5.4 Makes a rattle when starting...
Thread Starter
|
Senior User
Joined: Apr 2004
Posts: 119
Likes: 0
5.4 Makes a rattle when starting...
Just bought a 1998 Expedition (Eddie Bauer) and it ran perfect for the first few days.
Not realizing the keys were chipped, I had an extra set made and went to start it up with the non chipped keys. (my wife had the original key) It made a real rattle sound the theft light came on and it stalled. Now that I realize those keys are chipped, I used the original key, and it still makes the rattle at start up. It is a 5.4L with about 118,000 miles.
Any ideas? Could I have damaged something using the store bought key?
Not realizing the keys were chipped, I had an extra set made and went to start it up with the non chipped keys. (my wife had the original key) It made a real rattle sound the theft light came on and it stalled. Now that I realize those keys are chipped, I used the original key, and it still makes the rattle at start up. It is a 5.4L with about 118,000 miles.
Any ideas? Could I have damaged something using the store bought key?
Thread Starter
|
Senior User
Joined: Apr 2004
Posts: 119
Likes: 0
I hadn't taken it for a drive since it was making the sound. Decided to take it out for a quick run, and the rattle seems to have gone away. Hopefully it stays away.
But if anyone else has ever had this or has any insite, please post.
But if anyone else has ever had this or has any insite, please post.
New User
Joined: Sep 2006
Posts: 22
Likes: 0
Same Problem
I have the same problem. When I first start my 99 Navi, it rattles for a bit from the front of the engine somewhere the after its warm it stops. I am thinking either a belt tensioner or timing chain tensioner.
Senior User
Joined: Feb 2005
Posts: 252
Likes: 0
Possibly the ac is on. If you have the auto climate function the compressor engages when you start up even if you're not using the ac to cool off.
Try starting the truck with the auto climate off. Try again with it on. I think the compressor runs because it is removing excess moisture in the air. The clunk or rattle is the compressor clutches engaging
Maybe this helps, maybe not...
Try starting the truck with the auto climate off. Try again with it on. I think the compressor runs because it is removing excess moisture in the air. The clunk or rattle is the compressor clutches engaging
Maybe this helps, maybe not...
Thread Starter
|
Senior User
Joined: Apr 2004
Posts: 119
Likes: 0
Thanks for the info guys... I'm not even sure if I have auto climate. It might. I only bought this truck 2 days ago and it has so many bells and whistles I can't even comprehend. I'm used to my 93 Explorer XL which had no options and no problems.
But I am definatley going to take your comments and look into both. It gives me a little peace of mind to hear it doesn't sound too serious.
But I am definatley going to take your comments and look into both. It gives me a little peace of mind to hear it doesn't sound too serious.
Postmaster
Joined: Oct 2006
Posts: 4,171
Likes: 12
From: SE Texas
The most common thing I see with the modulars that have that rattle are the timing chain tensioners bleeding down,or the lash adjusters bleeding down.That's typically caused by using a filter with a crappy anti-drainback valve(fram,etc..).
JL
JL
Trending Topics
Posting Guru
Joined: Sep 2004
Posts: 2,452
Likes: 0
Originally Posted by Johnny Langton
The most common thing I see with the modulars that have that rattle are the timing chain tensioners bleeding down,or the lash adjusters bleeding down.That's typically caused by using a filter with a crappy anti-drainback valve(fram,etc..).
JL
JL
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
Postmaster
Joined: Oct 2006
Posts: 4,171
Likes: 12
From: SE Texas
Originally Posted by lowrider1212
all you guys are weird. the noise your hearing is the air ride compressor kicking on. when its done leveling out it will go off.
JL
