Q: EGR valve stuck closed in 1988 F-150

asked by on

I have a 1988 F150 5-liter. It runs for a couple of minutes and then it dies. I have codes for the throttle position sensor--EGR valve stuck closed. It's not in the truck and I plug the TPS and it bugged. Is there any way to test the EGR valve?

Although it says the EGR valve is stuck closed, that’s not going to make the car stall. You would get more nitrous oxides in the catalytic converter fluid. So, it doesn’t affect that. The EGR valve problem is not the one that is making it die. The throttle position sensor can easily make it go bad.

I would say just change the throttle position sensor. That would be the first thing I do. But, when cars die, there are a lot of reasons why they can die. Check out my video "how to fix a car that idles poorly" and also check for the vacuum leaks in the engine. If you have a vacuum leak, that’s going to make a car die, too.

If you want to have this looked at by a professional, a technician from YourMechanic can come to your home or office to check your EGR valve and diagnose your car’s stalling issue.

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. EGR valve stuck closed in 1988 F-150

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: My car has idling problems that come and go

The biggest problem with inconsistent engine idle issues is trying to diagnose them. However, there are a few other components you haven't listed that might be faulty. The first is the throttle position sensor. It's likely your Mitsubishi has an...

Q: F150 5.0, oil pressure warning light will come on and off

You should have the instrument cluster checked and scanned for codes and check engine harness on drivers side to see if it is shorting out on back of engine near injectors. If no problems are found with harness or codes...

Q: Transmission only works in reverse.

Hi there. Circuit 1 failure means that there is a blown fuse in your fuse box. Look in the fuse box for a blown fuse and replace it. The circuit may relate to the transmission shift module. If you replace...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
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.