4.0 won't start
Discussion
Julesprivate said:
ChimpofDarkness said:
I bet this guy is still suffering the original faults TVR hard wired in at the factory.
I'm not so sure. I'm pretty confident it is a simple starter/solenoid issue and the alarm is a bit of a red herring in my case. That may prove to be wishful thinking but I'm willing to take that chance for now.Having an alarm/immobiliser fitted certainly clouds the issue and complicates the diagnosis but often the simplest explanation for a problem is the correct one.
Fingers crossed.
If you can hear the starter solenoid click but the starter motor fails to spin it's likely to be one of these things.
1. The solenoid command wire isn't delivering enough amps to fully throw the solenoid
2. The weedy & excessively long battery to starter motor lead is dead
3. You have an earthing problem
4. The solenoid itself is on it's way out
5. The starter motor is sticking or has an abnormally high internal resistance
6. Your battery is dead
First try briefly putting a screwdriver across the the solenoid terminals to see if the starter spins.
Next take a long jump lead directly from the battery negative terminal to one of the starter bolts to eliminate an earthing issue, then try cranking it on the key.
Finally take a long jump lead directly from the battery positive terminal to starter motor main terminal and again see if it spins.
These simple tests quickly should tell you where the fault is.
Edited by ChimpofDarkness on Wednesday 24th October 22:57
ChimpofDarkness said:
Good luck with it Julesprivate.
If you can hear the starter solenoid click but the starter motor fails to spin it's likely to be one of these things.
1. The solenoid command wire isn't delivering enough amps to fully throw the solenoid
2. The weedy & excessively long battery to starter motor lead is dead
No longer weedy - but every bit as long.. Replaced by PO with something I could jumpstart a jet with!
3. You have an earthing problem
I checked as best I could today, they're all solidly tight and clean. Car is a genuine 20k miler "never seen rain" example and is as close to immaculate as I could wish... But I know a visual inspection is not comprehensive enough.
4. The solenoid itself is on it's way out
5. The starter motor is sticking or has an abnormally high internal resistance
6. Your battery is dead
It's unlikely considering the abuse I gave it today and it then starting the car but the only way to check would be to bench test it.
First try briefly putting a screwdriver across the the solenoid terminals to see if the starter spins.
Next take a long jump lead directly from the battery negative terminal to one of the starter bolts to eliminate an earthing issue, then try cranking it on the key.
Finally take a long jump lead directly from the battery positive terminal to starter motor main terminal and again see if it spins.
These simple tests quickly should tell you where the fault is.
Thanks for the advice, I'll give them a go tomorrow, if I can persuade the garage to let me have a play while it's on their ramp LOLIf you can hear the starter solenoid click but the starter motor fails to spin it's likely to be one of these things.
1. The solenoid command wire isn't delivering enough amps to fully throw the solenoid
2. The weedy & excessively long battery to starter motor lead is dead
No longer weedy - but every bit as long.. Replaced by PO with something I could jumpstart a jet with!
3. You have an earthing problem
I checked as best I could today, they're all solidly tight and clean. Car is a genuine 20k miler "never seen rain" example and is as close to immaculate as I could wish... But I know a visual inspection is not comprehensive enough.
4. The solenoid itself is on it's way out
5. The starter motor is sticking or has an abnormally high internal resistance
6. Your battery is dead
It's unlikely considering the abuse I gave it today and it then starting the car but the only way to check would be to bench test it.
First try briefly putting a screwdriver across the the solenoid terminals to see if the starter spins.
Next take a long jump lead directly from the battery negative terminal to one of the starter bolts to eliminate an earthing issue, then try cranking it on the key.
Finally take a long jump lead directly from the battery positive terminal to starter motor main terminal and again see if it spins.
These simple tests quickly should tell you where the fault is.
Edited by ChimpofDarkness on Wednesday 24th October 22:57
Simon says said:
Daz that lower LED is for the factory fitted alarm I just removed the factory fitted one and screwed in the Cobra supplied LED along with its new loom 
it should flash only when the vehicle is armed or when it goes into passive arming 
but should not glow, just to clarify this one caught mid flash 
Ok i could pull the other one off ! i wonder why it stays alight (DIM) when the alarm is off it should flash only when the vehicle is armed or when it goes into passive arming but should not glow, just to clarify this one caught mid flash .
Hi all,
Summary of fault finding....
Replaced:
Coil, Ignition amp, sparkplugs and still had starting problems.
Added injector cleaner to fuel and it started up. (fuel was not old).
Still slight miss-fire under load so replaced plug leads.
Now running OK.
Thanks for all the help.
Kind Regards
Brian
Summary of fault finding....
Replaced:
Coil, Ignition amp, sparkplugs and still had starting problems.
Added injector cleaner to fuel and it started up. (fuel was not old).
Still slight miss-fire under load so replaced plug leads.
Now running OK.
Thanks for all the help.
Kind Regards
Brian
Wynns products are good. Here's one that may have solved your issue right from the start:
http://youtu.be/cY1YndLmbXQ
http://youtu.be/cY1YndLmbXQ
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