Oil light flashing on and off wtf?
05-21-2008, 07:41 PM
#1
3.0 BAR
Thread Starter
Join Date: Dec 2005
Posts: 2,081
Oil light flashing on and off wtf?
Like the title says, I have a 95 prelude with an h23 in it. only sometimes does it do it but when it does its after the engine has warmed up and at idle it starts flashing. With a oil pressure guage hooked up to it, it shows almolst 45psi of oil pressure at idle when its cool so what gives
edit: I know the flashing oil light means "temporary loss of oil pressure" but why, theres a new sending unit in it still does it.
I've heard of some contacts on the back of the cluster might be bad or some crap?
edit: I know the flashing oil light means "temporary loss of oil pressure" but why, theres a new sending unit in it still does it.
I've heard of some contacts on the back of the cluster might be bad or some crap?
05-21-2008, 07:49 PM
#2
1.5 BAR
Join Date: Feb 2008
Posts: 924
Re: Oil light flashing on and off wtf?
Originally Posted by ifly87
With a oil pressure guage hooked up to it, it shows almolst 45psi of oil pressure at idle when its cool so what gives
05-21-2008, 08:22 PM
#5
1.5 BAR
Join Date: Feb 2008
Posts: 924
Re: Oil light flashing on and off wtf?
Originally Posted by ifly87
I dont know, but it its fine cold the pump has gotta be fine right? this thing only has 130,000 on it but it was sitting for a while maybe a year or more without being run.
05-21-2008, 10:39 PM
#6
1.5 BAR
Join Date: Aug 2003
Posts: 1,164
Re: Oil light flashing on and off wtf?
I dont think a loose connection would do it. Switch is normally closed so any breaks in the wiring couldn't turn the light on. I forgot to connect mine once and the light just never came on even when the engine wasn't running.
05-22-2008, 03:06 AM
#8
0.5 BAR
Join Date: Sep 2005
Posts: 67
Re: Oil light flashing on and off wtf?
normally open
if you've got a fucked up idle, (low/rough idle) the rpm's might be falling low enough that the pump doesn't generate quite enough pressure.
you need a gauge on there so you can check it through it's paces, otherwise it's just a bunch of useless guessing.
if you've got a fucked up idle, (low/rough idle) the rpm's might be falling low enough that the pump doesn't generate quite enough pressure.
you need a gauge on there so you can check it through it's paces, otherwise it's just a bunch of useless guessing.
05-22-2008, 07:59 AM
#9
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Join Date: Sep 2007
Posts: 1,305
Re: Oil light flashing on and off wtf?
same thing happens in my corolla, i got a new switch but its too much of a bitch to replace it so i said ---- it. i wanted to hook up a gauge but toyota made the treads in the oil pressure switch hole to be 3/8'' british nominal pipe threat, i spent forever looking for it and i finally called the stealership and they said they just put in a new oil pressure switch and monitor it from there. 
05-22-2008, 01:10 PM
#10
1.0 BAR
Join Date: Jul 2007
Posts: 378
Re: Oil light flashing on and off wtf?
Originally Posted by t_cel_t
same thing happens in my corolla, i got a new switch but its too much of a bitch to replace it so i said ---- it. i wanted to hook up a gauge but toyota made the treads in the oil pressure switch hole to be 3/8'' british nominal pipe threat, i spent forever looking for it and i finally called the stealership and they said they just put in a new oil pressure switch and monitor it from there.
don't ignore it though.
