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Old 11-08-2016, 08:44 AM
 
Location: northern New England
5,392 posts, read 3,953,648 times
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2013 Grand Caravan. The acceleration seems sluggish, as in I want to go faster, I press on the accelerator, nothing happens for several seconds, then it ZOOMS forward (tach goes up).

3.6L V6 DOHC 24V
3600 cc

Would an engine cleaner additive help? Any suggestions? TIA
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Old 11-08-2016, 08:53 AM
 
2,265 posts, read 3,675,590 times
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If I remember right, the 3.6L is drive-by-wire. Had it in 2 of my Jeeps. Might need to be looked at before assuming it's a mechanical problem - could be the software. I also remember the 3.6 having a problem with one of the heads and sluggish performance is one of the symptoms - can't remember if they had it fixed by MY13 though. If it's still under warranty, take it in.
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Old 11-08-2016, 08:56 AM
 
15,677 posts, read 20,170,578 times
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If under warranty, take it in.


It could be normal, as I remember my C300 had a painful delay when you'd floor the gas, to when the transmission would downshift and the car would actually go.
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Old 11-08-2016, 08:59 AM
 
Location: Sugarmill Woods , FL
6,234 posts, read 8,372,862 times
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My 2014 has great acceleration for a van, no lag at all. Maybe you can get the computer updated (flashed).
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Old 11-08-2016, 09:07 AM
 
Location: NYC
20,550 posts, read 17,485,544 times
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This sounds like an ECU timing problem that could be due to either changing weather or air filter being clogged which changes the fuel air measurement.

The simplest cure if this works is to yank the negative lead off the battery for 10 mins or so then put it back.

Afterwards your car's ECU will reset and drive it around for a few minutes normally for the ECU to sense and then load the right program.

I tune my cars with a programmable ECU and often when there's a delay in power then I know my program is off or needs a reset.
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Old 11-08-2016, 05:37 PM
 
Location: Metro Washington DC
15,394 posts, read 25,628,292 times
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Turn off ECON mode.
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Old 11-08-2016, 07:34 PM
 
Location: Eastern Washington
17,106 posts, read 56,712,890 times
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Quote:
Originally Posted by VTsnowbird View Post
2013 Grand Caravan. The acceleration seems sluggish, as in I want to go faster, I press on the accelerator, nothing happens for several seconds, then it ZOOMS forward (tach goes up).

3.6L V6 DOHC 24V
3600 cc

Would an engine cleaner additive help? Any suggestions? TIA
Did it always do this? Enough miles on it to maybe need plugs?

A cleaner like Techron might help if you have been driving a lot of short trips and the intake valves are dirty. If things are clean in there it won't help much.

Sounds like the van is hesitating before downshifting (AT I assume, were any of these ever built with stick shifts?)

Define "several seconds" - you mean like 1 or 2, or like 5 seconds (an eternity by hesitation standards) ?

The poster who said "turn off economy mode" may have a point.
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Old 11-08-2016, 08:31 PM
 
Location: Brawndo-Thirst-Mutilator-Nation
22,564 posts, read 24,353,783 times
Reputation: 20213
I have owned various 6-cylinder minivans......none of them are were that peppy. You usually have to hit the gas pretty good, and get the rpm up, to get some decent acceleration.

Last edited by tickyul; 11-08-2016 at 09:41 PM..
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Old 11-18-2016, 12:19 PM
 
Location: Metro Washington DC
15,394 posts, read 25,628,292 times
Reputation: 10394
I just had the PCM flashed on mine and now it shifts smoother.
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