Technical Ignition Switch Diagnosis

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Technical Ignition Switch Diagnosis

ThePieman13

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Oct 17, 2014
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Hi - my wifes car has had a long standing issue. Essentially, the car will crank but often won't spark. It will take up to 3 attempts and then it will crank perfectly and the car will drive perfectly. However, the number of cranks seems to be increasing.

We have had probably 12 mechanics try to figure this out over the years and not one has fixed it.

We have had:

-Virtually every sensor replaced
-Fuel pump replaced (main dealer rip off)
-Starter motors changed
-Sparks and leads changed
-Software updates
-battery changed (and new one load tested so all fine)
-other things I've blatantly forgotten

You name it, we've done it - however the latest diagnosis is the ignition switch (I presume the same as the starter switch?) is probably on its way out. Does this sound right? If so, we have sourced one, and was wondering if we could put the current barrel in a new switch? Will this work?

One thing to mention is, this problem did seem to go away-ish for a bit when she stopped using supermarket fuel (due to where she worked) - but back using it now due to relocation.

Any advice welcome.

Ta

Paul
 
Hi - my wifes car has had a long standing issue. Essentially, the car will crank but often won't spark. It will take up to 3 attempts and then it will crank perfectly and the car will drive perfectly. However, the number of cranks seems to be increasing.

We have had probably 12 mechanics try to figure this out over the years and not one has fixed it.

We have had:

-Virtually every sensor replaced
-Fuel pump replaced (main dealer rip off)
-Starter motors changed
-Sparks and leads changed
-Software updates
-battery changed (and new one load tested so all fine)
-other things I've blatantly forgotten

You name it, we've done it - however the latest diagnosis is the ignition switch (I presume the same as the starter switch?) is probably on its way out. Does this sound right? If so, we have sourced one, and was wondering if we could put the current barrel in a new switch? Will this work?

One thing to mention is, this problem did seem to go away-ish for a bit when she stopped using supermarket fuel (due to where she worked) - but back using it now due to relocation.

Any advice welcome.

Ta

Paul

If its cranking. And recognising the key chip..then its NOT the ign barrel.

The fuelling does sound like the isdue.. where is the car based..?
Charlie . Oxford
 
The ignition switch could be an issue. While cranking, it still needs to make contact for the ignition feed, and if worn may not do so. This can be a particular problem if the barrel is well worn due to too many heavy keys dangling.

It is possible to separate the switch from the lock barrel, so just the switch can be replaced and keep the original keys. My replacement column came with a new switch and I swapped my lock over.

A lot of people put all their keys on one bunch. The weight of these can cause a lot of wear to the lock barrel, leading to movement and dodgy contacts. Was a problem at times even when the switch was in the dash, before we had column locks. Ahh! memories. On the Rover 800 it didn't take long to wear the barrel, causing the starter motor to remain engaged with the engine until it failed.

So check for a sloppy lock.
 
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