I have a '96 GMC Jimmy 4.3. I put a new fuel pump and tank in; also, a new cap and rotor. When it's cold, it won't start.

Main Navigation

Advertisement
Social Connect
Resources
Our Brand Family
Counterman Magazine
Counterman has been serving auto parts jobbers, retailers and distributors since 1983.
Education

I have a ’96 GMC Jimmy 4.3. I put a new fuel pump and tank in; also, a new cap and rotor. When it’s cold, it won’t start.

I have a '96 GMC Jimmy 4.3. I put a new fuel pump and tank in; also, a new cap and rotor. When it's cold, it won't start. When it's warm, it starts, then idles fine, but when you give it gas, it runs rough. I put the code reader on it and it's a random mis-fire. Any ideas?

Counterman Staff
By Counterman Staff

I noticed you didn’t say anything about plugs and wires. A cap and rotor usually doesn’t do much good with out them. Change those and I bet your luck changes.

Related Articles

Matthew Vaughn
O’Reilly Auto Parts

If this is a Central Port Injection 4.3 (VIN W) you may be experiencing injector poppet failure. A new-improved version of the CPI injector module made by SMP is available through your parts supplier. If yours is a Throttle
Body Injection 4.3 (VIN Z) you may want to check ECT sensor or MAP sensor.

Jim O’Neill
Chino Autotech Inc.

You May Also Like

Education

Common Causes of Oil Leaks

Generally speaking, there are only a few common causes for the majority of oil leaks on the road.

Eric Garbe
By Eric Garbe

Pick a parking lot, any parking lot, and you can tell what spaces get used the most by the number of oil spots. It’s easy to think of it as just a mess, but the unfortunate reality is it’s a bigger cause of pollution than meets the eye.

Read Full Article

More Education Posts
Turbochargers and GDI: A Winning Combination

Automakers have turned to turbochargers and GDI to boost fuel economy and horsepower – with less displacement.

By Brian Sexton
Decoding Honda’s VINs

The automaker’s engineering prowess isn’t necessarily on display in its VIN encoding.

By Thomas Dayton
Staying Comfortable Behind the Counter

Ergonomics can play a big role in your on-the-job comfort and overall health.

By Thomas Dayton
Auto Parts Manufacturers Share Their Perspectives

Chloe Hung, Eric Luftig, Michael Kitching, Eric Sills and Matt Roney discuss what’s top of mind for their businesses.

By Amy Antenora

Other Posts

Software-Defined Vehicles in Focus at Vision Conference

Experts from Boston Consulting Group will discuss their study on who will own the connectivity profit pools.

By Counterman Staff
A Closer Look at Crankshafts

With the great power of the engine comes the great responsibility of the crankshaft.

By Eric Garbe
Spring Cleaning and Seasonal Stocking

Before the public comes calling for their spring cleanup needs, this is the perfect time to take care of our own.

By Thomas Dayton
Ball Joints: How Much Play Is Too Much?

There’s a common misconception that any play in a ball joint means it’s
wearing out.

By Eric Garbe