legacy603 Posted November 25, 2014 Share Posted November 25, 2014 I have a problem I have the ej25 I have done plugs and wires fuel treatment and still have a real bad hesitation on acceleration any tips would be helpful thanks in advance by the way the engine only has 131k and 31k on a rebuild with a 20thousands bore Quote Link to comment Share on other sites More sharing options...
TKFlight Posted November 25, 2014 Share Posted November 25, 2014 (edited) Plugs and wires, used NGK plugs with Subaru or NGK wires?Check the timing belt and see if it skipped a tooth Bad MAP/MAF/02?Getting any codes? Edited November 25, 2014 by TKFlight Quote Link to comment Share on other sites More sharing options...
legacy603 Posted November 25, 2014 Author Share Posted November 25, 2014 The plugs are NGK the wires are Subaru timing is all less the 50k and not one code or pending code I'm at a loss Quote Link to comment Share on other sites More sharing options...
1 Lucky Texan Posted November 25, 2014 Share Posted November 25, 2014 knock sensor IACV Quote Link to comment Share on other sites More sharing options...
legacy603 Posted November 25, 2014 Author Share Posted November 25, 2014 knock sensor even without a code? Quote Link to comment Share on other sites More sharing options...
1 Lucky Texan Posted November 25, 2014 Share Posted November 25, 2014 (edited) yeah, you're right, most people get a P0325 I think. I'd still Inspect it for cracks and make sure it's bolt isn't loose. cheap sensor too. Most folks report the inexpensive Ebay units work fine. here's a video - some voltage drop measurements are possible - start around the 5 minute mark I think. Engine Temp Sensor sometimes won't set a code. But usually folks have easy cold start with bad running when warm or, hard cold start with good running while warm. gummy IACV might also cause poor running at, and just off,-idle. kinda depends on the actual symptoms you experience. If the problem is at a certain throttle setting regardless of gear/speed - could be an intermittent spot on the TPS. Edited November 25, 2014 by 1 Lucky Texan Quote Link to comment Share on other sites More sharing options...
legacy603 Posted November 25, 2014 Author Share Posted November 25, 2014 I can't believe I didn't even think about the temp sensor I'm going to check that one out knock sensor seems fine and I cant get the video on my phone but thank you I'll post what I find Quote Link to comment Share on other sites More sharing options...
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