starting issues is it my starter?
starting issues is it my starter?
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Discussion

sjc1969

Original Poster:

392 posts

161 months

Tuesday 14th May 2013
quotequote all
Since i bought my Cerb i have increasing had starting issues (the solenoid clicks and nothing happens). Firstly when the car was hot, and now from cold too. I did get it to start when cold by putting in gear and rocking the car before trying to start again, and that seemed to work, but not now.

At thunder in the tunnels last weekend i had the same problem when it was hot, but this time even after 20 minutes it wouldn't start. Jamie with his ZX TT (big thanks to you jamie) gave me a jump start using jump leads and that worked. Again it happened when we stopped at battersea Park, and again Jamie gave me a jump start and it fired up, as it would not start alone.

I thought that perhaps the battery was dying, it has been on accumate charger when garaged, but going through the service records, receipts, it appears to be a least 3 years old, and is probably even older. I put the accumate charger on when we got home, and when the charger reported a fully charged battery i tried without success to start the car. Maybe battery has good voltage but low amps?

I have bought a new red top battery and tried to jump the car today, but it didn't work. Not sure i was getting a good earth off the engine, as when we jumped it on sunday we used a screwdriver to reach & connect to the negative terminal on the Cerb battery, rather than connecting the jump lead to the engine. Perhaps i need to do that to get a good earth? or do i need to order a new starter as well?

thanks for input

Steve

FarmyardPants

4,294 posts

241 months

Tuesday 14th May 2013
quotequote all
My advice would be to install your new battery. Make sure the terminals are clean and tight. Check the big earth from the battery -ve to the chassis, and from the chassis to the engine. That's the basics. If you still have problems, look at the starter. You can get them refurbed/buy fit your own or just take it to your local TVR specialist (Racing Green did mine) and ask them to change it. If the new battery doesn't hold up (problems start to recur), look at the charging circuit: 100 amp fuse and alternator.

tony cerbera

67 posts

156 months

Tuesday 14th May 2013
quotequote all
i had the same problems as you and changed the battery and it is fine now

sjc1969

Original Poster:

392 posts

161 months

Tuesday 14th May 2013
quotequote all
Cheers for advise. soon as its dry outside i will change the battery. Shame i didn't get it in my garage when we got back from thunder in the tunnels.

Tony: your car was sooooo loud, how did you do it?

Steve

Tanguero

4,535 posts

224 months

Tuesday 14th May 2013
quotequote all
Before you spend a lot on changing batteries, try jumping the starter solenoid signal wire ( the thin one that goes into an oversize grey connector housing) to the battery positive and see if that starts it easily. If it does then it is likely to be the immobiliser internal relay for the starter circuit that is degrading and causing the problem.
If the starter still just clicks when directly activated, then look towards starter or battery issues as suggested.

Its also worth checking the engine earth connections.

Ireland

3,517 posts

237 months

Tuesday 14th May 2013
quotequote all
I'd agree with the suggestion to check the immobiliser.


ukkid35

6,383 posts

196 months

Wednesday 15th May 2013
quotequote all
Tanguero said:
Before you spend a lot on changing batteries, try jumping the starter solenoid signal wire ( the thin one that goes into an oversize grey connector housing) to the battery positive and see if that starts it easily. If it does then it is likely to be the immobiliser internal relay for the starter circuit that is degrading and causing the problem.
If the starter still just clicks when directly activated, then look towards starter or battery issues as suggested.

Its also worth checking the engine earth connections.
Before you spend even more on a new starter motor...

The chances are it's simply voltage drop due to the immobiliser. If Peter's test proves positive then you have four options:

Rewire the immobiliser
Replace the battery
Replace the starter motor
or
Fit a helper relay - total cost about a fiver

Your choice, and the only one that is likely to fix the problem is the cheapest!

Paul - Pink Cerb at Battersea

Tanguero

4,535 posts

224 months

Wednesday 15th May 2013
quotequote all
Unfortunately if the immobiliser relay is on the way out, it is likely to fail totaly in the end. If that happens then even a helper relay won't work, though it is a good temporary measure while you save up for a new alarm/immobiliser!

sjc1969

Original Poster:

392 posts

161 months

Wednesday 15th May 2013
quotequote all
Tanguero said:
Before you spend a lot on changing batteries, try jumping the starter solenoid signal wire ( the thin one that goes into an oversize grey connector housing) to the battery positive and see if that starts it easily. If it does then it is likely to be the immobiliser internal relay for the starter circuit that is degrading and causing the problem.
If the starter still just clicks when directly activated, then look towards starter or battery issues as suggested.

