xtreme velocity
Member
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- 2003.5 Mazdaspeed Protege
Ok so ill start from the begining. When i first got the car ran great after tune up! Got 30-34 mpg, loved it! Couple of months went by and I decided to buy a sri. Bought a somito (something like that) stock intake size, and after about 2 days of driving I got a cel of running lean, couldnt figure it out. So I took the sri off and car was fine after that. So i figured I have a vaccum leak that was small prolly. I did find one, fixed it and ran it for a couple days. Now the car stumbles at idle. Checked everything I could and coundnt find anything so i took it to another shop that has a snapon scanner that I dont have, Bank 1 Sensor 1 was only reading .01-.02 volts at idle, and volts did not increase much under throttle. So MAYBE its a bad O2 from running lean so long. Replaced O2 and put stock intake back on, reset ecu again. Nothing! now its stumbles at idle and cuts out really bad under light or heavy throttle. Im starting to lean towards the fuel pump/filter. But I figured I would ask here real fast. This is really getting under my skin, I miss my car and just want to drive him! Summer time is coming and I wanna drive my car! Any help is awesome! Im going to try and get fuel pressure checked before replacing the fuel pump/filter. Oh and I have not got another cel back on since fixing the leak. So I have no clue which way to go.