I recently encountered a problem with my 2000 Ford Expedition running sluggish and misfiring. I tried the typical troubleshooting techniques:
- Installed Sea Foam into gas tank.
- Replaced Mass Air Flow Sensor.
- Replaced PCV valve.
- Checked for leaks in rubber hoses and rubber elbows.
- Spark plugs had been replaced 12 months ago.
- Idle Air Control Valve replaced 7 months ago (failed).
- Be sure to purge gas line pressure and disconnect the battery.
So I went to Rock Auto website, I found the same part for about $28 per coil, but again I am on a tight budget since I had already spent a few hundred already and had no real resolve with the problem.
Last resort, I went to ebay and found a dealer by the name of onlinewholesaleparts and found a complete set of coils for the low price of $79.50 with free shipping. I ordered the parts with the hopes that these would be a quality part (or at least fair quality). When the box arrived a few days later, each coil was boxed (sets of 2) and bubble wrap on them (maybe not the best for electro-static purposes). I decided it was now or never and went ahead with the removal and install.
After about 2-hours, the job was completed. Now for the final test... I started the engine and oops, when I reinstalled the fuel rail I didn't notice the rubber O-ring for the fuel injector had fallen off. Needless to say the engine did not run.
After fixing the O-ring, I fired up the engine and to my suprise the engine purred just like a kitten, in-fact it ran better than when I had bought it 6 years ealier.
I used the Ford F150 Lincoln Ford Grand Marquis Coil part number DG508.
Tools used:
Step Ladder (2000 Ford Expedition)
7, 8, 9, and10 millimeter sockets (from memory)
1/4" or 1/2 Ratchet and extension
Careful precision as to not drop the coil screws into the valley pan area
No, I do not receive any commission or reinbursment for the referral but perhaps you can fix your problem while saving some bucks. When you find something that works and is cheap, I feel a civic duty to pass along the information.
You can find the seller here:
http://stores.ebay.com/onlinewholesaleparts