Search results

  1. S

    The Stupid Lift Questions Thread

    Do any of the 4" - 6" lift kits give you any extra suspension travel in the front over stock? or are the lift kits just for more ground clearance? wondering what kind of performance increase if any you get from these lift kits like the rough country.
  2. S

    1999 5.7 350 vortec P0304 cylinder 4 misfire

    You guys around here dont get enough credit for helping people out. I really appreciate the time yall have put into this and i hope this thread helps others out.
  3. S

    1999 5.7 350 vortec P0304 cylinder 4 misfire

    going up a long a grade with the engine trying to hold about 70mph at 30-40% throttle i am still getting Cylinder 4 misfires and cylinder 3 However as previously stated the cylinder 4 misfire counts are down significantly, previously under the above circumstance id log about 500-1000 misfires...
  4. S

    1999 5.7 350 vortec P0304 cylinder 4 misfire

    Good news update frens, the broken fan was the primary source of my rough idle. I replaced the fan with a new one like the picture above with the 11 blades and the engine no longer shakes like it did before. its not a smooth as brand new but it definitely doesn't move like it did before. kind...
  5. S

    1999 5.7 350 vortec P0304 cylinder 4 misfire

    its the second one with the plastic blades. I have no idea how long its been missing but i cant believe after all the work ive done to the truck in the last months i just now noticed it.
  6. S

    1999 5.7 350 vortec P0304 cylinder 4 misfire

    i flushed the coolant a few months ago, and did it again when i replaced the radiator and all the hoses. I will replace the water pump and clutch soon though. I am very curious if one missinng blade can cause the king of engine shake im feeling.
  7. S

    1999 5.7 350 vortec P0304 cylinder 4 misfire

    Update, replaced my radiator due to a leak and in the process noticed my radiator fan blade assembly has a broken blade missing. I think this is what's causing the engine vibration at idle. Going to replace asap and report back. Hopefully i didnt mess my bearings driving it like this for so long
  8. S

    Door Hinge Pins & Bushings, Cunningham Machine vs. New Greaseable GM?

    Just did this job over the course of last week, i initially bought pins and bushings from amazon but ended up buying the Cunningham ones after all. More expensive for sure but i didnt want to have to deal with this again. Make sure your door latch asssembly isnt messed up too before you put...
  9. S

    Factory stereo / head unit 1999 suburban. California

    I did it and I can’t remember but km praying that I used an adapter. I’m pretty sure I did
  10. S

    Factory stereo / head unit 1999 suburban. California

    How much would you want for it? I’m interested.
  11. S

    Factory stereo / head unit 1999 suburban. California

    Looking for factory stereo for my suburban. I don’t know what units fit in which years but I just want to put the factory one in and take the aftermarket one out. It can be cassette or cd I have no preference
  12. S

    1999 5.7 350 vortec P0304 cylinder 4 misfire

    im learning with these trucks if it aint actually broke dont fix it is the way to go
  13. S

    1999 5.7 350 vortec P0304 cylinder 4 misfire

    Been awhile since an update so i thought id let yall know i replaced the harmonic balancer, crankshaft pulley and the seal. The old harmonic balancer looked decent the rubber was intact and had some small cracks but nothing that popped out. Truck still idles the same. Best way to describe it is...
  14. S

    1999 5.7 350 vortec P0304 cylinder 4 misfire

    checked balancer at idle with belt off and pulley off seems fine. the rubber looks old but not separated I spent time really watching my scanner at idle and I was able to hammer down the misfiring cylinders at work this morning its 1,3,4 - 4 being the highest of counts truck definitely idles...
  15. S

    99 5.7 vortec crankshaft pulley wobble

    when i was recently removing a flathead screwdriver tip that was broken off into my clyinder, i was turning the engine clockwise and counter clockwise to fish out the piece. when i was turning clockwise it loosed the bolt on the crankshaft pully and i tightened it right away but only so much...
  16. S

    99 5.7 vortec crankshaft pulley wobble

    so my harmonic balancer is shot right?
  17. S

    1999 5.7 350 vortec P0304 cylinder 4 misfire

    alright, Looks like ill take another break from driving it for a little until i get that fixed. Ive been thinking about this rough idle a lot it just doesnt make sense to me, and im starting to wonder if it really is due to the random misfire. watching the live stream of ob2 data during idle i...
  18. S

    1999 5.7 350 vortec P0304 cylinder 4 misfire

    Video link Do you guys think this is too much wobble in my crankshaft pulley? im wondering if this making my engine shake at idle
  19. S

    99 5.7 vortec crankshaft pulley wobble

    Here is a video of my engine at idle The above link is a video of it. Seems like it’s wobbling pretty good I’m wondering if this is causing my engine shake at idle
  20. S

    1999 5.7 350 vortec P0304 cylinder 4 misfire

    No just checking everything I can think of. After driving it for a few days the biggest change so far is that the random slight misfire at idle seems to be intermittent. Sometimes sitting at a light I don’t feel it at all and other times after I park in a spot you can feel the misfires...
  21. S

    1999 5.7 350 vortec P0304 cylinder 4 misfire

    Got some readings of my o2 sensors at idle. Both bank one upstream sensors are new and seem normal but the downstream are still original and read slow but those don’t matter right ?
  22. S

    1997 Chevy Suburban K1500 P0420

    My main take away from this forum is that the 5.7 vortec is very sensitive on the ignition side of things. Having myself come from owning gmt800s and toyotas my whole life i didnt buy into the "only buy oem or better quality" for the ignition components. But having gone through 1 dizzy, and 5...
  23. S

    1999 5.7 350 vortec P0304 cylinder 4 misfire

    I received the blue cap and rotor and the new distributor hold down clamp, the more open one that allows for greater adjustment as opposed to the new style which you cannot rotate. I got my cam retard to 0.2-0.8 and truck runs as good as ever. The slight random misfire is still there at idle but...
  24. S

    1999 5.7 350 vortec P0304 cylinder 4 misfire

    My deep dive on this subject yielded this as the best solution. I went to a local hydraulic shop and got a 4" OD 1/8" thick rubber O-ring thats rated for higher temperatures they were like 2$ each or something. the 1/8 thickness is key i tried 3/16" and it was too thick for my liking you would...
  25. S

    1999 5.7 350 vortec P0304 cylinder 4 misfire

    My plan of action for right now is to put the new cap and rotor on the blue one and then also get the cam retard as close to zero as i can. I ordered a new dizzy hold down clamp thats like the OEM one and allows for minor adjustment. the one that came with my dizzy locks it into place and its...

Latest posts

Staff online

Members online

Total: 1,149 (members: 42, guests: 1,107)

Forum statistics

Threads
64,534
Messages
1,396,091
Members
51,935
Latest member
jeremy99

Share this page

Top