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Service schedule for 100,000+ miles
My 2002 (Dodge) GC ES with 3.8L has just passed 110,000 miles.
Does anyone have a maintenance guideline/schedule that should be followed with the higher miles on the engine/tranny? For the 3.8L engine, what is the recommended time to replace the timing belt/chain? If the engine has not been stressed, what would be a safe delay in replacing it? what other work should be rolled into the timing belt replacement? Any other tips for keeping this thing going another couple years? |
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#2
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Service schedule for 100,000+ miles
Steph wrote:
> My 2002 (Dodge) GC ES with 3.8L has just passed 110,000 miles. > Does anyone have a maintenance guideline/schedule that should be > followed with the higher miles on the engine/tranny? Follow the same mileage/time intervals that were recommended prior to 100k miles. > > For the 3.8L engine, what is the recommended time to replace the timing > belt/chain? If the engine has not been stressed, what would be a safe delay > in replacing it? what other work should be rolled into the timing belt > replacement? The 3.8 has a timing chain, not a belt. I would only replace it if some other service needs to be performed in that area, such as replacing a gasket on the timing case cover. It may develop some slack at very high mileage so that the valve timing isn't as stable and precise as it was early on, but it is very unlikely to jump time because it uses metal gears. > > Any other tips for keeping this thing going another couple years? Just keep taking care of it. Change the oil, coolant, and other fluids as you always have. Don't neglect it or put off maintenance on the assumption that "it won't last long enough to really need that" because that tends to become a self-fulfilling prophecy We just retired my wife's Chrysler LH car with 256,000 miles on it, and I suspect whoever buys it will get a few more years good service out of it. |
#3
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Service schedule for 100,000+ miles
Steve wrote:
> ...The 3.8 has a timing chain, not a belt. I would only replace it if some > other service needs to be performed in that area, such as replacing a > gasket on the timing case cover... Steve - I don't know this engine, so I'm asking for my learning (or maybe to catch you in a mistake - Ha - not likely!): Is the water pump on that engine driven by the timing chain? I'm curious as The 2.7L engine in my Concorde has a timing chain (I know it's not the same engine) - nice, since timing chains generally last the life of the vehicle - EXCEPT they have the water pump driven by the chain, and of course water pumps do fail. (I did the timing chain, water pump, and oil pump about 3 months ago at 207k miles as a preventative - I was probably lucky the water pump lasted that long - they have been known to come apart and do damage (if not bearing damage from leaking coolant into the engine if the owner/driver was not paying attention, then suddenly locking up and pretty much doing catastrophic damage to the engine). Anyway - I mainly just wanted to get confirmed for the OP that the water pump was not driven off the timing chain on that GC. -- Bill Putney (To reply by e-mail, replace the last letter of the alphabet in my address with the letter 'x') |
#4
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Service schedule for 100,000+ miles
Bill Putney wrote:
> Steve wrote: > >> ...The 3.8 has a timing chain, not a belt. I would only replace it if >> some other service needs to be performed in that area, such as >> replacing a gasket on the timing case cover... > > Steve - I don't know this engine, so I'm asking for my learning (or > maybe to catch you in a mistake - Ha - not likely!): Is the water pump > on that engine driven by the timing chain? No, the 3.3 and 3.8 are close cousins, and they have a traditional belt-driven waterpump. The timing chain drive is similar to the 318 v8, the slant-6, the 440, smallblock Chevy, and all the other old-school engines- just a sprocket on the crank and one on the cam connected by a chain, no idlers, no tensioners, no waterpump. >I'm curious as The 2.7L > engine in my Concorde has a timing chain (I know it's not the same > engine) Right- its very different from both the pushrod v6 engines like the 3.3 and 3.8 and from the other OHC v6 family (the 3.5 and 4.0 belt-timed SOHC engines. Its truly a one-of-one engine in the Chrysler family. Even the similarly oddball 4.7 v8 has a related v6 version (the 3.7). > Anyway - I mainly just wanted to get confirmed for the OP that the water > pump was not driven off the timing chain on that GC. Not unless they've radically changed the 3.3/3.8 in ways of which I'm unaware. I'm sure one of the dealer techs will pipe up if I got it wrong. ;-) |
#5
