I have a weird noise from the engine of my Caravan. It's a 3.3 V6 with only 70'000 km's.
At idle you can hear a distinct erratic light rattle/cracking sound. I have taken it to my local Dodge dealer & they road tested it and without any delay they told me that the noise is the normal operation of the lifters, apparently they have heard a few cases of this ??
The noise is loudest if you listen by the right front wheel. I have removed the Auxiliary belt to see if it was a noisy water pump....etc but the noise was still there. It's weird that my 2001 3.3 Caravan did not make a sound & I have not heard it from other Caravans ??
Are Dodge trying to palm me off or has anybody heard of this type of complaint ?
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I too have a 2005 Caravan with the 3.3 V-6. Mine is at 78,000 miles with a similar odd sound from the passenger side of the engine. Lifter noise should be coming from the middle of the engine not the drive belt side in my opinion. I know I have a belt and/or pullly bearing issue.
But if you have removed the serpentine belt then no accessory (water pump, power steering pump, A/C, alternator) or pulley (tensioner/idler) would be turning.
I've been thinking if my noise source could be the timing chain itself.
My van makes the same noise. I think there is some slop in the timing chain and that is whats causing the noise. I was planning on replacing it this summer but had too many other projects and didn't get around to it. I heard another van in a parking lot the other day make the same noise.
97 Ram Sport ext 4x4, 5.9L gas, 3" pro comp lift w dual shocks, 3:55 trac lock
Lt305/70R16 Kumho KL-78, K&N FIPK, Mopar Performance wires and cap, Stainless shorty headers, Walker exhaust. All syn lubes. Sirius sat radio! Magellan GPS
2003 Grand Caravan Sport. 3.3L No toys in it. Nobody's cool in a Minivan...
I feel a little better knowing that it's not just mine making the noise !!
I suppose the guys at Dodge might be telling the truth when they say it's lifters making the noise. They did tell me that not every one makes the noise ?
When I removed the Aux belt I tried to locate the noise with a stethoscope but no matter where I put it I could not pinpoint the noise, but I must admit I did not place it on the cylinder head because the noise sounded low down.
But it does sound exactly like a failing water pump or AC compressor ??
I'll keep an eye on it & if it gets any worse then I guess my power train warranty will come in useful.
I have a 99 caravan 3.3L. 124k.
My wife recently pointed out a noise from the engine.
It sounded to me like a bearing. I checked the idler and tensioner for looseness, grinding or gritty feel. None. There was some rubber stuck to the pulleys which I scraped off but no difference.
I know I need a H2O pump. It weeps a bit in winter. I noticed the pump pulley has some axial play in it.
I also noticed that the main drive pulley seems to be a bit wobbly. It seems tight when the belt is off, i.e., I can't wiggle it by hand, but with the engine running I can see it wobbling. Possible partial de-lamination of the rubber damper? Normal?
Now you guys have me thinking it may be timing chain. I've probed around with a long screwdriver to my ear but can't seem to pinpoint anything definate.
I don't want to take it somewhere and have them just shotgun parts in it til it's fixed. If I have to take it in, I'd like at least a general prognosis first.
Any input from the gurus?
Mine is always. Passenger side, seems to be forward, so H2O pump is a suspect. Hard to determine exact location. As I said, screwdriver to the ear method was inconclusive. I'm concerned also about the seemingly unstable drive pulley/harmonic dampener. Maybe its supposed to appear wobbly and is doing its job . . . dampening. ???
A quick search regarding a noise like that on 3.3 brings up lots of cases where a clogged oil way in the head caused loud lifter noise in the back bank which eventually led to serious damage in fairly low mileage engines. I would not ignore it. Maybe try oil flush and high quality synthetic oil. Several reported Chrysler actually replaced engines under warranty when it started with a single very loud lifter/valve train rattle or click.
Last edited by Hate em but keep buying em; 09-04-2011 at 11:35 PM..
Reason: added info