answersLogoWhite

0


Best Answer

The brand of fuel you are using may cause it. I had started using UNOCAL super for awhile in my Buick Regal/86 and it went away. It had started when the blend in my preferred fuel was modified for the season change. Go up a grade of fuel or change station brands for awhile. /Alex

User Avatar

Wiki User

19y ago
This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: What would cause a 1990 Oldsmobile to make a knocking noise?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

What would be causing a knocking sound in your muffler?

A hole in the muffler would cause a knocking sound in your muffler. A loose exhaust pipe can also cause a knocking noise.


What would cause a knocking noise when you turn your wheel?

Power Steering?


What would cause a knocking sound when not stepping on the gas?

can you elaborate? engine noise? stationary/moving? ticking, tapping or a definite knocking?


What would cause a loud knocking noise in the front of the car when you accelerate?

you may have a rod knocking and you need to take it to a shop asap


What would cause a knocking noise when you use your brakes in the car?

Typically, a knocking noise when to use your brakes in the car is caused by your brakes wearing down. This means you need to get them checked out and repaired.


What would cause single Knocking noise when braking or turning?

A single knocking noise when braking or turning can be caused by a faulty axle. The cost of replacement is usually around 1,000 dollars.


What would cause a loud knocking noise in engine upon starting?

Running too lean.


What would cause a knocking noise when braking?

Normally caused by worn steering or suspension components.


What would cause a loud knocking noise coming from the engine at 70 mph and make the truck shake very badly?

Having a bad rod bearing could cause a truck to make a loud knocking noise and shake when driving at high speeds. The engine having a coolant leak or an engine timing problem could also cause the knocking noise.


What could cause a loud knocking noise in the right rear on a 93 Taurus It's not wheel bearing shock mounts or sway bar. Does it mostly when going over bumps.?

I would check the suspension bushings, if one of them is worn it would cause a knocking noise.


What would cause a knocking or clunking noise from rear tires when turning?

You probably need your bearings repacked


What would cause a Knocking noise 4.3 ltr?

The thing that could cause a knocking noise in your car is the same thing that could cause it in all cars A rod that or a flat lifter. it all really depends on where the knock is if its higher and to the back of the motor, it could be a motor mount