2000 ohv- 73000 miles. At idle it honestly sounds like a rod knocking- but when you give it any gas at all or drive it the noise stops immediately. oil pressure is perfect and the oil was just changed. also- driving it around town it clicks sometimes like the ac is on and you can kind of feel the engine bog- bit obviously the ac isnt on


thanks

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2000 Ranger Super cab 4x4- 4.0/3.73's/5 Speed
TBAR max/31x10.50 Yokahoma AT/S

2005 Explorer XLT 4x4- 4.0/3.73's/AUTO

i have same problem but only when its really really cold outside, same truck 2000 xlt 4.0 5 speed and i have 120,000miles, ive been wanting to ask this question but keep forgetting
i know this doesnt help but i wanna know the solution too hah

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2000 XLT 4.0 OHV 4x4 Manual. Superlift 4"
Custom 2.5in CatBack courtesy of Hanksville Hotrods
K&N FIPK. Goodyear Wrangler MTR's LT305/70R16 Load range E diesel tires! about 34" diameter
16" Pro Comp 7069's cast aluminum. 4.56 with Detroit rearend

anything guys?

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2000 Ranger Super cab 4x4- 4.0/3.73's/5 Speed
TBAR max/31x10.50 Yokahoma AT/S

2005 Explorer XLT 4x4- 4.0/3.73's/AUTO

If it goes away when it warms up after a few minutes, I'd put my money on a belt tensioner or idle pulley. Both very easy replacements.

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(Formerly)
FireRanger
2003 Edge 4.0 4wd

How to: Aux light wiring, relays, & fuses
Info: 300+ intake threads here on FRF
Info: HID Projectors
How To: NO HEAT Troubleshooting Guide

its a pushrod engine every 4.0ohv ive had are seen has made this noise mine does it now at idel but you dont hear it going down the road lol. if you have the heater on your ac compreser will click on and off its just something ford deginzed it to do. rf has a mod on how to stop that when you run heat.

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2000 Ford Ranger 4X4 Offroad 5.0 5 speed ext.cab

88 Ford Ranger 5.0 v8 5 speed Reg Cab

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Many Mods

mine also does that its like a ticking noise when i take off in my 04 4.o 5 speed.... its annoying. i can only really hear if i have a wall next to me on the driver side when i take off. is this what your talking about or what may that be what im hearing???

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:04 XLT:4.0:4.10 LSD:4x4:2.5" Catback Flowmaster 40 Series Dumped: 3in body lift: AAL in rear: Cranked tbars: 285/75/16 Toyo M/T: Alpine idx100a: Alpine MRP-500: Alpine type R:Exp OHC:

The 4.0 will do that its just something to deal with, I got my truck when it had 52,000 miles on it and its done it to this day. I have tried everything to stop it, and i mean everything. A good friend of mine who is a "Ford wrench man" told me its just valve chatter.

I know its been awhile since the last post but, I too have this issue. To add to it when I idle and its banging like a heartbeat, when I shut it off, it continues to bang for little while. Anybody have anything else?

Mine sounds like a diesel every now and then. I was told it's carbon interference and to drive at an rpm over 3000 for about 10 minutes and use a good Techron cleaner. It helps, but always comes back.

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1998 Ranger Supercab 4.0L, Medium Metallic XLT, auto, painted valve covers (10 HP), 30x9.5/15.

2008 Mustang GT, stroked 5.0 3v, RGR cams, R2300 S/C, suspension, Kooks LTs w/HF cats GT500 TB, Flowmaster cat-back exhaust, GT500 fuel pump setup.

Mine does this as well. Same noise, on the drivers side mostly, a knock at idle.

My mechanic said... "its a ford, when it quits ticking or knocking....then worry"

so i just let it be.

4.0l ohv has bad rocker arms and push rods and non harded seats. It causes wear on the push rods and rocker seat. Which causes a clatter at idle.

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Banging that's a bigger issue

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What is meant by this, did you hook up a real, mechanical oil pressure gauge or are you making reference to the one on the dash, which does nothing more than read midscale when the oil pressure is 5-7psi (ie, idiot gauge)? Regardless, the old OHV 4.0's were very vulnerable to some slop in the wrist pins, my old OHV 4.0 did it starting around 40K, it's very commonplace, so common in fact that Ford issued a TSB on the subject (no free replacement engines to customers over this issue). The upshot is, it doesn't affect longevity and it's not a reliability concern (FWIW, I proved that with 182K one-owner miles).

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2004 Ranger FX4 Level II, 5R55E, Sonic Blue Pearl

Proudly JAP/RICE free since March 2000

love to see this TSB never spotted that when I was logged into ford tech service, was it a early ohv? like gen 2

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I don't know the exact year it ended, it did apply initially to earlier ones, I learned about it back around 01 or 02. Wendle Ford Service Department and Gus Johnson Ford service department in Spokane, WA were sources I visited in person to talk to about the issue, a very widespread one at that.

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2004 Ranger FX4 Level II, 5R55E, Sonic Blue Pearl

Proudly JAP/RICE free since March 2000

I was talking to a buddy about this (noisy OHV 4.0's) over the weekend and he remembered another issue. Ford kicked up a TSB to cover the late OHV's (possibly 98-00?) with a noise about identical to the wrist pin issue (soft knock, "marbling"), in fact, the root cause for both is about the same (engine assembly using parts with tolerances that are at extremities). Seems like Ford revised the pistons for the final years of the engine and in certain cases (tol's as noted earlier) the skirts slapped around in the cyl a bit. That would worry me. Ford told customers it's normal; I've never personally seen the inside of a high mile 4.0 that had the sound nor heard of an issue (ie, oil consumption) failure because of it, but if there were any I'd be all ears to hear details.

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2004 Ranger FX4 Level II, 5R55E, Sonic Blue Pearl

Proudly JAP/RICE free since March 2000