C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Car Wash Caused SERVICE ENGINE LIGHT -- Help!

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Old Nov 1, 2003 | 11:39 PM
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Default Car Wash Caused SERVICE ENGINE LIGHT -- Help!

I took the Vette to car wash (no brushes) today, I was in nuetral & the car died before I exited. Service engine light went on) & Voltage read 10.7. (I had the undercarage washed during the process). I started it once & it died immediately. I turned the key a 2nd time & NOTHING, no respnse at all, but dash, stereo, lights were still functioning. I waited a bit & tried again. Car started, but I had to rev up to keep it going. Service engine light still on & comes on everytime I start the car now. It doesn't seem to have a problem since I got home. I started, restarted, tried it in drive & w/A/C on, etc. checked battery, alt, plug wire connections. All ok. Could the water spray to undercariage have temporarily messed w/something? I am at a loss.
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Old Nov 1, 2003 | 11:42 PM
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Default Re: Car Wash Caused SERVICE ENGINE LIGHT -- Help! (dbwade36)

Tell us what motor you have...
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Old Nov 2, 2003 | 12:06 AM
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Default Re: Car Wash Caused SERVICE ENGINE LIGHT -- Help! (dbwade36)

It is an 86 vette. I have an L98. Were you worried that I had Opti-spark maybe?
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Old Nov 2, 2003 | 12:12 AM
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Default Re: Car Wash Caused SERVICE ENGINE LIGHT -- Help! (dbwade36)

pull the codes. that should give you an idea where to look
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Old Nov 2, 2003 | 12:57 PM
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Default Re: Car Wash Caused SERVICE ENGINE LIGHT -- Help! (dbwade36)

def should have some codes.... but if all works now,,, sounds like a bad connection somewhere that got wet....
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Old Nov 2, 2003 | 05:45 PM
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Default Re: Car Wash Caused SERVICE ENGINE LIGHT -- Help! (vinnies87)

def should have some codes.... but if all works now,,, sounds like a bad connection somewhere that got wet....
:iagree:
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Old Nov 2, 2003 | 07:22 PM
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Default Re: Car Wash Caused SERVICE ENGINE LIGHT -- Help! (JCAIRE2)

Mine does this, too. The code I would get was for the MAF. Since you have a cut lid and a K&N, I bet the water is getting in through your induction somehow - mine has a cold air induction hanging down in front of the air inlet, I figure it's getting in there...

Disconnect your battery or pull fuse to clear ECM, it should have dried up enough not to set the code again.
:seeya
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Old Nov 4, 2003 | 09:04 AM
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Default Re: Car Wash Caused SERVICE ENGINE LIGHT -- Help! (vetracer)

I have the Vortex Ram air and it did the same thing....except the light came on and went right back off.
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Old Nov 4, 2003 | 09:29 AM
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Default Re: Car Wash Caused SERVICE ENGINE LIGHT -- Help! (dbwade36)

I got to ask: Why did you put your beautiful Vette in a car wash? :nonod: :skep:

Pull the code and follow your Helms Service Manual. :yesnod:
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Old Nov 4, 2003 | 07:03 PM
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Default Re: Car Wash Caused SERVICE ENGINE LIGHT -- Help! (Strick)

UPDATE- Vette starting, running fine now & No Service Engine Light on. Is it possible that some water got into the starter during the undercarriage wash? Or maybe the 02 sensor wire connector, which was not, (but is now) wrapped in electrical tape & surrounded by a plastic wire protector? About running the Vette through a Car Wash- It was one of those "touchless washes" & I didn't let them Pre-brush the vette, so it was only soap/water that actually touched the paint. :) Although, I admit, I was lazy & should have washed it myself. I did get home & wax it on my own though. If that makes up for the mistake. hehe

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Old Nov 5, 2003 | 08:45 AM
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Default Re: Car Wash Caused SERVICE ENGINE LIGHT -- Help! (dbwade36)

Why don't you check the codes as has been suggested?
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