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My 1993 Honda prelude Si Has been having a drop in RPMs Every now and than when I start my car, than on top of that after a few minutes of driving time the check engine light comes on. NOTE: I've replaced all spark plugs I've replaced battery Would there be any other reason of cause?

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  • 7 Answers

You may have gotten air in the fuel tank when you filled it. Be sure when you tighten gas cap to hear at least 3-4 klicks.

Posted on Jul 20, 2013

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Posted on Jan 02, 2017

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SOURCE: 1993 honda prelude si dash lights

my 93 prelude was doing the exact same thing and for me it was my alternator was working properly.
go to a parts store and have them test it.

Posted on Aug 07, 2008

  • 2 Answers

SOURCE: check engine light comes on and car idle's and

I found this; if it helps.
The injectors need to be cleaned, if an engine is experiencing any of the classic symptoms of dirty injectors, such as lean misfire, rough idle, hesitation and stumbling on light acceleration, a loss of power, and higher hydrocarbon (HC) and carbon monoxide (CO) emissions.
Lean misfire may also trigger a misfire code and turn on the Check Engine light on 1996 and newer vehicles with OBD II systems. The code often will be a P0300 random misfire code, or you may find one or more misfire codes for individual cylinders, depending on which injectors are most affected.

the web page was:
http://www.aa1car.com/library/2003/ic30336.htm

Hope this helps

Posted on Apr 19, 2009

  • 56 Answers

SOURCE: 1992 prelude si - battery/alternator prob?

if you can charge the battery and drive it for a while then sounds like the altenator has failed and is not re-charging the battery, good way to test is to charge the battery, start the car and turn the light on, if everything is dimm or the motor dies there is little to no charge voltage, and will require altenator work

Posted on Jul 01, 2009

  • 8 Answers

SOURCE: 1993 honda prelude si, h23, with jdm vtec .

i have the same car as u do, and something lie this happened to me. check ur spark plug wires, and ur distributor cap.. check the coil itslef too. This happened to me because my spark plug wires werent sealing tight enough, and there was some "moisture" going on in there.
theres also the possiblility of the alternator being bad.. try turning ur car on with another battery, and once its on, unplug the battery.. with the car on. if the car just dies.. its gotta b the alternator

Posted on Jul 13, 2009

  • 1 Answer

SOURCE: car starts but shuts off

Replace the crank sensor. This happen to me

Posted on Sep 16, 2009

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my 93 prelude was doing the exact same thing and for me it was my alternator was working properly.
go to a parts store and have them test it.

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