Outer Limits 4x4 Board

i own a 85 mk and i was driving home tonight and all of a sudden all the gauges started to read half of wat they were reading only 1 minute before hand and wen i went to push it past 2000 rpm it would die in the ar$e and climing small crest on a main road nearly dieing on top of that my ralley 4000s were behaving like a set of night visions it was as tho it was only gettin half their voltage and the engine ran like a bucket like it was out of petty or there abouts its a L24 motor if ne1 can shed sum light on this prob for me i would greatly appreciate it thanks inadvance
cheers Bourkey

If the motor was running when these problems developed I would have to say Alternator, perhaps brushes? or points. These are wearing parts and may have faded over time, it might even be your coil. do you have a manuel for reference?
If not it is a really easy job for a home mechanic with common sense, check the bible for instructions, or ask here!

Money on altenator. Put a voltmeter across your battery with the motor running. Should be at least 13.8V. If not, probably easiest just to get another alternator. They have a limited lifespan anyway. If for some reason this doesn't fix it, you have a spare alternator!

thanks for all ur help mates if im runnin a 27 mhz with 40 watt out put aswell as a swag of other electrics would that be affecting it? also if it is my alternator that would explain why the charge light isnt coming on and it aint charging because now i cant start her spewin!

sounds alternator. Check to see the belt is there for a start. Brushes can be replaced easilyif you are mechanically minded.

And an L24? Did you put that in? I thought they only ever had L28s in them?

Regards,
g@z.

rockrover wrote:if im runnin a 27 mhz with 40 watt out put aswell as a swag of other electrics would that be affecting it?

Doubt it. 40W isn't a great deal of power (a few amps will get you there) and that's only when you're transmitting. If you're running lots of power hungry lights and a biiig stereo you might start to get worried. The standard L28 alternators pump out around 60 amps. You're probably not exceeding that without knowing about it.

the plates say it had an l28 in it but when i bought her it had the engine num l24..... and so on so no i got her like it but the belt has been checked and i put a multimetre across the terminals wile running ..(had to clutch start it) and it read 12.5V so im guessing seeing as tho the alternator says its a 14V4 and 70amp it should produce at least 13.5V i pulled it out and removed the brushes and they hav plenty left on them but it has these little terminals on the base of the brushes that was rather dirty and a little corroded so i cleaned them up cant see nethin obviously rong with it im not familiar with alternators really just kno they hav brushes lol ...the terminal out to the battery was dirty but not wat u would call coroded or nethin like that just mud could it be an earth my mate said it could be but im not sure where to start thanks in advance,
cheers Bourkey

pulled the terminals and cleaned them reinstalled alternator and new belt shes sweet again runs heaps better more power than b4 sitting in 4th (top gear) i can now feel exceleratin from 3000rpm up to 4000rpm and more responsive too didnt realise it but she must hav neva been running at full power as now my ralley 4000s run brighter than ever b4 it now reads 14.7 across the battery terminals ..thanks guys for all your help with out it id still be scratching the old noggan.....
Cheers Bourkey

14.7V sounds a bit high, and might kill your battery. Might pay to get the regulator checked.

Regards,
g@z.

g@z wrote:14.7V sounds a bit high, and might kill your battery. Might pay to get the regulator checked.

Regards,
g@z.

Or the Volt meter. Id just keep an eye on the battery water and if it Starts dissapearing, Do something about it then

Glad to hear shes all sweet

thanks mates shes runnin a constant 14.2 V now heaps better power and i got my 27mhz radio to work properly too now...all sweet..lol cheers Bourkey