opda

  1. O

    No PCM communication on 4.0

    so long story short, went to replace throttle cable then went to start and test out, didn't realize cable was too short and started it up with intake slightly open heard a loud click/clank, got cam/crank sensors not synched, pulled opda and replaced just to be sure, did tdc and all, now got a...
  2. CuzzoLJ

    05-06 stuck OPDA and maybe PCM issues?

    Hey yall! This is my first post so any advise on a better post would be great! I’ve been roaming this forum since I’ve bought the jeep and it’s been great so I decided to make an account! Anyways, I bought a 05 lj a few months back and it has been a great experience so far. Just until I ran...
  3. Alex05

    Where are people buying replacement OPDAs?

    My OPDA just started sounding like monkeys; It's time to replace it. I've taken a look at Quadratec, and the Amazon link found in the pinned OPDA post in this forum, and it seems like there is a sharp increase in complaints regarding quality starting in 2021 on the Quadratec OPDA product page...
  4. C

    OPDA or lifter tick?

    So a while ago I was having the random misfires and then a p0016 code and found out 05-06’s had opda problems. I replaced the opda with a crown unit and all had been good but I’ve been hearing the ticking noise mostly at idle and then when the engine warms up, it goes away. When I was trying to...
  5. Mitch8801

    My Jeep started making a terrible whistling noise

    Hey guys So I just got back from a month long trip and drove my tj for around 30 minutes, started it back up and it made a terrible whistling/whining echo noise at idle. It would go away every time I gave it some throttle. ive heard about the OPDA issues in the 04-06, but I have a 02 so I’m a...
  6. mgroeger

    Could the OPDA be the source of my oil leak?

    Background... 2004 LJ 4.0L automatic Just put a new ATK engine in the Jeep and there is a significant leak at the OPDA/Cam shaft positioning sensor. My first assumption was the thin paper gasket wasn't doing it's job so I bought the Mopar one which clearly was a better gasket. I took the top...
  7. BuildBreakRepeat

    OPDA Scream

    Afternoon everyone. My tj has developed a problem recently where the belt will screech and scream extremely loud for the first 10 min after startup. I’ve read and researched everything about belt noise, and so replaced my tensioner pulley, belt, and idler pulley. The noise got a tiny bit better...
  8. B

    OPDA won't rotate enough to be removed

    I'm trying to pull my OPDA out to install the new Crown model. I've achieved TDC, have held it in place with the pin from the new OPDA, but when I try to lift the OPDA out, it rotates counter clockwise, and impacts the engine, preventing it from being fully extracted. I don't understand why it...
  9. Andrew B

    Persistent CPS Codes (P0340, P0344, P0016)

    Have been going rounds with my 05 w/4.0L. Started getting cam/crank correlation codes (p0340, P0344, P0016 etc) I’ve replaced both sensors, timing set, and realigned the OPDA, reset the computer and thought everything was good. This morning leaving for work, was hard starting and still throwing...
  10. Brett Piles

    P0334 and P0016 after OPDA install

    So the other day my jeep starting doing the "laughing monkey" noise. I found out it was the OPDA .I never done it before but because I'm a broke college student I do most of my work myself. Anyway, I watched multiple videos on YouTube on how to install a new one. I installed it just like in the...
  11. P

    New OPDA is not working

    I understand that this is a fairly old problem people have had with their OPDA's but I have not found any discussions or threads online where people are experiencing the same problem as I am. I own an 06 TJ, for the past few months the engine light has been on, when I looked up the code the most...
  12. Chris

    Crown OPDA (Oil Pump Drive Assembly) - BRAND NEW!

    This is a brand new, never used Crown OPDA (Oil Pump Drive Assembly) for a 97-06 Jeep Wrangler TJ / LJ. I was planing on putting this in my 05 Wrangler Rubicon so that I wouldn't have to worry about the dreaded OPDA issue, however, I found out the previous owner already replaced the OPDA so it...
  13. Chris

    How to change your OPDA

    One of the most common issues with the 4.0 engine in the later model Wrangler TJs is the OPDA (oil pump drive assembly). The factory OPDA is designed with two oil impregnated bronze bushings separated by an oil seal. The upper bushing is cut off from lubrication by that seal, resulting in...