Question about 2001 Dodge Grand Caravan
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Posted on Jan 02, 2017
SOURCE: ROUGH IDLE / ENGINE SURGE
Check for vacum leaks on hose going from the intake to the brake booster. Also check the dodge.com website. Click on the for users button. Enter in last eight digits of vin and see if pcm (computer) needs a update, or if there is any other open recalls on the van.
Posted on Jul 21, 2008
those sensors could cause the issue, clean the MAF 1st, also clean the idle system using the following procedure, the IAC can cause cruise surge. I use this to cure these problems all the time.
Here is the most common cause of surges and stalls and low idle, it is the idle speed control air-bypass valve (IAC) and throttle valve, they get full of gunk over the miles and cause idle issues (stalls, low idle) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.
Posted on Jan 13, 2009
SOURCE: S80 engine surge at idle
Most likely the surging is due to a contaminated electronic throttle module (etm). If it is the throttle module Volvo has a 10 year 200,000 mile extended warranty that could cover the problem.
There is also the chance that there is a vacuum line loose and/or leaking. I would take it to the dealer and for a nominal fee they can diagnose the problem.
Posted on Aug 16, 2009
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Miles? Have you replaced ignition coils recently? Pretty good chance that they could be going bad. I would start by swapping all 8 coils and plugs and probably changing the valve cover gasket as well as those are known to go bad in the 2000-2003 LS
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