06-30-2013, 11:45 AM
Join Date: Mar 2009
Location: Georgetown, Guyana
Suzuki used the Jimny name on many different vehicles over the years - when you say an old (10+ years) Jimny, we still don't have a clue as to what you're driving.
First - let me deal with a pet peeve - I don't buy that "keep the tank half full" crap, which manufacturer would equip a vehicle with a 20 gallon fuel tank that could only be used for 10 gallons - where's the sense in that?
As far as I'm concerned as long as there's fuel in the tank to run the engine, there is enough fuel in the tank to cool the pump, it's not the fuel surrounding the pump that cools it, it's the fuel flowing through the pump.
There are three vehicles in my signature, all of them have the original in tank fuel pumps, my son drives the Swift, and I swear he has figured out a way to get it to run on fumes - I've seen him drive for days with the needle on or below E - if there was any truth to that tale, that pump would have long burned up - the other two vehicles I drive, and I don't fill them until the needle is down to E.
Now - onto your problem - the FI fuse feeds the entire EFI system, not just the fuel pump, but also the injectors, ignition, heated O2 sensors (if fitted), EGR (if fitted) - any one of those can cause the fuse to blow.
If the vehicle has multi port injection (one injector per cylinder) take a close look at the injector harness, some vehicles are known to have chafing issues which can wear through the insulation and cause shorts.
98 - 1.8 Mitsubishi Pajero iO
98 - 2.0 Suzuki Grand Vitara - SQ420
05 - 2.0 Suzuki Grand Vitara - JB420
15 - 2.4 Kia Sportage