'Rattling' type noise under acceleration

**Bik'nRanger** · Nov 27 2003, 11:00pm

I am starting to get a rattling type noise under acceleration and can't tell if it is engine related or tranny/transfer case related. I have a 4x4 auto 4.0 sohc. Anyone have a similar sound under throttle?

**Zypher** · Nov 27 2003, 11:38pm

I get it when I am towing my trailer and the truck downshifts to either pass or to go uphill. It sounds to me that it is in the tranny / transfercase. But I'm not sure. I sure hope it isn't.

**thecause17** · Nov 28 2003, 04:36am

Check the heat shields on your cats...

**powered by FORD** · Nov 28 2003, 07:07am

I have a similar problem with my '99 3.0 auto/4x4. Mine only does it after its been sitting awhile. Even if I let the engine warm up completely it still does it, so I think it's the tranny. Once she warms up she's fine and it's been doing this for years so i'm not too concerned about it. Good luck.

**Zoom** · Nov 29 2003, 07:56am

You've got an 01, which had problems with the primary timing chain rattle. Notice if it does it between 2500-3000 rpm, and more when cold than hot.

**Bik'nRanger** · Nov 30 2003, 08:03am

Zoom -
Yes, it is definitely between 2 - 3k rpm, really noticeable uphill, and louder before temp gage gets up in the normal range. Is there a cure and what do I need to know before going in to the dealer? Thanks for the help.

**Zoom** · Nov 30 2003, 11:10am

Take this to the dealer with you, and cross your fingers. They really don't like to do this work. It only helps if your still under warranty, but it won't hurt to try even if you're not.

TSB 02-08-01 April 29, 2002
1999-2002 EXPLODERS, EXPLO SPORT TRC, EXPLOD Sport AND RANGERS - Mountaineers
ISSUE-
Some vehicles eqipped w/4.0L SOHC may exhibit a Pri Timing Chain Noise. Audible during Hot and Cold engine operation. Predominantly found on cold engines under acceleration (2400-2500RPM). This may be caused by Pri Timing Chain Tensioner system.
ACTION -
Replace the Primary Timing Chain Tensioner, Chain guide, Jackshaft and Crankshaft sprocket. This is a kit.
FOR ALL RANGERS USE KIT 2U3Z-6D265-BA (non balance shaft engines).

**Bik'nRanger** · Nov 30 2003, 11:29am

Thanks - I'll call this week. It should not be a problem as it is under warranty until August '04 (late year model).

**FireRanger** · Dec 01 2003, 12:48am

Originally posted by Bik'nRanger
Thanks - I'll call this week. It should not be a problem as it is under warranty until August '04 (late year model).

Hehehe. Keep thinking that. Sometimes, basic and obvious warrenty repairs are like pulling teeth.

**ranger_mulisha** · Dec 01 2003, 09:09am

Just a thought, but maybe it's the U joints? My truck made sounds like that that went away sometimes and came back so I changed the U joints and the rear u joint was wrecked.

**Jerad** · Dec 02 2003, 10:34pm

I had a squeaking noise from the rear of my truck... I thought it was the tire rack. Come to find out the rack was solid as could be and the noise was a dry cap on the rear u-joint.

I also have about 2 or 3 heat shields that are loose that rattle a very annoying rattle under acceleration and idle... time to get under there with a pop-rivet.

Good luck!

**lownrangr** · Dec 03 2003, 01:40pm

mine make the same rattling noise around 3k rpm's. I guess it's the timing chain.

**23fnord** · Dec 08 2003, 06:38am

I've had my Ranger in 3 times for the TSB fix. The truck still makes the noise. After I demanded to see a factory rep, the service manager was told by Ford to check oil pressure to the heads, which checked out OK. I then had to road test it with him to 'verify the concern' ie. make him hear the damned noise. Now, I have to take it in because he claims that it might not be the timing chain tensioners after all, but the 'air injection diverter valve' making this noise, between 2500-3000 rpm, louder cold than hot, after all. Opinions?

**Zoom** · Dec 08 2003, 12:43pm

Air injection diverter valve? Tell him to show it to you. They haven't used those since they quit using air pumps for smog control.

The old air pump systems pumped air into the exhaust to help any remaining fuel burn. The diverter valve blocked this airflow under deceleration so it wouldn't backfire.

I know the rattling can be fixed, I had it done on my Mazda per the TSB almost a year ago, and after 10,000 miles it's still as quiet as my 03 is. It might show back up sometime but so far it's done well.

Just noticed you were new 23fnord, welcome to RPS!

**23fnord** · Dec 08 2003, 11:04pm

Thanks for the welcome.

I can't believe that this guy is flat out lying to me like this. I'm headed there in an hour, and I will indeed ask him to show it to me. In fact, I'm going to take my digital camera along, and take a picture of the part he says is a 'diverter valve.'

It might be time to start using those phone numbers of high-muckity-mucks listed on blueovalnews.com. This is ridiculous.

