Having problems with your 1999 Lincoln Navigator ?

2003 lincoln navigator sputtering while driving

Posted / edited by AnonymousUser on : 17-06-2019

Answers :

Hello, what you need to do first is get a scan of the engine. You can get a free scan at Autozone, Oreillys, Advance and perhaps your local places. Some faults will be recorded in the onboard computer, ask for Alternator test too. If you can get a Code number we can explain it for you.
\012Other defects, like Vacuum leaks and fuelpump pressure need different testing. This sounds like a EGR Solenoid going bad, but not bad enough to establish a check engine light. If you temporarily disconnect and plug the Vacuum hose to the EGR valve, you can drive it and see if the sputtering stops with the part eliminated. This may trigger a check engine light but the Code can be erased with a scanner or by disconnecting the NEG terminal of the Battery. The preferred method is to use a scanner(Autozone, etc.). I have the identical Year engine in my truck.
\012Vacuum leaks- use a spray water bottle and go aroung the gaskets on the Intake manifold while the engine is running. Also spray the Brake booster and if the RPM changes at either place you need to fix the leak or replace a part. Fuel pressure-This requires a gauge test on the fuel rail test port. Your fuel Regulator can be sticking, dirty fuel filter, fuelpump going out, the tests will tell. You can take it to an Independent or Dealer for these tests.
\012I hope you find my solutions helpful and please let me know what you discovered.
Repair Help & Product Troubleshooting for 1999 Lincoln Navigator

Tips for a great answer:

- Provide details, support with references or personal experience .
- If you need clarification, ask it in the comment box .
- It's 100% free, no registration required.

Suggested Questions/Answers :

Loading ...

  • Start your question with What, Why, How, When, etc. and end with a "?"
  • Be clear and specific
  • Use proper spelling and grammar
all rights reserved to the respective owners || carrestorationshop.com || Terms of Use || Contact || Privacy Policy
Load time: 0.0085 seconds