Jacksntheripper
New Member
I am at a loss here.. I have a 92 DA with B20 swap.. I am having power loss issues so I will try and give as much info as possible as to the situation. I bought this car a few months back and have been fixing the chicken sh't work on this car. The issue is continually getting worse, started as a loss of power, "bog" under holding speed. Doesn't matter what gear or what RPM.. Holding speed in gear runs great until car heats up then it'll start to sputter and lose power .. Drives fine for 3-4 sec, then bogs down "dying" until letting off the gas then back on and starts all over again. If instead of letting off I punch it, it'll pick up and haul ass. Now the strange part, car drove great but the header had a straight through crack, due to the header being welded to the exhaust pipe back to the short can Muffler (no cat, yes resonator) To fix the header a full exhaust replacement was necessary. Replaced the eBay header 4-2-1 with a DC Ceramic 4-2-1 header. A bolt in cat convert (tried bolt in test pipe too so it's not the cat) bolt on skunk 2 cat back. The INSTANT I drove after exhaust change the issue started.
Here is what I have tried so far, replaced 02 sensor, cap and rotor, plugs and wires, negative coil, checked and adjusted fuel pressure (was at 52psi now at 39) replaced the coil wires cap and rotor again but with MSD, inspected and cleaned fuel injectors, replaced pr4 ecu, tried a different p75 ecu, changed PCV valve.. Only thing missing that I can see is a breather box that the PCV hose goes to (currently goes from manifold to valve then nothing) but it was alway like that. Took it to a shop because it will throw a code RARELY code 43 BUT when check engine light on car runs perfectly.. Shop said code is Basically air fuel issue..
NOW in the last 2 days, issue happens all the time.. Used to only be under constant load in gear now it's constant load at all.. Neutral or not.. No has rough idle to almost stall but doesn't (not the rhythmic up and down of a bad TPS sensor either)
Sorry for the long post but I wanted all the info out and I have exhausted all things I can think of.. You guys are smarter than I please help!!!!
Here is what I have tried so far, replaced 02 sensor, cap and rotor, plugs and wires, negative coil, checked and adjusted fuel pressure (was at 52psi now at 39) replaced the coil wires cap and rotor again but with MSD, inspected and cleaned fuel injectors, replaced pr4 ecu, tried a different p75 ecu, changed PCV valve.. Only thing missing that I can see is a breather box that the PCV hose goes to (currently goes from manifold to valve then nothing) but it was alway like that. Took it to a shop because it will throw a code RARELY code 43 BUT when check engine light on car runs perfectly.. Shop said code is Basically air fuel issue..
NOW in the last 2 days, issue happens all the time.. Used to only be under constant load in gear now it's constant load at all.. Neutral or not.. No has rough idle to almost stall but doesn't (not the rhythmic up and down of a bad TPS sensor either)
Sorry for the long post but I wanted all the info out and I have exhausted all things I can think of.. You guys are smarter than I please help!!!!