**23fnord** · Dec 09 2003, 02:26am

Heh, got there, manager grabs a flashlight and starts looking for it, and says 'Hmm, there isn't one on here.' So, I don't think he was lying to me, he was just trying to figure out what, other than the chain tensioners could make that particular noise. After being in the shop 4 times for the fix, I'm sure he wishes this problem will just go away. Now I have to wait for a Ford engineer to come look at and listen to my truck, and hopefully figure out how to fix it....

**Zoom** · Dec 09 2003, 11:07am

Kind of makes you wonder about a service manager that still looks for parts that were discontinued around 20 years ago, doesn't it?

Let us know what you find out. I don't know of anything other than the timing chain assembly that's been found to cause that noise, but there are a few who can't seem to get it to go away either.

**IMNOBUG** · Dec 15 2003, 01:47am

my dads 93 2wd 4.0 makes the same clattering noise...from 1/2 throttle to anything further. it also has low oil pressure...never read normal since we have had the truck. i thought the clatter was from low oil pressure. then someone told me it was something to do with timing. what do i need to do to cure this? thicker oil to raise oil pressure?

**Zoom** · Dec 15 2003, 11:00am

It's probably time to replace the oil pump and pickup screen on a 93. Thicker oil would probably make it worse.

**Superanger** · Dec 15 2003, 11:28am

I am just curious, will the rattling in the sohc 4.0(caused by the cam chain tensioner) cause any reliability problems. Cause my dads sohc 4.6 f-150 does the same thing, and still runs well after 100,000 miles.

**IMNOBUG** · Dec 16 2003, 03:05am

any idea whats the deal with the clattering noise on my dads 93?

**Dex** · Dec 16 2003, 08:33am

Originally posted by IMNOBUG
it also has low oil pressure

well you answered your own question
Buy and engine being a 93 it has a lot of miles on it and is worn out.

:er:

**Dex** · Dec 16 2003, 08:38am

Originally posted by Superanger
I am just curious, will the rattling in the sohc 4.0(caused by the cam chain tensioner) cause any reliability problems. Cause my dads sohc 4.6 f-150 does the same thing, and still runs well after 100,000 miles.

yes if you let it go on too long it will eventually get loose enough to let the cam jump timing and its bad news after that because its done messed up

**akspeedemon** · Dec 16 2003, 03:12pm

Yea, mine does that too. I have a 2003 4.0 sohc. i think that its the lifters. Now, i know that sounds slightly rediculous, cause its all the way up there, but listen. it only does it when im about a 1/2 quart or more low on oil, and i here it all the time, its a ticki tick tick sound reall fast. like on muscle cars with solid mechanical lifters. im pretty sure thats all its guys.i think they cheaped out and didnt give us roller lifters.

**Zoom** · Dec 17 2003, 10:36am

You aren't hearing the fuel injectors and thinking it's lifter noise are you? The 24 lb injectors on the SOHC are noisier than the 19 lb injectors on the OHV. You can't hear them inside the cab though, or at least I can't.

**IMNOBUG** · Dec 22 2003, 05:19am

Originally posted by Zoom
Take this to the dealer with you, and cross your fingers. They really don't like to do this work. It only helps if your still under warranty, but it won't hurt to try even if you're not.

TSB 02-08-01 April 29, 2002
1999-2002 EXPLODERS, EXPLO SPORT TRC, EXPLOD Sport AND RANGERS - Mountaineers
ISSUE-
Some vehicles eqipped w/4.0L SOHC may exhibit a Pri Timing Chain Noise. Audible during Hot and Cold engine operation. Predominantly found on cold engines under acceleration (2400-2500RPM). This may be caused by Pri Timing Chain Tensioner system.
ACTION -
Replace the Primary Timing Chain Tensioner, Chain guide, Jackshaft and Crankshaft sprocket. This is a kit.
FOR ALL RANGERS USE KIT 2U3Z-6D265-BA (non balance shaft engines).

how about my 93? i got the same rattle noise but it seems more when its hot than cold.

**Zoom** · Dec 22 2003, 10:15am

Won't help you on your 93, sorry. I'd say with yours it's just normal wear and tear, and the pistons are starting to slap a little. Or it could be lifter noise too. Or rocker arm wear starting to show up as noise.

**joshyx** · Dec 22 2003, 10:37pm

m 01 has the same sounds but its coming from the a/c clutch...

**Bik'nRanger** · Dec 23 2003, 09:40am

Finally got the thing in for service last week and they replaced the belt tensioner and the serpentine belt, and then ordered the kit for the timing chain TSB. It should be in next week and we'll see if that clears it up.

**ReDLine** · Dec 23 2003, 09:55am

i put mine in about 10k miles ago...and it STILL does it...this is really scaring me...im about to go off to college and i dont want it to break on me.......i keep my acceleration below 2500 everytime, but just one time today i pushed it again and i heard it.....the SOHC really makes a lot of noise and vibration when u step on it....not sure why

'Rattling' type noise under acceleration

LinkBack

Thread Tools

'Rattling' type noise under acceleration

Finally got it in

Bookmarks

Bookmarks

Posting Permissions