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Service schedule for 100,000+ miles
"Steve" > wrote in message
... > Bill Putney wrote: >> Steve wrote: >> >>> ...The 3.8 has a timing chain, not a belt. I would only replace it if >>> some other service needs to be performed in that area, such as replacing >>> a gasket on the timing case cover... >> >> Steve - I don't know this engine, so I'm asking for my learning (or maybe >> to catch you in a mistake - Ha - not likely!): Is the water pump on that >> engine driven by the timing chain? > > > No, the 3.3 and 3.8 are close cousins, and they have a traditional > belt-driven waterpump. The timing chain drive is similar to the 318 v8, > the slant-6, the 440, smallblock Chevy, and all the other old-school > engines- just a sprocket on the crank and one on the cam connected by a > chain, no idlers, no tensioners, no waterpump. > > >I'm curious as The 2.7L >> engine in my Concorde has a timing chain (I know it's not the same >> engine) > > Right- its very different from both the pushrod v6 engines like the 3.3 > and 3.8 and from the other OHC v6 family (the 3.5 and 4.0 belt-timed SOHC > engines. Its truly a one-of-one engine in the Chrysler family. Even the > similarly oddball 4.7 v8 has a related v6 version (the 3.7). > >> Anyway - I mainly just wanted to get confirmed for the OP that the water >> pump was not driven off the timing chain on that GC. > > Not unless they've radically changed the 3.3/3.8 in ways of which I'm > unaware. I'm sure one of the dealer techs will pipe up if I got it wrong. > ;-) > Right. Not sure about your 2k2 but on the '90s 3.3/3.8 to remove the water pump you: drain the coolant remove the serpentine belt wrap the belt around the water pump pulley strap wrench style and remove the 3 bolts holding the pulley on remove the 5 bolts holding the water pump to the volute cast into the timing cover. The pump seals to the timing cover with a large O-ring and in my case I didn't even have to remove the wheel well splash shield although that probably would have made the job slightly easier. |
#6
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Service schedule for 100,000+ miles
Doing a water pump on the 3.3 or 3.8L is very simple, but I never removed
the belt pulley. I simply removed the entire belt by simply de-tensioning the belt tensioner (15mm bolt head as I recall). Also, access is much, much easier through the passenger side front wheel well after removing the wheel and the plastic inner fender shield. My last comment is that at 100K+ miles, if you are replacing the pump, it is a very good idea to replace the serpentine belt and also consider replacing the tensioner and idler too if they are making any noise at all. Bob "Daniel Who Wants to Know" > wrote in message news:l7d9l.515052$yE1.453584@attbi_s21... > "Steve" > wrote in message > ... >> Bill Putney wrote: >>> Steve wrote: >>> >>>> ...The 3.8 has a timing chain, not a belt. I would only replace it if >>>> some other service needs to be performed in that area, such as >>>> replacing a gasket on the timing case cover... >>> >>> Steve - I don't know this engine, so I'm asking for my learning (or >>> maybe to catch you in a mistake - Ha - not likely!): Is the water pump >>> on that engine driven by the timing chain? >> >> >> No, the 3.3 and 3.8 are close cousins, and they have a traditional >> belt-driven waterpump. The timing chain drive is similar to the 318 v8, >> the slant-6, the 440, smallblock Chevy, and all the other old-school >> engines- just a sprocket on the crank and one on the cam connected by a >> chain, no idlers, no tensioners, no waterpump. >> >> >I'm curious as The 2.7L >>> engine in my Concorde has a timing chain (I know it's not the same >>> engine) >> >> Right- its very different from both the pushrod v6 engines like the 3.3 >> and 3.8 and from the other OHC v6 family (the 3.5 and 4.0 belt-timed SOHC >> engines. Its truly a one-of-one engine in the Chrysler family. Even the >> similarly oddball 4.7 v8 has a related v6 version (the 3.7). >> >>> Anyway - I mainly just wanted to get confirmed for the OP that the water >>> pump was not driven off the timing chain on that GC. >> >> Not unless they've radically changed the 3.3/3.8 in ways of which I'm >> unaware. I'm sure one of the dealer techs will pipe up if I got it wrong. >> ;-) >> > > Right. Not sure about your 2k2 but on the '90s 3.3/3.8 to remove the > water pump you: > drain the coolant > > remove the serpentine belt > > wrap the belt around the water pump pulley strap wrench style and remove > the 3 bolts holding the pulley on > > remove the 5 bolts holding the water pump to the volute cast into the > timing cover. > > The pump seals to the timing cover with a large O-ring and in my case I > didn't even have to remove the wheel well splash shield although that > probably would have made the job slightly easier. > |
#7
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Service schedule for 100,000+ miles
Thanks everyone!
