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1998 Oldsmobile Bravada - Page 2 Questions & Answers
1998 Olds Bravada 4.3 liter engine. Electrical
Disconnect battery ? Hoping for a magical fix ? Battery light on means there is a charging system problem , alternator not the battery . Do you know how to do automotive electrical circuit testing ? If not your best bet , take it to a qualified repair shop .
How To Check Charging System EricTheCarGuy Some of the problems are likely do to a low voltage condition . It would also have the vehicle control modules checked for DTC'S - diagnostic trouble codes ! Doing electrical testing of the circuits of the thing's not working etc... is the way to find the problem .
Electric Testing Techniques You Need to Know
It takes years to learn how to do electrical test correctly . Someone who has no clue shouldn't even try .
1998 Oldsmobile Bravada low beams always on
Where do you have the switch off or auto ? Turn them off !
2
Use the scan tool in order to read the body control module (BCM) current trouble codes.
Is DTC B2575, B2577, or B2600 set as a current code?
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Go to Diagnostic System Check - Body Control System in Body Control System
Go to Step 3
3
Remove the DRL relay from the underhood bussed electrical center (UBEC).
Do the daytime running lamps remain ON??
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Go to Step 4
Go to Step 5
Check the headlamp power relay in the underhood fuse / relay box !
1998 Bravada, losing power, now wont start
Does it have spark , fuel pressure ? If the starter spins the engine an does not start an run , you have a fuel delivery problem or a ignition system problem . There are videos on youtube showing how to test for these .
Ok I have a 1998 Olds. Bravada the heater core is
Replacing the heater core is a pain as it is at a very hard place to get at under the dash. If you want an idea of what is required, you could look at alldatadiy.com for repair info.
How do you know the core is partially plugged? If the core isn't plugged too badly and you don't have a hose leak showing up now and again near the core, the leak is probably at a pipe solder joint on the core that is failing (usually due to a rough hose installation, vibration, or stress from the hoses as the engine moves about).
As far as trying to stop a core leak, I have never had much success. If the core is not plugged too badly and the leak is small, you could try stop leak first (an aluminum particle based product, NOT Bars-Leak). More often than not flushing just makes it worse and beyond the capability of a stop-leak product to fix it.
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