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Location: Viera FL
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Figure this one out.....
85.5 944
128K miles DME relay good All ignition components less than 6 months old Battery good Turn key, get nothing but a hum from the starter AFJuvat
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Es geht nicht darum wie schnell man faehrt, sondern wie gut man schnell fahren kann. Ihr Brunnen der nutzlosen Porsche Information |
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11-12-2004, 03:44 AM
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In decreasing order of likelihood...
1) Bad Starter/Starter Solenoid 2) Bad Positive Connection 3) Bad Ignition Switch 4) Bad Ground from Battery to Engine. gb
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11-12-2004, 04:18 AM
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Cars & Coffee Killer
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Location: State of Failure
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Can the starter and starter solenoid be replaced independently of each other on a 944?
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Some Porsches long ago...then a wankle... 5 liters of VVT fury now -Chris "There is freedom in risk, just as there is oppression in security." |
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11-12-2004, 05:00 AM
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Just thinking out loud
Join Date: Nov 2001
Location: Close by
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1. Teeth on the starter gear and/or flywheel missing.
2. Starter stuffed with electrically heated socks.
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83 944 91 FJ80 84 Ram Charger (now gone) |
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11-12-2004, 06:38 AM
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a hum from the starter usually means that the gear on the shaft in the starter isn't making contact with the flywheel. my suggestion is to take the starter off and lubricate the shaft. and also check the spring. there might be a bur on the shaft, make sure it is smooth.
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Parting out an 83 with black interior and two red racing seats |
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11-12-2004, 07:22 AM
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A hum from the starter motor - I assume this means the motor is not spinning. If so, I say dead winding in the starter motor, or a bad brush. Could also be a bad solonoid.
Check voltage across starter motor while it's engaged. should be greater than 10 or 11 volts. if it's lower, i would suspect a bad connection. Could also be battery cables wrapped with socks for insulation, or battery cables replaced with lamp cord!
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Mike '92 968 '01 VW Jetta TDi |
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11-12-2004, 09:40 AM
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well, i guess there is another sort of hmming sound that could be made. If the shaft is unable to spin in the starter, there is the possiblity that the magnetic field being over loaded will cause a hmming sort of sound.
The starter is an easily removed item, just pull it off and test it like so. if it the starter test is fine, then check battery cables. I have heard horror stories where corrosion was found inside a wire while the conncections appeared fine. Sometimes battery terminals can be bad and not pass a good current.
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Parting out an 83 with black interior and two red racing seats |
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11-12-2004, 10:08 AM
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Gonna go with a tubesock in the flywheel on this one, AF.
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1983 944 - Sable Brown Metallic / Saratoga / LSD : IceShark Light Kit |
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11-12-2004, 10:10 AM
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Uhmmm considering Mother Juvat finds this interesting..............
I would assume its not as obvious as he states... so I am saying the wrong bosch starter was installed.......... spins in opposite direction.  Teeth are ground off............. and it just spins.... or Car threw a rod....... the owner not realizing what had occurred tried to start it again.... teeth got smashed ............and starter just spins freely.
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Alex - PCA Polar Region - Boxster Muncher 86' 944 Turbo - Megasquirt - 326 rwhp/340lbft @ 18 psi SOLD www.edmontonhomelife.com www.edmontonrealestate.ws |
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11-12-2004, 10:24 AM
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Can the motor be turned over by hand?
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75 914 - Undecided. 80 931 - Gone, but not forgotten. 72 914 - old toy- sold. And a whole bunch of German scrap metal shaped like 924's. Old enough to know better, and stupid enough to do it anyway! |
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11-12-2004, 10:43 AM
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least common denominator
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Re: Figure this one out.....
Quote:
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Gary Fisher 29er 2019 Kia Stinger 2.0t gone  1995 Miata Sold 1984 944 Sold I am not lost for I know where I am, however where I am is lost. - Winnie the poo. |
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11-12-2004, 12:38 PM
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Quote:
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1983 944 - Sable Brown Metallic / Saratoga / LSD : IceShark Light Kit |
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11-12-2004, 05:57 PM
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quiet hum w/ voltage drop - someone dropped a bolt in the hole over the bellhousing and its wedged in there.
loud hum (starter turning) - you forgot to bolt it back to the bellhousing (lol)
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Brad Tompkins Current: '86 951 Sunroof Delete - '89 951 - '83 944 Spec - '08 Cayenne Turbo Past: '88 924S Track - '86 944 16v - '87 951 - '87 951 - '88 951S - '08 Cayman S - '87 944 Track - '93 968 |
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11-12-2004, 08:22 PM
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The car is related to mine.
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11-12-2004, 09:34 PM
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there is no starter! just a sock with lamp cords going to it!
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11-12-2004, 09:43 PM
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It was a bad ignition switch - burned contact at the "start" position, everything else on the switch was fine.
AFJuvat
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Es geht nicht darum wie schnell man faehrt, sondern wie gut man schnell fahren kann. Ihr Brunnen der nutzlosen Porsche Information |
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11-14-2004, 04:01 PM
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If there was no voltage going to the starter then the starter should not be making any noise.
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Hugh - So Cal 83 944 Driver Person NOT a 'real' Porsche -- Its Better!!!! When was the last time you changed your timing and balance belts and/or cam chain and tensioner? New Users please add your car's year and model to your signature line! Never break more than you fix! |
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11-14-2004, 07:32 PM
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You are correct - the humming was actually from the fuel pump. From inside the car, it just sounded like the starter motor was turning
AFJuvat
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Es geht nicht darum wie schnell man faehrt, sondern wie gut man schnell fahren kann. Ihr Brunnen der nutzlosen Porsche Information |
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11-14-2004, 07:48 PM
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1983 Porsche 944 2.5 NA
1983 Porsche 944 2.5 liter