I posted this in the Dodge usenet group and got nothing. The van just turned over 110,000 miles. On very cold mornings it does make a slight squeak squeak for a few minutes. I figure it is the serpentine tensioner. The serpentine belt is still in good shape - and as far as I know the water pump is still good. My 97 3.8L engine didn't fair so well, but other than a tranny rebuild at 12,000 and again at 30,000 (don't ask!) and then a A/C condenser and oil pan replacement it has been good and strong. It is in desperate need of a oil change and probably could use a throttle body service soon as well. I was just trying to get an idea of what servies should be done and when. "Bob Shuman" > wrote in : > Doing a water pump on the 3.3 or 3.8L is very simple, but I never > removed the belt pulley. I simply removed the entire belt by simply > de-tensioning the belt tensioner (15mm bolt head as I recall). > > Also, access is much, much easier through the passenger side front > wheel well after removing the wheel and the plastic inner fender > shield. My last comment is that at 100K+ miles, if you are replacing > the pump, it is a very good idea to replace the serpentine belt and > also consider replacing the tensioner and idler too if they are making > any noise at all. > > Bob > > "Daniel Who Wants to Know" > wrote > in message news:l7d9l.515052$yE1.453584@attbi_s21... >> "Steve" > wrote in message >> ... >>> Bill Putney wrote: >>>> Steve wrote: >>>> >>>>> ...The 3.8 has a timing chain, not a belt. I would only replace it >>>>> if some other service needs to be performed in that area, such as >>>>> replacing a gasket on the timing case cover... >>>> >>>> Steve - I don't know this engine, so I'm asking for my learning (or >>>> maybe to catch you in a mistake - Ha - not likely!): Is the water >>>> pump on that engine driven by the timing chain? >>> >>> >>> No, the 3.3 and 3.8 are close cousins, and they have a traditional >>> belt-driven waterpump. The timing chain drive is similar to the 318 >>> v8, the slant-6, the 440, smallblock Chevy, and all the other >>> old-school engines- just a sprocket on the crank and one on the cam >>> connected by a chain, no idlers, no tensioners, no waterpump. >>> >>> >I'm curious as The 2.7L >>>> engine in my Concorde has a timing chain (I know it's not the same >>>> engine) >>> >>> Right- its very different from both the pushrod v6 engines like the >>> 3.3 and 3.8 and from the other OHC v6 family (the 3.5 and 4.0 >>> belt-timed SOHC engines. Its truly a one-of-one engine in the >>> Chrysler family. Even the similarly oddball 4.7 v8 has a related v6 >>> version (the 3.7). >>> >>>> Anyway - I mainly just wanted to get confirmed for the OP that the >>>> water pump was not driven off the timing chain on that GC. >>> >>> Not unless they've radically changed the 3.3/3.8 in ways of which >>> I'm unaware. I'm sure one of the dealer techs will pipe up if I got >>> it wrong. ;-) >>> >> >> Right. Not sure about your 2k2 but on the '90s 3.3/3.8 to remove the >> water pump you: >> drain the coolant >> >> remove the serpentine belt >> >> wrap the belt around the water pump pulley strap wrench style and >> remove the 3 bolts holding the pulley on >> >> remove the 5 bolts holding the water pump to the volute cast into the >> timing cover. >> >> The pump seals to the timing cover with a large O-ring and in my case >> I didn't even have to remove the wheel well splash shield although >> that probably would have made the job slightly easier. >> > > > |
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