Q: Truck is missing only when it is in gear

asked by on

A couple weeks ago my truck started randomly missing while driving then gradually got worse till it was constantly missing but only while in gear.It runs fine while in park.I replaced plugs,wires,and coil packs about a year ago.Yesterday I changed the fuel filter,cleaned the MAF sensor and checked all vacuum lines for a leak and it is still doing the same thing.The check engine light is not on or flashing and it isn't throwing any codes on a scanner.What am I missing here?I don't understand what else could cause it to do this.

My car has 161000 miles.
My car has an automatic transmission.

Hi there, thanks for writing in.

If this problem only happens when you’re in gear and accelerating, its very possible that it could have a transmission problem that causing a hesitation. I have seen issues like this before. It’s also very possible for the MAF sensor to cause a rough running condition without throwing a fault, or it could have a clogged fuel filter causing low fuel pressure. A clogged or sticking injector wouldn’t set a fault, but can cause a rough running condition as well. There could be a problem with a knock sensor or with the ignition timing. The best place to start would be checking if it’s a transmission problem or an engine problem. If it ends up being an engine problem, start by checking the fuel pressure and ignition timing. If you want to have this issue professionally diagnosed, you can contact a qualified independent technician through YourMechanic.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Truck is missing only when it is in gear

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

Get a quote

What others are asking

Q: What do the different ignition switch positions do?

Your car has several different ignition positions. They each offer slightly different functionality. Understanding what each does is important for being able to use your vehicle correctly. Here’s what you should know: Off: In this position, the engine is...

Q: Q: Steering issues

It is possible that the play you are feeling in your steering wheel may be related to worn out wheel bearings. The wheel bearings may not be noticeable in the steering wheel when the vehicle is stopped or parked,...

Q: My 2003 Town Car is showing that the 8th cylinder is misfiring. Do I have to replace the ignition coil as a result?

Hi, thanks for writing in. A misfire code only says the cylinder is not contributing to power in the motor. You may have no or low compression, a bad coil, injector problems, or a plug problem. Have the coil removed...

Related articles

Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.