Question about 2000 Dodge Caravan

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Ticking sound on 2001 dodge grand caravan 135000mi

I have a ticking sound coming from my 2001 grand caravan. I recently changed the oil, this seemed to decrease the sound but not eliminate it.
It increases with the rpm's of the engine.

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  • vishalrawat Nov 22, 2008

    It seemed at 1 time to be that when i put my heater power switch on the noise would start and sometimes it would stop for no reason.

  • bradnana Dec 15, 2008


    AS OF 10/2008
    Engine Mechanical problem
    2002 Dodge Caravan 6 cyl Two Wheel Drive Automatic 77000 miles

    I have an '02 Dodge Grand Caravan 3.3L V6 with 77k miles on it. Bought it with 58k. Have only used synthetic oil since then & it has always run smoothly. Recently I went a bit long between changes (maybe 2k mi. overdue) & it started to tick slightly. Now that I have changed the oil, it is ticking worse. Sounds like it's coming from the back of the engine (right bank?) and I can hear it better from underneath. I used a stethoscope (long piece of flexible tubing) to try locating the sound and can hear it loudest when the tube is over a freeze plug (but the water pump sounds fine). I put in oil additive (the thick stuff used to reduce smoking), but it's made no difference. It has never smoked and doesn't now, but I thought it might help with the tick. Oil level is correct on the dipstick. I have a P0420 code. Could it be a bad rocker or lifter and be misfiring and causing the sensor to pick it up in the exhaust? The tick is easy to hear at idle but can't be heard at high RPMs. It's practically impossible to hear from inside the vehicle. Power & mileage still seem OK.

    UPDATE******
    I have been driving my Caravan continuously since first noticing the ticking sound. I just made sure to keep a close eye on fluid levels. About two week ago, the ticking stopped completely, and that made me think it must have been a lifter. I must have been wrong about the A/C.

    Last week, I made a long, cross-country trip to the Smokie Mountains. We drove about 500 miles or so to get there and the engine still sounded fine when we arrived. We drove all throgh the mountain region for about 4 days with no ticking at all.

    Then about half way home, I noticed the tick starting again when I pulled in for gas. It was not loud enough to hear while on the interstate though. I know the engine was under more stress than usual. I ran an average speed of about 75mph most of the way. When I finally pulled into my driveway, the ticking noise was loud and clear again.

    Probably a lifter, huh? Is there any way to manually pump them up or check them without any major disassembly?

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Turns out it was the water pump. The plastic impeller on the inside had broken in half- split almost right down the middle. there was just enough of the impeller remaining to attach to the shaft and pump water. Apparently, it was pumping enough to keep the temp under control. So, I never noticed it overheating. The piece that had broken off had gotten lodged in a recessed area inside the pump housing. The ticking noise was being generated as the intact half of the impeller rotated and hit the broken off half.

I narrowed down the problem by removing the belt and cranking the engine temporarily. With the belt off and the pump not turning, the sound was gone. I could spin the pump pulley by hand and faintly hear the noise.

A new pump cost me $35 and took about two and a half hours to replace.

Posted on Jan 28, 2009

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Hi, My 2000 Caravan had the same thing. It is probably your lifters. I fixed my noisy lifters by putting a liter of tranny fluid in with the oil. I ran the van for about an hour or 2 then changed the oil.

Posted on Dec 08, 2008

  • karinmcd Jan 28, 2009

    The ticking sound is probably sticking lifters. I fixed mine by doing the following......added 1 liter of tranny fluid to oil before changing it. Ran the van for about 1-2 hours then changed oil and filter. The tranny fluid has detergents that clean your engine, but don't run it for more than 2-3 hours with it in. Do this the next couple times you change your oil, and it should make a big difference. I also add STP for engines when I change my ol. Hope this helps.

  • mochamad8001 May 14, 2010

    I got the same problem, there is a liquit that is for cleaning the engine; you use it before you change the oil. is that pretty much the same as by adding the tranny fluid, which one is better or is the same result ..please reply a s a p
    Greatly appreciated

    max
    Ontario

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Could be sticking hydraulic lifters or it could be bottom end connecting rod bearings how is oil pressure ? is the engine running smooth ? any power loss? check oil pressure

Posted on Jun 30, 2008

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