Author Topic: ignition problem  (Read 137 times)

Pete49

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  • W116 Enthusiast
  • Location: Quorn Sth Australia
ignition problem
« on: 11 March 2019, 08:25 PM »
Hi guys, just a question on ignitions. My problem is when I start the car the key won't return to the normal position but keeps engaging the starter and now need to turn it back manually. Any one know the answer? I'm thinking its the electrical plug behind the ignition switch but would like a bit of info.
Pete
What this country needs are more unemployed politicians.
Edward Langley,  Artist (1928-1995)

Benzboy

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  • W116 Enthusiast
  • Location: South tx
Re: ignition problem
« Reply #1 on: 11 March 2019, 10:59 PM »
Definitely the ignition switch. I just changed mine and it fixed it

Randys01

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Re: ignition problem
« Reply #2 on: 12 March 2019, 03:44 AM »
De-grunging it is worth a try.


-Disconnect the battery.
-you can try flushing it with WD40.
-use a rag underneath to catch the drizzle.
 : note the colour
 :if looks grey and murky you are flushing out graphite
-insert the key and rotate progressively to the various positions right up to ignition/ start...withdraw..clean the key blade..repeat the drill .
-make sure you relieve the load on the  steering lock  as you move thru the process.
-finish off with a blast of Aerostart or equiv into the barrel. Let it "dry" for a several hours before reconnecting the battery and attempting a start.
a start.
If the key/lock gives no improvement, then it is highly likely one of the little springs in the lock tumbler has fritzed and you need a new one.

DO NOT use graphite powder to lubricate a key lock.

Diesel 617

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Re: ignition problem
« Reply #3 on: 12 March 2019, 08:15 AM »
1980 300SD Retired
1979 280SE Euro Spec Import Crank Windows and Cloth Seats


Inventory Price
1980 450SEL/SE 722.004 Trans 150kmi ($50)
1978-1980 300SD Trans 260k mi $50
-2 450 Pairs + 300SD pair bad boots Axles $25/45
-3.07 450/300SD Differential $30