Question about 2004 Acura RSX

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First I noticed a drop in the idle ,so I turned it up a tad to get my rsx home. next I noticed the transmission was not shifting up when in traffic like 15 to 25 mph and now it just seems like the intake is blocked and is lacking power , I can floor it and it does not even downshift .

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When problems like this occur you need to have some testing done, there is no simple answer, this is a very complex electronically controlled engine and transmission, so when problems occur the very first thing you must have done is the system checked for fault codes and other basic checks like fuel pressure under load.
Here is what you need to do:
Get the OBD2 electronic engine control fault code test run with a scanner, both the memory test and the active engine running test, the dealer or a specialized shop are your best choice here unless you have a scanner that can read this data at home.
The next test is to have the fuel pressure tested, if it is lower than about 55 PSI there is a problem, the normal range is 55-62 PSI, if it is low first change the fuel filter and then retest the pressure, you will need a special fuel pressure test gauge kit, the test port is on the top of the engine in the pipe that supplies fuel to the injectors, looks like a tire fill valve. It would likely be cheaper to just have a shop run the tests of the OBD2 electronic engine control system and the fuel pressure test all at once, the cost will be about 1 hour labor time, labor rates vary widely by area and state so check locally for you best estimate. Personally I like the dealer, they know the car in and out and are always the best choice for quality service on this car line. Any Honda or Acura dealer can do the testing.

Posted on Mar 30, 2011


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