Blowing a Fuse

Seymour · 23rd May 2021, 09:10

Hello,

I am having continuing issues with a 15 amp fuse blowing.

It is at the top of the main engine fuse box and the picture says it is an engine fuse.

The fuse is replaced and the car is good for a few more km and then it blows again.

It seems to happen when the car is cornering rather than on a straight.

Any information welcome. 75 Connoisseur 2003

Thanks in anticipation.

stevestrat · 23rd May 2021, 09:22

Check the wiring under the engine bay fuse box, it has been known for the insulation to rub through on the bodywork.

bsafly · 23rd May 2021, 09:32

Check the wiring to the Lambda sensors, they can rub on the exhaust heat shields and short out causing the fuse to blow.
Had this issue with my ZT-T 190 caused by distorted heat shields which would randomly blow the fuse (engine ECU/Lambda heater circuit).
Hope that helps, Paul.

macafee2 · 23rd May 2021, 14:13

the wiring harness can scrape the arms that hold the front crash beam

macafee2

23rd May 2021, 09:10	#1
Seymour Newbie Rover 75 Join Date: Aug 2020 Location: Ellenbrook Posts: 4 Thanks: 0 Thanked 0 Times in 0 Posts	Blowing a Fuse Hello, I am having continuing issues with a 15 amp fuse blowing. It is at the top of the main engine fuse box and the picture says it is an engine fuse. The fuse is replaced and the car is good for a few more km and then it blows again. It seems to happen when the car is cornering rather than on a straight. Any information welcome. 75 Connoisseur 2003 Thanks in anticipation.

23rd May 2021, 09:22	#2
stevestrat This is my second home ZT260 #243 (resting) Join Date: May 2010 Location: Prestonpans Posts: 22,479 Thanks: 650 Thanked 4,624 Times in 3,358 Posts	Check the wiring under the engine bay fuse box, it has been known for the insulation to rub through on the bodywork. __________________ Steve T4 Location Map

23rd May 2021, 09:32	#3
bsafly Just going about! Rover 75 CDTi Connie SE Tourer starlight silver and serpents. MG ZT-T 190+ in Raven Black. Join Date: Mar 2016 Location: Great Leighs Posts: 468 Thanks: 626 Thanked 167 Times in 110 Posts	Check the wiring to the Lambda sensors, they can rub on the exhaust heat shields and short out causing the fuse to blow. Had this issue with my ZT-T 190 caused by distorted heat shields which would randomly blow the fuse (engine ECU/Lambda heater circuit). Hope that helps, Paul.

23rd May 2021, 14:13	#4
macafee2 This is my second home Rover 75 Saloon & Tourer Join Date: Sep 2012 Location: Lincoln Posts: 14,928 Thanks: 1,630 Thanked 3,032 Times in 2,181 Posts	the wiring harness can scrape the arms that hold the front crash beam macafee2