Viper not starting

Viper not starting

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Discussion

mrfunex

Original Poster:

547 posts

181 months

Saturday 28th December 2019
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Hello all,

I recently bought a battery conditioner for my gen 3 Viper. It’s a CTEK one, and it claimed the battery is fine after ‘conditioning’ for several days.

I managed to unlock the car today, key in, and the dashboard lit up as normal. Pressed the start button and a click of a relay and then nothing. The car is utterly without electrics - no flashing lights, electric windows, or power to anything. At all.

Wondering if the battery could have been a bit iffy and the conditioner sort of finished it off?

Any ideas would be welcome. I’ll be fitting a new battery anyway - it’s the cheapest bit to begin with, and I’ve got no idea how old it is!

sonicbloo

637 posts

157 months

Tuesday 31st December 2019
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Let us know how you get on. I've got a CTEK for my Gen 3 with pigtails on the battery so I can plug it in by reaching through the rear diffuser.

I replaced my battery a couple of years ago (£99) but they don't last for ever if the car is not used much

stevieturbo

17,530 posts

254 months

Tuesday 31st December 2019
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No issues with my c-tek...although as they only do slow charges etc etc, they cannot really offer any info on how a battery will perform under a heavy discharge.

If it needs a new battery...it needs a new battery. But always worth checking any main connections first.

mrfunex

Original Poster:

547 posts

181 months

Tuesday 31st December 2019
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Well, a few fun and games familiar to Viper owners - trying to find the correct type battery! The one fitted was a type 34 with 825CCA and was astonishingly heavy, but I couldn’t find anything like that for sale in the UK.

It also wasn’t easy finding out what spec an OEM battery was! (Turned out to be a type 34/78 supplying 600CCA). I believe that type 34 is essentially the same thing as a type 78, excusing a few mm in size which didn’t make a difference to fitting - at least not in the gen 3 convertible.

So, I bought a type 78 Exide battery with 540CCA from Euro Car Parts for £80. Fitted, it seems to work just fine. I’m hoping the slight reduction in cranking amps won’t be an issue unless I take it to Siberia on a winter road trip.

All weird behaviour of the electrics has ceased - time to reset the soft-close windows (again!) and go for a drive! Thanks for the comments.

Oh, and the old battery was only dated mid-2017, so must have either been mistreated or wasn’t a great one to begin with. Who knows!

Edited by mrfunex on Tuesday 31st December 16:25

viper-bry

57 posts

188 months

Friday 17th April 2020
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Just had a similar issue with my 1993 rt10.

Car would not even start with jump cables linked to a running car sat at 3500 rpm.

Removed battery.... only putting out 8v
Put on charge
Was only showing 11v after 24hrs
After 2 1/2 days on charge, battery showing 13-14 v
Car started first click
Battery is rated 650 cca .... not original

I think the original spec is 780cca


Also.... spoke to my local small garage... a family run village garage.... who advised that some modern batteries dont recharge once they have been run down very low.

fatboy18

19,153 posts

218 months

Friday 17th April 2020
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https://advancedbatterysupplies.co.uk/product/adva...

Fitted a few of these now in Various Vipers smile

Price has gone up a bit in the last 6 months!


Do you guys keep your batteries on a good quality constant trickle charger in the garage?

If not, then that's your problem, there is always a slight drain on these batteries from the alarm and radio. So leaving the car without having it hooked up to a trickle charger will kill it in no time at all.


Edited by fatboy18 on Friday 17th April 17:22

viper-bry

57 posts

188 months

Saturday 18th April 2020
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I have a full battery isolator switch in boot.... just forgot to turn it off..... again..!!

On another note....
Can anyone suggest a viper specialist garage for servicing and repairs..??

mrfunex

Original Poster:

547 posts

181 months

Saturday 18th April 2020
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I’ve used Brookspeed (just outside Southampton) and only a few miles away from me. They're mainly Porsche, but see the occasional Viper, and used to race them in the BritGT championship...