AirSpeed VW Community Forums

Technical => Engine Tech Forum => Topic started by: ray on August 18, 2008, 05:52:56 PM

Title: Yellow light ?
Post by: ray on August 18, 2008, 05:52:56 PM

Okay kinda of a dumb question............. I have a 57 bug , the yellow light seems to come on . Mostly when I'am at idle . If I rev it up it goes out . First it would flicker a tiny bit . Now it seems to be a bit stronger . Did it with or without my lights on . I've got a bosh alternator on the car . Is it a charging problem ? Battery is new . Fan belt seems tight . Car runs great and strong . Any info ? Thanks . Ray

Title: Re: Yellow light ?
Post by: silas on August 18, 2008, 08:15:22 PM

you should have 2 warning lights on your speedo...1 green (oil pressure) & 1 red (charging). if you turn the key on with the engine off (something i do before every start, just as a saftey measure to confirm the lights are working), they should both light up.

i'm going to guess the yellow light you see is a faded green (oil pressure) light.

what type of oil are you using? when was the last time you changed it? at what rpm does the motor idle at? do you have any sort of oil pressure gauge (in the car or out) to measure oil pressure?

Title: Re: Yellow light ?
Post by: piercedvw on August 18, 2008, 11:00:50 PM

My oil light looks yellow too.. faded green.

Title: Re: Yellow light ?
Post by: BUSDADDY on August 19, 2008, 06:55:34 AM

Temporarily remove the wire from the oil pressure sender (just below distributor) and see which light stops working.

Title: Re: Yellow light ?
Post by: egspot on August 19, 2008, 08:41:17 AM

Quote from: BUSDADDY on August 19, 2008, 06:55:34 AM

Temporarily remove the wire from the oil pressure sender (just below distributor) and see which light stops working.

Check the oil pressure sensor and see if it is leaking or loose.

Title: Re: Yellow light ?
Post by: piercedvw on August 19, 2008, 10:51:01 AM

lol.. I had that issues last month.. Oil light would come on.. go off.. flicker.. bright.. dim. THOUGH.. in the time I've owned my truck, I had never seen the light come on. Sooooo.. long story short.. I had no sensor, and the wire which was simply hooked to the light/ guage, was in limbo.. it had come loose and was grounding out. Taped it up, and light is out. Problem solved.
 Not saying you don't have a sensor.. but make sure it's there and hooked up first ;)

Title: Re: Yellow light ?
Post by: silas on August 19, 2008, 08:53:07 PM

yup....like the others have stated...it could be a faulty or leaking sensor or a problem with the wiring to it.

Title: Re: Yellow light ?
Post by: Cameron on August 20, 2008, 08:30:09 AM

Hey Ray!

I'm curious. What was the outcome of this?

Title: Got it fixed thanks
Post by: ray on August 21, 2008, 11:17:06 PM

Thanks Silas thanks for the info . Yeah guess that yellow light was really a green light at one time . Anyway the wire from the oil sender on the block was loose / a bit worn too. A quick fix , it's all good . Thanks for the help . RAY