explorer pinging
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explorer pinging
I havw a 95 explorer,it has 302,000k on it just had trans rebuilt and I noticed the engine pinging under light load,it also has a miss when idling,time for plugs and wires or time for a rebuild?I was told the timing chain was on its way out.
Cargo Master
Joined: Aug 2003
Posts: 3,263
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From: BC Canada
Never seen a timing chain go bad in the X engine.
Ping is usually associated with running lean, check for vacuam leaks and clean the MAF.
Have you pulled any codes?
Do the plugs and wires, do not use Champion, I find NGK (P) and Motocraft(Px2) work best.
BTW, we have X engines with 335,000+k and 425,000k, never opened other than intake gaskets.
Ping is usually associated with running lean, check for vacuam leaks and clean the MAF.
Have you pulled any codes?
Do the plugs and wires, do not use Champion, I find NGK (P) and Motocraft(Px2) work best.
BTW, we have X engines with 335,000+k and 425,000k, never opened other than intake gaskets.
Last edited by aquanaut20; May 23, 2007 at 10:14 AM.
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Originally Posted by aquanaut20
Best to test the O2, before replacing them. dont throw $$$ away.
Pull the codes (even if the MIL is off)
After you do the tune-up (get rid of missfire) then we can look at the other problems.
Pull the codes (even if the MIL is off)
After you do the tune-up (get rid of missfire) then we can look at the other problems.
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well thanx alot guysI will do plugs and wires and go from there,I get a random check engine light,how do I check the codes on this??
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Cargo Master
Joined: Aug 2003
Posts: 3,263
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From: BC Canada
Since you unit is pre 96 (start of OBDII) you can follow the following proceedure,
http://fords.kilonet.org/ken00/EECIVQT.pdf
http://fords.kilonet.org/ken00/EECIVQT.pdf
Cargo Master
Joined: Aug 2003
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From: BC Canada
When you are finished with your tune up and have pulled the codes for us, here is some more reading and test proceedure for your O2's.
http://www.mr2.com/TEXT/O2_Sensor.html
Note; 9 0f 10 that I have tested proved to be well within operating perameters, and the owners just wasted their hard earned cash.
http://www.mr2.com/TEXT/O2_Sensor.html
Note; 9 0f 10 that I have tested proved to be well within operating perameters, and the owners just wasted their hard earned cash.
Cargo Master
Joined: Jun 2003
Posts: 2,982
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From: Somewhere Saskatchewan
Originally Posted by aquanaut20
When you are finished with your tune up and have pulled the codes for us, here is some more reading and test proceedure for your O2's.
http://www.mr2.com/TEXT/O2_Sensor.html
Note; 9 0f 10 that I have tested proved to be well within operating perameters, and the owners just wasted their hard earned cash.
http://www.mr2.com/TEXT/O2_Sensor.html
Note; 9 0f 10 that I have tested proved to be well within operating perameters, and the owners just wasted their hard earned cash.
The codes will point to a system and the first thing people do is install a widget.
Then bitch because it didn't work. 
Senior User
Joined: May 2004
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From: Las Vegas, NV
I had a mild ping under load that was difficult to diagnose. It slowly became worse. I tried everything including engine diagnosis, plugs and wires (the plugs showed signs of timing problems) and cleaning the mass air flow sensor. But it didn't help. The O2 sensors showed within range on the scanner.
I ended up changing the timing chain, tensioners and guides for the dreaded rattle (a separate noise made by my engine). The ping went away. I fiugre the slop in the time chain from the worn out guides was causing the pinging problem, too.
Also, I thought there was a TSB for a slip of the timing chain drive due to a key that can come out. But I can't find it now.
I ended up changing the timing chain, tensioners and guides for the dreaded rattle (a separate noise made by my engine). The ping went away. I fiugre the slop in the time chain from the worn out guides was causing the pinging problem, too.
Also, I thought there was a TSB for a slip of the timing chain drive due to a key that can come out. But I can't find it now.
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