An expert who has achieved level 3 by getting 1000 points
An expert that got 10 achievements.
An expert that got 5 achievements.
An expert whose answer got voted for 500 times.
Re: 1997 expedition engine pinging on accelleration
There are alot of things that could cause pinging but the most economical and easiest thing to try first is to clean the MAF sensor.Remove the MAF and clean the sensor bulbs with a good electrical cleaner and light shop air or just let it totally air dry then hook it back up and do several wide open throttle burst to reset the baro readings.
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
the engine is pinking thats all ,use a higher grade fuel ,it should run on 95 octane but try it on 98 octane and this will cure it .timing chains loose ?? i think this mechanic needs to go back to school
Couple of items can cause this:
manual shift valve, transmission range sensor, idle air control or fuel pressure regulator. Only once I had to replace the ECU.
I would scan for codes first and see what you get.
it just may be too low of octane in your fuel. does the car require 89 or 93 octain gas? if it requires 93 octain gas and you are pumping 87 octain fuel in it to save money, you may pay for the savings later on. the pinging sound you hear when accellerating is the ignition of the fuel at the improper timing because of the lower octain. this will eventually damage the engine. since you say you hear this when you accellerate tells me that this may be the issue. hopefully this is what it is because it will be easy for you to resolve. hope this helps.
Lots of times the idle air control valve gets stuck on these engines. You can try cleaning it. Remove the air intake hose from the throttle body. Start the engine and spray throttle plate cleaner through the hole in the bottom on the throttle body. This will run the cleaner through the idle air control valve. make sure to keep the RPM's at about 2000 to 2500 throughout this procedure. You may need to install a new idle air control valve if it continues to happen.
I had the same problem! I crawled underneath the car and discovered that a heat shield on the exhaust header pipe was corroded and rattling against the exhaust pipe. (Before the muffler) I removed the portion and clamps and solved the problem. Give it a try.