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Topic: Changed wiper motor, now headlights don't raise correctly

in Forum: C3 General Discussion


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Changed wiper motor, now headlights don't raise correctly (1/8)
 11/5/13 10:35pm
MMJ
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Piedmont, MO - USA

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1969 roadster, 350/350, 4spd, factory side exhaust

Joined: 11/5/2013
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I just replaced my wiper motor. Now the wipers work, but when I started the car back up I have vacuum problems. The wiper door has to be manually raised for them to work and the headlights finally opened after several minutes and very slowly. Now the left one wont go down. The right one goes down, but only comes up with help. What is the first thing to check? Does the vacuum tank have to charge up for a while after the hoses have been disconnected? Everything worked fine before I changed the wiper motor. Thanks for your help.

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Mark Johnson
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Re: Changed wiper motor, now headlights don't raise correctly (2/8)
 11/5/13 11:28pm
Adams' AppleLifetime Member
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Duncanville, TX - USA

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#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas

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Definitely need to double-check your vacuum lines from the engine, around the rear of the carb....right in the same area as the wiper motor. May have knocked one loose or something like that. The vac tank will need a few seconds to replenish, but it shouldn't take more than 45 second to a minute, at the most...depending on the cam, and how well the engine idles.

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Joel Adams
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Re: Changed wiper motor, now headlights don't raise correctly (3/8)
 11/6/13 7:26am
MMJ
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Piedmont, MO - USA

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1969 roadster, 350/350, 4spd, factory side exhaust

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Thanks, Joel, I'll check more carefully in that area tonight.

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Re: Changed wiper motor, now headlights don't raise correctly (4/8)
 11/6/13 11:26am
rraider1
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Woodland, WA - USA

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Maybe at the wiper door Solenoid
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Re: Changed wiper motor, now headlights don't raise correctly (5/8)
 11/6/13 1:18pm
Adams' AppleLifetime Member
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Duncanville, TX - USA

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#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas

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 THIS digram will help trace the vac lines...

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Joel Adams
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Re: Changed wiper motor, now headlights don't raise correctly (6/8)
 11/7/13 8:40pm
MMJ
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Piedmont, MO - USA

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1969 roadster, 350/350, 4spd, factory side exhaust

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Thanks, guys, it was the line coming out of the motor under the carb. I had it smashed behind the new wiper motor. Thanks for your help!

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Mark Johnson
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Re: Changed wiper motor, now headlights don't raise correctly (7/8)
 11/7/13 11:20pm
Adams' AppleLifetime Member
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Duncanville, TX - USA

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#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas

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Embarrassed Doh!!! I hate it when that happens! LOL

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Joel Adams
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Re: Changed wiper motor, now headlights don't raise correctly (8/8)
 11/8/13 1:38am
wetvet
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Lake Oswego, OR - USA

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Adams' Apple said: Embarrassed Doh!!! I hate it when that happens! LOL


Maybe a new check valve and filter in the vacuum line may help also.


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