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  1. Airjunky

    Replaced a cracked header & now it backfires

    So the fuel pressure gauge from O'reilly's proved to be inaccurate. I have around 49 psi of fuel pressure. At that point I figured it was time to remove the intake and exhaust that I had installed and started this mess. I'm pretty good at it by now so I had it done pretty quickly. And found...
  2. Airjunky

    Replaced a cracked header & now it backfires

    Went to O'reilly's today & borrowed their fuel pressure gauge. I did it twice, and it showed I had no fuel pressure..... zero. Even when I pushed the pin on the Schrader valve, I just got a few little drips out. I don't get how, if I really have no fuel pressure, that the damn thing runs at...
  3. Airjunky

    Replaced a cracked header & now it backfires

    A buddy of mine suggested maybe a valve bent recently. The backfiring would be compression coming through.
  4. Airjunky

    Replaced a cracked header & now it backfires

    Yea, I'm stumped too. I get that it might be a timing issue, and timing is adjusted by the ECU based on the sensors input. I've also read that backfiring thru the intake is a lean fuel condition. All I can think is to take it apart again. But what would I be looking for?
  5. Airjunky

    Replaced a cracked header & now it backfires

    Pulled the IAC and cleaned it with some brake cleaner. It really wasn't bad, not a ton of carbon. Although it was made in Mexico so maybe it was replaced with a cheapie at some point. I haven't seen a CEL since before the job. And I don't think it's ever stalled. The idle is down 100 or so RPMs...
  6. Airjunky

    Replaced a cracked header & now it backfires

    It's not an exhaust leak. I ran my hand all around the exhaust and intake manifold at the head and am not feeling anything. I had a buddy come over and look at it. It's very clearly coming from the intake tube....the air cleaner. Swapped out the crank position sensor and there was no change.
  7. Airjunky

    Replaced a cracked header & now it backfires

    Found several threads mentioning the crankshaft position sensor and various misfire, backfire, non-start issues. This one in particular Looking for NTK part #s now
  8. Airjunky

    Replaced a cracked header & now it backfires

    Thanks for the input Rubicon88. But this engine only has 10k miles on it. It ran great Saturday morning, all day Friday and Thursday after I did the work. I thought about ignition problems, but with no distributor, what can I do? The coil rail is in good physical condition. Wiring harness looks...
  9. Airjunky

    Replaced a cracked header & now it backfires

    2002. So no distributor, has a coil rail and no spark plugs wires, cam sensor etc
  10. Airjunky

    Replaced a cracked header & now it backfires

    Yep. I bought NTKs I thought I was resetting the ECU by just pulling the negative. Guess I'll try this method instead. Thanks
  11. Airjunky

    Replaced a cracked header & now it backfires

    So can you tell me what it was that he did? I removed the EFI, intake manifold and the header. I installed a new Felpro gasket & new O2 sensors in stock used exhaust manifolds (the 2 pc). I tried to be really careful getting the exhaust and intake manifolds in place and properly aligned. I read...
  12. Airjunky

    Replaced a cracked header & now it backfires

    I recently replaced a cracked exhaust header with the stock 2 pc exhaust manifolds. This involves removing the EFI, intake manifold, exhaust, unplugging all the O2 sensors and swapping 2 O2 sensors from the old header to the manifolds. After installing the manifolds I drove the Jeep about a...
  13. Airjunky

    LS engine swap options?

    Hey guys, Digging up an old thread. I'm considering an LS swap in the TJ, specifically a 4.8 or 5.3, and am curious about cams for low / mid range torque. I've talked to a couple guys who have done the swap and having all the power at 4400-5500 RPMs is a little less than ideal. I'm thinking to...
  14. Airjunky

    Mobile home internet for $50 a month?

    I have a 30 mbps Centurylink fiber connection & use 3 Rokus, 3 PCs & multiple phones & tablets with hardly any buffering at all. The issue is not the speed, but the latency. Fiber has almost none. Whereas cable, cellular, microwave & satellite can have a ton. I've used the Starlink service a...
  15. Airjunky

    The beginning of the end for the Cherokee nameplate

    Next thing you know white people won't be allowed to own black cars.
  16. Airjunky

    Anyone else having trouble with checkout at Savvy Offroad?

    Hey Jeremy, long time, no see. Had an issue coming down RedCloud creek a few weeks ago. Dented the hell out of the oil pan. Luckily it didn't puncture it! So I replaced the oil pan and put a skid plate under it.
  17. Airjunky

    Can you DIY repair / straighten a bent fender?

    You sure? On a 2 yr old thread?
  18. Airjunky

    Anyone else having trouble with checkout at Savvy Offroad?

    I used their site recently too. And got the eternally spinning circle too. The issue was the form defaulted to check the "shipping address" option as if my billing and shipping addresses were different. I unchecked that and it processed fine. Then got an email from them the following day that...
  19. Airjunky

    Banking on Bitcoin

    For Bitcoin & other crypto look into Coinbase. Robinhood usually works for stocks & Bitcoin. Doesn't appear they get into other crypto though. Side note: I found this bitcoin return calculator recently. I sold a house almost exactly one year ago. Ended up with about $10k cash after it was all...