Revs dipping too low coming to a stop
#1
Revs dipping too low coming to a stop
Went on a run this weekend so this is when everything is fully up to temperature.
Driving between stop signs, i heard the oil pressure needle flick down and back up again as i came to a stop.
I noticed this was because the revs die and then recover.
So usual deal, slowing down to a stop, clutch in, revs hanging around 1600 until nearly stopped, then they drop down to idle levels, except they're being allowed to drop too low, then recovering. For what it's worth, the tach is suggesting maybe 500, but it's not accurate enough for this
Any ideas?
Driving between stop signs, i heard the oil pressure needle flick down and back up again as i came to a stop.
I noticed this was because the revs die and then recover.
So usual deal, slowing down to a stop, clutch in, revs hanging around 1600 until nearly stopped, then they drop down to idle levels, except they're being allowed to drop too low, then recovering. For what it's worth, the tach is suggesting maybe 500, but it's not accurate enough for this
Any ideas?
#3
#6
Hmm, probably should have come back and updated this :(
I did check the IAC and clean it, along with the MAF clean again, i'm not sure if it changed or not, i have also inadvertently disconnected the battery for a short while as i saw the clamps had both started to walk upwards.
I have barely driven it lately, but the last couple of times since then, it doesn't appear to have had the problem.
However, i have not been able to get the truck fully warmed up in order to test this as it didn't do it until it had truly warmed through.
The hose you're referring to, are you referring to the actual vacuum hose attached to the PCV valve itself?
I did check the IAC and clean it, along with the MAF clean again, i'm not sure if it changed or not, i have also inadvertently disconnected the battery for a short while as i saw the clamps had both started to walk upwards.
I have barely driven it lately, but the last couple of times since then, it doesn't appear to have had the problem.
However, i have not been able to get the truck fully warmed up in order to test this as it didn't do it until it had truly warmed through.
The hose you're referring to, are you referring to the actual vacuum hose attached to the PCV valve itself?
#7
Hmm, probably should have come back and updated this :(
I did check the IAC and clean it, along with the MAF clean again, i'm not sure if it changed or not, i have also inadvertently disconnected the battery for a short while as i saw the clamps had both started to walk upwards.
I have barely driven it lately, but the last couple of times since then, it doesn't appear to have had the problem.
However, i have not been able to get the truck fully warmed up in order to test this as it didn't do it until it had truly warmed through.
The hose you're referring to, are you referring to the actual vacuum hose attached to the PCV valve itself?
I did check the IAC and clean it, along with the MAF clean again, i'm not sure if it changed or not, i have also inadvertently disconnected the battery for a short while as i saw the clamps had both started to walk upwards.
I have barely driven it lately, but the last couple of times since then, it doesn't appear to have had the problem.
However, i have not been able to get the truck fully warmed up in order to test this as it didn't do it until it had truly warmed through.
The hose you're referring to, are you referring to the actual vacuum hose attached to the PCV valve itself?
#9
here is a shot of the one I have it's the ribbed one, my original hose in that location was very soft and had cracked and was causing a vacuum leak, check it out to make sure the one you have is in good shape just in case. Hope the photo helps!
#10
Oh, yes, yes it does help a lot, and i see you have the same plastic intake runners.
What's the deal with the PCV valve on these? worth replacing?
Actually, i just found a pic of my engine bay, it appears i have a ribbed pipe there after all, i'm assuming they're not as prone to cracking/leaking?
What's the deal with the PCV valve on these? worth replacing?
Actually, i just found a pic of my engine bay, it appears i have a ribbed pipe there after all, i'm assuming they're not as prone to cracking/leaking?
#11
Replace the PCV valve, it's inexpensive.
They get gummed up with engine blow-by and work intermittently.
If the various lines and connections are available, replace them too.
If the valve itself is failing to close due to it being dirty, it could cause a drop in idle until the valve recovers with engine vacuum pulling on it.
They get gummed up with engine blow-by and work intermittently.
If the various lines and connections are available, replace them too.
If the valve itself is failing to close due to it being dirty, it could cause a drop in idle until the valve recovers with engine vacuum pulling on it.
#14
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