SLP lid
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Teching In
Joined: Apr 2019
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From: Ohio
SLP lid Hey guys I have a question about my SLP lid that has really been pissing me off. when I got the car I had already had an SLP lid installed and if I drive the car in heavy rain or take it in an automatic car wash the check engine light flashes at me and the car runs like **** due to misfire for a few miles after I’ve already tried new foam weatherstripping for the lid and a new air filter and I’ve sealed it up as good as I know how any other ideas?
Hey guys I have a question about my SLP lid that has really been pissing me off. when I got the car I had already had an SLP lid installed and if I drive the car in heavy rain or take it in an automatic car wash the check engine light flashes at me and the car runs like **** due to misfire for a few miles after I’ve already tried new foam weatherstripping for the lid and a new air filter and I’ve sealed it up as good as I know how any other ideas?
Joined: Nov 2001
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From: Schiller Park, ILL Member: #317
I don't really see how the lid could be the issue here. Do you have a ram air kit installed, or if you have a WS6 (as your username suggests) have you removed the baffles in the hood (making it a true "Ram Air")? Those things might cause significant amounts of water to reach the air filter if it's sprayed at high pressure directly at the ducting. But there is nothing about the air lid itself which would lead to excessive water intrusion during a car wash.
It's also possible that water is leaking past the cowl and onto the intake manifold, seeping past the intake gaskets or even a bad fuel injector O-ring. The intake gasket issue has been covered in a few threads over the years; some folks have experienced hydrolock conditions due to this (but such typically happens only when the car has been sitting in the heavy rain and water keeps seeping into the cylinder withOUT the engine running to burn it off).
As mentioned above this could also be a wiring issue, ranging from an actual damaged wire to a marginal weatherpack connector or some other odd water intrusion issue that disrupts a signal or the ignition system in some way.
Based on what is known so far, I would assume that just about anything else is more likely that the lid itself being the problem.
It's also possible that water is leaking past the cowl and onto the intake manifold, seeping past the intake gaskets or even a bad fuel injector O-ring. The intake gasket issue has been covered in a few threads over the years; some folks have experienced hydrolock conditions due to this (but such typically happens only when the car has been sitting in the heavy rain and water keeps seeping into the cylinder withOUT the engine running to burn it off).
As mentioned above this could also be a wiring issue, ranging from an actual damaged wire to a marginal weatherpack connector or some other odd water intrusion issue that disrupts a signal or the ignition system in some way.
Based on what is known so far, I would assume that just about anything else is more likely that the lid itself being the problem.
Thread Starter
Teching In
Joined: Apr 2019
Posts: 25
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From: Ohio
I guess the o ring or electrical problem never really crossed my mind so I’ll definitely do some checking around but I don’t know of any electrical problems it could be thanks for the reply’s tho guys and yes it is a 2002 T/A with the ram air package
Joined: Nov 2003
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From: Wichita KS / Rancho San Diego
All the suggestions above make for far more likely causes than your intake tract and lid. But when the problem occurs, have you checked the airbox under the lid for water puddling and whether the air filter is wet? Due to my CAI in heavy rains, I've had a little water in my airbox a few times and once the air filter a little bit wet, but never any problem because of that.
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Teching In
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From: Ohio
The air filter does get a little wet but I didn’t think it’d be enough to make the car run bad I’ve opened the hood and let the car run as I sprayed the whole engine bay down with water in a spray bottle and don’t have any issues so that’s why I was kinda assuming a lid problem
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Joined: Aug 2006
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From: Knappa, Oregon
When this happens, have you pulled over into a sheltered place and took the air lid off and looked for signs inside of water? The air comes up through the filter, then into the lid, and then passes the MAF sensor. The MAF would be the first place that water could be causing drivability issues if water was getting either past the filter or from a leaky lid. The water should be obvious by just popping the lid open and taking a look. If the inside of the lid seems dry and the tunnel to the MAF is dry, then the lid is probably not the problem.
Take it to the car wash, try to create the issue, and then look inside the lid/tunnel, MAF area.
Take it to the car wash, try to create the issue, and then look inside the lid/tunnel, MAF area.
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Teching In
Joined: Apr 2019
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From: Ohio
The ram air hoods on both my 98 WS6 and my current 02 WS6 are debaffaled and both had SLP lids the only difference that I know of between the cars is that my 02 has the smooth bellow from the back of the lid to the throttle body my 98 did not I can see the factory ribbed bellow holding water from going in the throttle body does anyone think this sound like a idea to look into?
Joined: Nov 2001
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From: Schiller Park, ILL Member: #317
The ram air hoods on both my 98 WS6 and my current 02 WS6 are debaffaled and both had SLP lids the only difference that I know of between the cars is that my 02 has the smooth bellow from the back of the lid to the throttle body my 98 did not I can see the factory ribbed bellow holding water from going in the throttle body does anyone think this sound like a idea to look into?
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From: Ohio
the whole air box and lid looks fine to me no cuts or anything out of place the lid itself looks a little old and weathered but nothing that would cause this problem so I’m tempted to try a different intake and see if it clears the issue up I’m sure it’s something with the lid that I’m not seeing because I’ve wetted everything down under the hood and the car gave me no problems only when I’m on the freeway at about 65 - 70 in rain or water gets sprayed directly into the grills on the hood is the only time I can get the car to act up
Joined: Nov 2003
Posts: 6,216
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From: Wichita KS / Rancho San Diego
the whole air box and lid looks fine to me no cuts or anything out of place the lid itself looks a little old and weathered but nothing that would cause this problem so I’m tempted to try a different intake and see if it clears the issue up I’m sure it’s something with the lid that I’m not seeing because I’ve wetted everything down under the hood and the car gave me no problems only when I’m on the freeway at about 65 - 70 in rain or water gets sprayed directly into the grills on the hood is the only time I can get the car to act up
Both of these are really absurd suggestions. Which is to say, I can't see your problem being caused by the lid.