renault megane cabriolet 1997
Printed From: the12volt.com
Forum Name: Vehicle Wiring Information & File Requests
Forum Discription: Request Car Alarm, Car Stereo, Cruise Control, Remote Starter, Navigation, Mobile Video, and Other Vehicle Specific Wiring Info, Manuals, Tech Tips
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=113860
Printed Date: May 09, 2024 at 11:11 PM
Topic: renault megane cabriolet 1997
Posted By: chrispot
Subject: renault megane cabriolet 1997
Date Posted: May 17, 2009 at 4:52 PM
the problem i have is that when i turn on the blower motor / fan the wipers move, and the wipers dont work by using the controls, i think that its a earth problem, checked under the bonnet all ok the ones that i can see, there are some earth points in the o/s and n/s foot wells but they are ok, does anyone know where the earth points on this car are, regards chris.
Replies:
Posted By: i am an idiot
Date Posted: May 17, 2009 at 10:23 PM
Howie, Help!!!
Posted By: howie ll
Date Posted: May 18, 2009 at 2:23 AM
It's a Renault! = French! It's a Migraine (Megane) Don't look for the obvious! First run your earths (grounds) directly to the battery neg. I wouldn't expect too much body conductivity for grounding in a 12 yr. old Ren. Second, make sure your blower fan is also well grounded. Third make sure plugs into both are well pushed home. Had a Ren Clio recently where the wipers would only work when you physically held the plug in. Standard Law of Auto Electrics:- Look for electrical systems failures in French cars after 3 years.
Posted By: chrispot
Date Posted: May 18, 2009 at 4:56 AM
sounds right to me megrain, i had run a seperate earth to wiper motor body and all works ok, but i still would like to find the exact fault, but to find it i might have to remove dash, if i find the fault i will post, thanks for the help, regards chris.
Posted By: howie ll
Date Posted: May 18, 2009 at 2:05 PM
Don't go opening a can of worms, as I said, bad ground, it was grounding through the adjacent blower motor with which it shares its earth (ground, I tend to use the American expression because, a) This is a US based web site and b) The term really only applies to 3 wire grounded or earthed AC systems. Removing your dash, although very easy, that's where I alarm them, pull tweeter covers and remove 2 x T20 torx screws, the whole thing then pulls out but it's totally irrevelant, wiper and blower motor are in the scuttle section at rear top engine bulkhead.
Posted By: chrispot
Date Posted: May 18, 2009 at 7:57 PM
thanks for the info, i know that the blower and wiper motors are in the scuttle but i could not see any earth points, all is ok if i ground / earth the wiper motor body, which is what i might do, its just that i like to find the exact fault and cure that if possible, thanks once again regards chris. ps. sites like this would be crap without people like you!
Posted By: howie ll
Date Posted: May 19, 2009 at 6:18 AM
No reason why not, but if you have 2 speeds, then you should have 4 wires, perm ignition to cancel when you turn the wipers off,speed one, speed two and an earth, probably black. Take that wire to the battery neg. N.B. Intermittent speed and wash/wipe are controlled by a processor in the car at the fuse box and feed out as speed one.
Posted By: chrispot
Date Posted: May 19, 2009 at 9:02 PM
i done that today and all is ok, also sorted electric roof just got to do speedo now, not working someone has had a go at the wiring at the speed transducer. Just out of intrest do renaults have a bad rep for wiring problems or is it just my one. thanks once again its been a pleasure dealing with you, keep up the good work, regards chris.
Posted By: i am an idiot
Date Posted: May 19, 2009 at 9:15 PM
From what I have learned from Howie, you are not alone.
Posted By: howie ll
Date Posted: May 20, 2009 at 3:48 AM
I know it's a stereotype but :- All French cars will have electrical problems after 3 years, Italians one year + parts falling off. M/Benz, gear box and suspenson failure. VW/Audi Engine management + gearbox problems, shared with Ford ref deisel engines.
Posted By: chrispot
Date Posted: May 20, 2009 at 8:06 AM
my old car was a toyota supra mk3 which i had for 11 years with no electrical problems at all just the head gasket at 147,000 miles, my present car is a mk4 toyota supra, no problems as yet, it seems to me that the japs are good at building cars as you do not mention any japanese manufacturer. luckly the meganes the wifes car. (unlucky for me as iam the one that fixes it). regards chris
Posted By: ckeeler
Date Posted: May 20, 2009 at 9:12 AM
chrispot wrote:
it seems to me that the japs are good at building cars as you do not mention any japanese manufacturer.
it should seem that way to everybody in the world by now unless they are just ignorant or just refuse to believe it. the proof is in the pudding.
Posted By: howie ll
Date Posted: May 20, 2009 at 1:27 PM
CK, you guessed why I ommited the Japs, having said that 2 x Nissan Maxis,both autoboxesa t 75,000miles, u/s Ac on the first. Now 1999 Galant, 60,000miles in 2 years,used 24/7, water pump went last xmas, flex pipe to front of exhaust couple of months ago, now head gasket. Back in the 80's I had a couple of Galants, again autoboxes failing, one at 36,000 miles. I'll get either a Legend, a Mits FTX (it's got a trunk) or a 2.5 Galant. The truth is the head gsket was probably tied into the water pump faIlure and if you don't flog them to death like I do you're probably right about the longevity.
Posted By: ckeeler
Date Posted: May 20, 2009 at 2:21 PM
if the timing belts are changed at the proper interval, the engine is not overheated or run low on oil, they seem to run for ever. i still own (and drive) a 1984 Nissan 200sx, over 240,00 miles on it now. still gets better mileage than my newer ones too. i dont even change the oil in it anymore, i dont think i have for 6 years now. i just change the filter every 2000 miles and add 1 quart of oil. jap cars do have stuff that breaks for sure, but besides the normal stuff i.e. timing belt, brakes, filters, battery, CV shafts, they are far less problematic by a long shot.
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