether or not my car has had the separator or bellows replaced.
#43
Three Wheelin'
Thread Starter
Yep I have the same results. A/C ON a little higher idle and smoother. A/C OFF a little rough idle but like you, no big deal unless it drops below 600 rpm's which it doesn't. It use to surge but then I cleaned the ICV and that cleared it up. I was even thinking to raise the idle a little but not sure exaclty what to adjust or if that is a good idea or not. This new issue seems to have been solved but we are determining whether or not I need to replace anything (i.e. separator or bellows).
#44
Race Car
Thanks much appreciated for the information.
So I started the car again, removed the cap and it didn't die although it seemed like there was good vacuum present, but not enough to stop me from removing the cap easily. So I am thinking it is OK, the idle changed very slightly.
Where abouts is the separator BTW?
I have no history on whether or not my car has had the separator or bellows replaced.
So I started the car again, removed the cap and it didn't die although it seemed like there was good vacuum present, but not enough to stop me from removing the cap easily. So I am thinking it is OK, the idle changed very slightly.
Where abouts is the separator BTW?
I have no history on whether or not my car has had the separator or bellows replaced.