jrsluis Posted August 21, 2012 Share Posted August 21, 2012 So im new on here obviously, so greetings. Here is what I have going on. I have a classic mini, with an engine swap of a D15B VTEC engine. I was having some issues with high idle, but they where not terrible. I was driving on the highway and a noticeable loss of power occurred, all at once. I then limped her home. The engine boggs down when gas is applied and it seems to be running rich. I cleaned the Idle air control valve, as suggested by a different forum. This brought down the idle (from around 5-6000 Rpm!!) to normal. Now to sort out the issue of acceleration cutting power. If this helps there is a video of the engine not having it on acceleration. I thought it may be a coded or ECU issue but i would like to rule out mechanical prior to committing to tuning. thanks josh Link to comment Share on other sites More sharing options...
jrsluis Posted August 21, 2012 Author Share Posted August 21, 2012 also the video may be processing on youtube still so give it a few. Link to comment Share on other sites More sharing options...
97CIVICHATCHDX Posted August 22, 2012 Share Posted August 22, 2012 I have a jdm d15b vtec in my 97 hatch. I think I was having a similar problem with a lack of acceleration going up hills or being somewhat sluggish start in first gear. Also pedal felt a little loose. So i changed my throttle cable and now I have the response that I was missing out on. Not sure if this is the same problem as to what your having. But I changed my cable for 18 bucks and maybe 15 - 20 mins of install since being first time changing one. Hope this helps at all. Link to comment Share on other sites More sharing options...
jrsluis Posted August 22, 2012 Author Share Posted August 22, 2012 throttle cable is new... problems even when acceleration/ opening throttle plate, in engine Link to comment Share on other sites More sharing options...
Xeryon Posted August 22, 2012 Share Posted August 22, 2012 Does it otherwise idle fine? Loss of power over idle is often linked to obstructed exhaust systems (i.e. bad catalytic convertor) or damaged O2 sensors. Since you are running a hybrid vehicle I don't know how much of the civic systems you have in place so it's a bit tough to troubleshoot. Link to comment Share on other sites More sharing options...
jrsluis Posted August 23, 2012 Author Share Posted August 23, 2012 Yes it idles fine otherwise The overly high idling, was corrected when i cleaned the IACV. Link to comment Share on other sites More sharing options...
jrsluis Posted August 23, 2012 Author Share Posted August 23, 2012 Also sorry, it does not have a catalytic converter. And obviously has been re chipped. Also sorry, it does not have a catalytic converter. And obviously has been re chipped. Link to comment Share on other sites More sharing options...
Xeryon Posted August 24, 2012 Share Posted August 24, 2012 Well, next steps involve checking timing and distributor. The rubber timing belt can skip a tooth and distributors are prone to attrition faster then any other part of the engine. Is you modified ECU delete the need for O2 sensors? a bad sensor can cause somewhat similar symptoms. Link to comment Share on other sites More sharing options...
jrsluis Posted August 24, 2012 Author Share Posted August 24, 2012 Timing belt could make sense, I heard a screeching like nose when driving that was new, maybe the off belt rubbing. Also I believe the chip has o2 sensor deleted. Not 100% on it though. Link to comment Share on other sites More sharing options...
Xeryon Posted August 27, 2012 Share Posted August 27, 2012 I am guessing your ECU and engine are of the OBD1 variety as that would make for a much less complicated swap. By default OBD1 engines require input from one oxygen sensor before the catalytic convertor. As noted: your ECU might have been reprogrammed to ignore that input or to spoof the signal. Or this problem has nothing to do with the O2 sensor and it doesn't matter anyway. Screeching could be the distributor bearings. Pull the cap and see if it isn't filled with metal shavings and dust. Link to comment Share on other sites More sharing options...
Draytech Performance Posted August 31, 2012 Share Posted August 31, 2012 check throttle body gaskit or change the throttle body .the gaskit has to match the port on the throttle body Link to comment Share on other sites More sharing options...
jrsluis Posted September 3, 2012 Author Share Posted September 3, 2012 I was out of ideas/ patience, i brought to my local tuner $187 later problem solved. It was some air intake sensor failure making the engine think it was running cold so it kicked up the rpms to give it some warmth or something. weird. It was much cheaper than i had thought it would be, Thanks for all the input guys. Link to comment Share on other sites More sharing options...
jrsluis Posted September 3, 2012 Author Share Posted September 3, 2012 oh and the messed up running was sorted from unplugging battery and "resetting" the ECU. but the Idle went back up .. Link to comment Share on other sites More sharing options...
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