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Cel light for either low oil/ vtech solenoid

 
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Old 09-06-2011, 11:49 PM
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Cel light for either low oil/ vtech solenoid

Hey guys have a couple questions. I bought a 97 prelude with 180k miles for $1500. It has paint fading severely on top and some mechanical/electrical issues. Just some background info and it is stock with an auto tranny.

1. I am throwing a cel for either low oil ( just changed and checked it today 5 Qt.) or vtech solenoid. Can I clean the solenoid or does it need to be replaced? The car is very responsive and vtech seems to be fine. But I need this cel off.

2. I have a bad knock sensor, how badly does this affect driving? I know it pulls or advances timing when knock os detected but I'm curious. I ordered a new knock sensor today on amazon and it'll be here by Monday.

This guy did not take care of the car, it has a bad valve cover gasket I plan to replace tomorrow so could oil build up from that leaking onto the solenoid have ruined it? Or just need to clean it?

Poor car needs TLC
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Old 09-07-2011, 12:02 AM
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Re: Cel light for either low oil/ vtech solenoid

Your cam seal may be leaking as well, that's right behind the vtec solenoid. You'll find out once you replace the vc gasket.

Assuming you checked the CEL to determine its a sensor? what were the CEL's?

If you're engaging vtec I would assume your vtec solenoid is fine, you can remove the solenoid and pull out the gasket that has a metal screen inside - you can just clean it with some carb cleaner or something and reinstall it.

Your oil pressure switch would be next on the list to check.

If you know you have a bad knock sensor - then you made the right call on getting that fixed asap. It may feel a little sloppy driving... so go easy on it.


there's something i'm forgetting.... but i just can't remember what at the moment... hopefully someone else chimes in
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Old 09-07-2011, 12:12 AM
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Re: Cel light for either low oil/ vtech solenoid

Where is the oil pressure switch? I'll clean all of it haha, and yes Autozone did a cel for me. I'll look at the cam seal gasket tomorrow I'm assuming I should just buy that too, wouldn't hurt to replace it honestly.

So, replace knock sensor, replace valve cover gasket, cam seal gasket, clean vtec solenoid, clean/check oil pressure switch and ?? Lol

Thanks for the help
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Old 09-07-2011, 01:51 PM
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Re: Cel light for either low oil/ vtech solenoid

There's the vtec oil pressure switch on the solenoid - there's a way to test it but i don't remember how (yeah alot of help huh lol)

Then the oil pressure switch/sensor is on the back of the block - again idr how to test that one :/ - that's the one I was forgetting before *facepalm*

I'm sure you already know the knock sensor is directly below the intake manifold and usually requires removing the intake manifold to access. Be careful since they are known to break easily... dont want to replace a $100+ sensor twice lol

There's a writeup on replacing the passenger side cam seal - you need to take off the camshaft retainer in a specific order as shown in the HELMS manual.

Downloading the HELMS manual would help alot in locating these sensors - you'll have to do a little searching on the forums on testing everything. Alot of it has been covered before (just not all at once)
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Old 09-07-2011, 02:55 PM
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Re: Cel light for either low oil/ vtech solenoid

Thanks, ya the guy gave me a manual so I have that. I clean the vtec solenoid and that wire mesh area was so dirty you couldnt see it. It's all shiny clean now, and I looked along those areas and it was the valve cover gasket leaking. So I'm good there

Just need that knock sensor. Do you think I can get it under the car?
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Old 09-07-2011, 04:57 PM
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Re: Cel light for either low oil/ vtech solenoid

you have to reset the ecu to clear the code. do that. if it stills shows up, then keep looking for a problem
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Old 09-07-2011, 06:23 PM
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Re: Cel light for either low oil/ vtech solenoid

You can try, I've personally never had to remove mine so I don't know how hard it is.
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Old 09-07-2011, 08:59 PM
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Re: Cel light for either low oil/ vtech solenoid

Alright I think I can get it from the bottom.

So today I changed the spark plugs and noticed oil on spark plug 3. It had oil all over it, so I'm curious could anything other than piston ring failure contribute to this?
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Old 09-07-2011, 09:17 PM
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Re: Cel light for either low oil/ vtech solenoid

spark plug seal. when you remove the valve cover - there are round rubber gaskets around where the plugs go - they probably need to be replaced. Oil will spill into the plug when these are bad.


That sounds like it may be whats causing alot of your knock issues. Bad spark from all that oil.

it's number 4 in this link.
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Old 09-07-2011, 09:20 PM
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Re: Cel light for either low oil/ vtech solenoid

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Originally Posted by wing8806 View Post
spark plug seal. when you remove the valve cover - there are round rubber gaskets around where the plugs go - they probably need to be replaced. Oil will spill into the plug when these are bad.


That sounds like it may be whats causing alot of your knock issues. Bad spark from all that oil.

it's number 4 in this link.
Part Detail
beat me too it
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Old 09-07-2011, 09:27 PM
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Re: Cel light for either low oil/ vtech solenoid

So that could also be causing the burning oil smell I get sometimes?

Ok I got those too with the valve cover gasket kit I got. Sweet I hope that's what it is.
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Old 09-07-2011, 11:22 PM
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Re: Cel light for either low oil/ vtech solenoid

Yeah, it's causing oil to leak into your pistons - in return burning the oil lol.

So that's more than likely the burning oil smell as well.

But you wont know 100% until you finish :)
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Old 09-08-2011, 02:15 AM
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Re: Cel light for either low oil/ vtech solenoid

What are you going to do about the fading paint?
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Old 09-08-2011, 03:20 PM
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Re: Cel light for either low oil/ vtech solenoid

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What are you going to do about the fading paint?
o_O i must have missed what you're referring to
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Old 09-08-2011, 07:26 PM
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Re: Cel light for either low oil/ vtech solenoid

It's getting a paint change to pearl white or si blue. Not sure which one but the motor needs to be good first
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Old 09-09-2011, 12:10 PM
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Re: Cel light for either low oil/ vtech solenoid

Quote:
Originally Posted by awdmaniac View Post
Hey guys have a couple questions. I bought a 97 prelude with 180k miles for $1500. It has paint fading severely on top and some mechanical/electrical issues. Just some background info and it is stock with an auto tranny.

1. I am throwing a cel for either low oil ( just changed and checked it today 5 Qt.) or vtech solenoid. Can I clean the solenoid or does it need to be replaced? The car is very responsive and vtech seems to be fine. But I need this cel off.

2. I have a bad knock sensor, how badly does this affect driving? I know it pulls or advances timing when knock os detected but I'm curious. I ordered a new knock sensor today on amazon and it'll be here by Monday.

This guy did not take care of the car, it has a bad valve cover gasket I plan to replace tomorrow so could oil build up from that leaking onto the solenoid have ruined it? Or just need to clean it?

Poor car needs TLC

It's Vtec bro look at your valve cover.
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Old 09-09-2011, 08:46 PM
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Re: Cel light for either low oil/ vtech solenoid

Haha I realized that a little late, my bad.

Can anyone tell me if there is a dIfference from a jdm h22 blue top intake manifold and a American black top h22 intake manifold.
I think it's an h22, it also came with the fuel rail, injectors, fpr, and that's all. Can I swap this to my h22a4? Are the injectors different? Any gains?

Thanks

Last edited by awdmaniac; 09-09-2011 at 08:58 PM.
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