Its also worth checking the engine earth connections.
i have just tried jumping the starter solenoid and the engine turned over straight away smile

ukkid35

6,383 posts

196 months

Wednesday 15th May 2013
quotequote all
Tanguero said:
Unfortunately if the immobiliser relay is on the way out, it is likely to fail totaly in the end. If that happens then even a helper relay won't work, though it is a good temporary measure while you save up for a new alarm/immobiliser!
Not necessarily. I've used a helper relay for the last year in the Cerb, and in my other car I've had a helper relay for the air-con for the last six or seven years (much easier than replacing the under specced NLA relay in the air-con head unit).



sjc1969

Original Poster:

392 posts

161 months

Wednesday 15th May 2013
quotequote all
ukkid35 said:
Not necessarily. I've used a helper relay for the last year in the Cerb, and in my other car I've had a helper relay for the air-con for the last six or seven years (much easier than replacing the under specced NLA relay in the air-con head unit).
Hi Paul,
Was good to meet you at TiTT, was great fun.

Will this relay be ok?

http://www.maplin.co.uk/40a-relay-for-automotive-a...

sorry but i dont know much about electrics.


ukkid35

6,383 posts

196 months

Wednesday 15th May 2013
quotequote all
I'd recommend a fused relay instead

http://www.ebay.co.uk/itm/360609428391

Not a great photo but you can just about make out the relay and that I've taken the +ve feed from the big fuse.


Tanguero

4,535 posts

224 months

Wednesday 15th May 2013
quotequote all
ukkid35 said:
Tanguero said:
Unfortunately if the immobiliser relay is on the way out, it is likely to fail totaly in the end. If that happens then even a helper relay won't work, though it is a good temporary measure while you save up for a new alarm/immobiliser!
Not necessarily. I've used a helper relay for the last year in the Cerb, and in my other car I've had a helper relay for the air-con for the last six or seven years (much easier than replacing the under specced NLA relay in the air-con head unit).
If the immobiliser relay fails completely, the helper relay doesn't get a signal at all. As I found out when my last immobiliser failed!

sjc1969

Original Poster:

392 posts

161 months

Wednesday 15th May 2013
quotequote all
relay ordered. If i want to get the immobilisor replaced, where should i go? Fernhurst? they are local. I hear carl baker is now in France and would have been the obvious choice.

Jhonno

6,430 posts

164 months

Wednesday 15th May 2013
quotequote all
sjc1969 said:
relay ordered. If i want to get the immobilisor replaced, where should i go? Fernhurst? they are local. I hear carl baker is now in France and would have been the obvious choice.
http://www.pistonheads.com/gassing/topic.asp?h=0&a...

Tanguero

4,535 posts

224 months

Wednesday 15th May 2013
quotequote all
All the alarm/immobiliser parts are available from http://www.abacuscaralarms.co.uk/

It is a relatively straightforward job to fit yourself, though be aware that the alarm pairs with the immobiliser unit so both units may need to be replaced together. Abacus were very helpful with advice when I did mine.

Jhonno

6,430 posts

164 months

Wednesday 15th May 2013
quotequote all
Tanguero said:
All the alarm/immobiliser parts are available from http://www.abacuscaralarms.co.uk/

It is a relatively straightforward job to fit yourself, though be aware that the alarm pairs with the immobiliser unit so both units may need to be replaced together. Abacus were very helpful with advice when I did mine.
Yep.. Very helpful for me as well when ringing for advice/info.

sjc1969

Original Poster:

392 posts

161 months

Wednesday 15th May 2013
quotequote all
ok, so i got a relay and wired it up. I got about 3 turns of the engine and then nothing again, just the click of the solenoid. So i then jumped the solenoid wire again, and this time i only get a click from the solenoid. Has my starter motor just packed in? I have already replaced the battery this morning with an optima red top.

Jhonno

6,430 posts

164 months

Wednesday 15th May 2013
quotequote all
Sounds like a sticking motor/solenoid if it doesn't go from the "jump".. Battery definitely charged fully?

Tanguero

4,535 posts

224 months

Wednesday 15th May 2013
quotequote all
Sounds like it isn't the immobiliser then.

If you are only getting a solenoid click with a good fresh battery and directly activating the signal wire then my next first step would be to double check the earth connections to the engine (lower passenger side of the block) and to the chassis (back of the passenger wheel arch). If that makes no difference then the next step would be to pull the starter.