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How many miles on your 4.0?


spittinfire

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Hey Guys, I've spent a lot of time on this website but lately I haven't been on much at all, thanks to a new job. I know there was a thread on this subject on the old site and since my truck is getting up in miles I thought I'd ask. I know there are a lot of variables to how long an engine will last but I just wanted to see how many miles some of you guys have on your 4.0s. I'm curious because I like my truck and I really don't want to have to start thinking about a new one or car payments. I think if it died I'd rather rebuild the engine but I'd like to just drive it for a few more years. I've currently got 235,000 miles on mine and it runs like a top. Doesn't use oil, has a slight leak at the back of the intake manifold, doesn't knock, and still has good power. So what do you guys have?
 


97ranger4x4

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um I just rolled 123k the other day :) I really dont drive my truck thanks to taking the lightrail for free. gotta love a free commute!
 

zedx

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little over 150K so far.

make that 175xxx so far.
 
Last edited:

dogboy

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I have about 146K (might be 246K, but judging by the condition of the interior, I am thinking it is 146K) on mine. It is still going strong too!
 

rags

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94 4.0 Auto, just turned 196K and engine still runs great. Tranny went at 185K was rebuilt and hopeing for another 185K
 

PL1993

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I've got 205,XXX on mine. I lose a quart of oil every 2500-2700 miles. Don't know where it goes? It doesn't smoke and don't have a puddle under it? It is starting to clatter a little, first start-up on these cold Michigan mornings. But all in all very happy with it.
 

Rulebreaker

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I've got 3 4.0L's. one with 232,000/ one with 240,000/ and another with 86,000 miles. All good runners. RB
 

alpac

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I have a 1990 4.0 with 139k on it. Runs like a champ. No leak, does not consume oil, tranny works great.
 

Woody88

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91 expl. 33Xk kms rebuilt before i bout it though, ran great before i parked it.
 

regnardrof39

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i have about 135k on mine i blew a heater hose on it and i drove to the nearest lake to fill the water back up and now it knocks on start up. soon ill be starting a 5.0 swap
 

97RangerXLT

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I've got 205,XXX on mine. I lose a quart of oil every 2500-2700 miles. Don't know where it goes? It doesn't smoke and don't have a puddle under it? It is starting to clatter a little, first start-up on these cold Michigan mornings. But all in all very happy with it.
it is getting burned. your catyletic converter is burning it so you don't see the smoke.

AJ
 

woodyedmiston

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Ranger Miles

The 99 Ranger I have had 250~ K miles on it when I pulled the engine, replaced three freeze plugs, the oil filter and water pump. I was expecting to drive it another 50K at least. From what I could tell when I tore it down, that would have worked.

I took it outonly because after I reinstalled the motor - did not notice that I had put the heater hoses in a strain by routing them improperly. A plastic connector on the heater control (it's all plastic) broke while I was on the freeway. Before I could get off and find a place to stop the motor was blazing hot. After I fixed the part - a head was cracked.

When I looked at the bearings I could see there was a lot of wear but the clearances were pretty good.. The cylinders might have 5 to 7 thousandths of taper and about a 15 thousandth's (max) ring at the the top of the cylinder. The cam had no flat or ugly spots. The timing chain was not even very loose.

Use the new high mileage oil and really give the cooling system a good flush - the small passages in my cylinder heads were pretty close to clogged. Take a look at that plastic heater valve and replace it if it looks old. Mine had gotten hard and brittle. You should get lots more miles out of it.
 

JohnPi

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240k. Truck in sig. As long as the starter spins, it starts and runs. Not as spry as it was when I bought it with 80k, but it'll get up on the freeway and run with the dogs, and still get 18mpg on a regular basis. Can't ask for much more from a truck that's been paid off for 9 years.
 

96xltV6

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bought it this year, had 182k, now with 193k, and i think its burning coolant. thats on the dash, real mileage unknown (supposedly at 160k an 80k engine was dropped in it) but the 5th injectors plug was on upside down for 30k miles..
im gonna do a coolant flush soon.
 

ghost_rader

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i've got 152xxx on mine
 

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