MG-Cars.info

Welcome to our Site for MG, Triumph and Austin-Healey Car Information.

Recommendations

Parts

MG parts spares and accessories are available for MG T Series (TA, MG TB, MG TC, MG TD, MG TF), Magnette, MGA, Twin cam, MGB, MGBGT, MGC, MGC GT, MG Midget, Sprite and other MG models from British car spares company LBCarCo.

MG MGF Technical - Fuse blow on 97 MGF when turning left

Hi

I m just back with a new question, not my car (we now have 3 MGF & TF) but behalf on someone else!

Its a 1997 MGF LHD and it blow a fuse and become dead (imobiliser).

Car start and work again as soon as the the blown fuse is replaced. Is this a common thing?? where should we look and for what, as soon as one turn left and "flash" - fuse blow and car is dead!
RN Roar

Which fuse is blowing? Sounds like a wire is damaged somewhere and making a short circuit when cornering to the left. Traditional areas for wiring faults are behind the centre console & in the rear bulkhead/boot loom, but if you can identify which fuse is blowing that may give a clue where the fault is.
bandit

Hi

OK,, just have a little more info - when turning left (FLASHING) fuse number 1 (10A) blows, covers flash various instruments and power steering stops working BUT CAR STILL RUN.

But if you then operate the control remote unit like locking car while fuse number 1 has blown, fuse number 5 (I think) under bonnet 15A covering central lock/Alarm also blows - then car is dead!! (obviously)

Is the 2nd issue a natural following of the first? just one electrical fault that triggers the 2nd issue?
Any help appreciated!!
RN Roar

There is no link between passenger compartment fuse 1 and underbonnet fuse 3 (central locking) as far as I can see, so a wiring fault or short circuit perhaps behind the centre console would be my first guess.

From Dieter's site:

http://www.mgfcar.de/schedules/sb1.jpg

http://www.mgfcar.de/schedules/sb17.jpg

2nd issue will maybe go away when 1st issue solved - fingers crossed...
bandit

If the fuse blows when you operate the indicator switch, then I would suspect that there is a live wire being short circuited to earth (ground) within the switch mechanism.
Sam Murray

Hi

Well, problem solved! Here is the full story
! Car belong to a friend and when we got it in our hands we quickly realized that fuse blew,, but not every time we turned left! hmmm. We had a spare stalk but it did not cure the problem though there was a slight smell of warm leads/ plastic from dash! A deep dive behind console as indicated above was needed and there is was :-) A lead was damadged behind the stereo and making a temporary/periodic short cicuit! Why it only happened when turning left was most probably because some leads in the dash harness were slightly pulled on hard left turns! (I guess)
RN Roar

This thread was discussed between 03/02/2012 and 26/02/2012

MG MGF Technical index

This thread is from the archives. Join the live MG MGF Technical BBS now