Q: My 1993 GMC Sierra will barely go past 40mph

asked by on November 06, 2016

Hey, i have a 1993 gmc sierra with 256k on it right now. And it will act like it will barley wanna go past 40 mph and when it does you cant hold a speed at all without the rpms going to 2,000 and sometimes 2,500

My car has 256000 miles.
My car has an automatic transmission.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing


Experienced Mechanic?

Earn up to $70/hr

What others are asking

Clutch not working
If your clutch is not working then it may have a bad clutch cable or the clutch itself is bad. A mechanic would typically inspect the condition of the cable and make sure it is moving properly. If it is...
Cylinder #4 misfire, PO304
In order to know for sure that your problem is with the injector for the number 4 cylinder, is to do a fuel pressure leak down. If the fuel pressure does not leak down after you turn on the key...
Could tell me where telescopic steering fuse is located on 2002 BMW X5 E53. My telescopic steering is not working at all. Thank yo
On the BMW X5, the telescopic steering and the driver's side memory seat have the same controls. The fuse box is located behind the glove box. Check fuse numbers 26 and 32 which control both of these. If either of...
Whistling sound when accelerating from a stop
Hello. There could be a vacuum leak in the intake or intake gasket. The breather tube from the air filter box to the intake could have a leak in it as well, which may cause the noise you are hearing....
I have a 1994 Ford F150 XL 4x4 with a EFI 5.0 liter v8 it has a hard time starting when then engine is warm
Hello. You are most likely having problems with the fuel injectors clogged (https://www.yourmechanic.com/services/fuel-injector-replacement) and there is carbon built up on the valves. Try using an injector and combustion cleaner to clean injectors and reduce carbon buildup on the valves. Have...
Car cranks normally but won't start
Unfortunately for an issue like this, some diagnostic testing will need to be performed to identify if the problem is in the ignition system, the fuel system, or one of several other possibilities. I recommend having a certified mechanic, such...
There is a sound noticed when fully turned position in both right and left and forward and backward direction. Grinding sound.
Good question and you are correct. It sounds like it is your power steering pump. There is only one noise a bad power steering pump makes, and no other part will make the same grinding noise as the power steering...
Carbon smell coming out from engine
Hi there. If you are getting a smell like this in your vehicle then it more than likely has an exhaust leak. Since the vehicle is new you should take it back to the dealer to have this issue looked...
Rapid clicking when trying to start engine
Hi there. It sounds like you have either a faulty battery or a failed starter. If the battery has failed, insufficient voltage and amps are supplied to the starter and it cannot turn the engine. If the starter motor has...

Related articles

How Long Does an Oxygen Sensor Last?
Today’s Today’s automotive exhaust systems are much more complex than they once were. They must be in order to comply with much stricter environmental controls and the requirement to create less pollution. Your car’s exhaust includes many different components that...
How Long Does a Throttle Position Sensor Last?
The The throttle body in your car is a rather involved system that is part of its air intake system. The air intake system is responsible for controlling the amount of air that you are letting into the engine. In...
How to Diagnose a No-Spark or Loss of Power Condition on a Modern Car
Misfires caused by a loss of power condition on a car can be tricky to diagnose, but are necessary to fix to avoid further damage and costly repairs.