Weird Shudder LS1

[NVE_069]

Just wanting to know what could cause my LS1 too shudder when stoped and in drive or any gear for that matter. It dont effect the revs or anything but feels like a stall is gunna happen then its fine untill next time. It dont do it all the time sometimes more then others. Its hard to explain but sorta like a miss but its fine when driving. The other week the car backfired when I gave it alittle so i changed the plugs and thats fixed that problem but yeh now have this.

Ummm a mate said its more then likly a sensor but yeh WHICH one lol I know its not the o2's as there pretty new. What other sensors can cause its to not run soo well. The car does have 250,000k's but yeah. Trying to figure out whats going on b4 I rebuild it soon as I dont wonna rebuild it and its still doing it lol.

Cheers.

[mrvx2]

Sounds exactly the same as mine. Revs are fine but shuddering and/or mising. Ive been told it could be O2 sensor, but if u just changed urs im not sure. I havent changed mine yet, but i ve heard others doing it and gets rid of the problem. Hope someone can clear it up

CHeers Frank

[danja]

Engine mounts?

[NVE_069]

Yeah possably I guess. Its done it a few times while in park or Nutral. So yeah.

[burnz]

Just wanting to know what could cause my LS1 too shudder when stoped and in drive or any gear for that matter. It dont effect the revs or anything but feels like a stall is gunna happen then its fine untill next time. It dont do it all the time sometimes more then others. Its hard to explain but sorta like a miss but its fine when driving. The other week the car backfired when I gave it alittle so i changed the plugs and thats fixed that problem but yeh now have this.

Ummm a mate said its more then likly a sensor but yeh WHICH one lol I know its not the o2's as there pretty new. What other sensors can cause its to not run soo well. The car does have 250,000k's but yeah. Trying to figure out whats going on b4 I rebuild it soon as I dont wonna rebuild it and its still doing it lol.

Cheers.

check your coil on plug's for hairline crack's.
they cause the engine to stumble at idle.

[NVE_069]

Ah thanks will have a look. Dunno when they were last done either maybe never.

[dannyn12]

i had the same issues changed both oxygen sensor never happen again

[Tsunamix]

Vaccum leak ?

[NVE_069]

Might have a look lol. stalled today the misses said. so its got me buggerd

[VZ SS :D]

same thing with my gen III I think. just when ur stopped in drive with foot on brake and it sorta vibrates and shakes sorta thing??

[NVE_069]

Yup thats what she does. Im pretty sure it isnt the engine but a sensor pharaps. altho i changed both o2 sensors an plug it still does it. When I boot it also she backfires an pisses and farts around.

[vtclubby195i]

get it the error codes checked that will tell u whats wrong with it

[NVE_069]

Would be the easyest way I guess. LOL saven buyn things and its not them LOL

[NVE_069]

Edit.................................

[NVE_069]

Holden want $140 too find out what the problem is and thats just for the 1st HR then what ever after that. They can go jam it fair up there arses is pretty much what I told em. I know how it works and it wont take even 1 hr too tell me whats wrong by pluging a Dignostic tool into it.

I said what it dont even take an hr too pull the coed out and she said oh oh I'll have to make sure I'll go ask some1, I said nah cya

[Not_An_Abba_Fan]

When it is idling, pull each lead off and see which one doesn't make a difference. Sounds like a failed plug.

[kovini]

.... you already changed the plugs, as previously noted, but have you tested your leads?
at the least, run a multimeter over them, and check the resistance - the longer they are the higher the resistance obviously, actual specs. will be in your workshop manual. also try gently flexing (not tying in knots) the lead as you check it as well.

..always check the cheap things before replacing the expensive things!

[GMMAD]

leads?...........

[383VXSS]

O2 sensors i reckon,get the Bosch ones they r better than what holden uses(AC DELCO)I had mine replaced with acs' and didnt last too long swapped to the bosch ones and all good.
repco workshop here charges 70 for a scan,do you have a repco or similar neer by,Holden r always expensive IMO.

[NVE_069]

Changed the leads to 9mm an lol its fine now. I feel like a idot coz i should have changed them long ago

[383VXSS]

What sort did ya get mate I wanna do my leads/plugs soon
cheers

[NVE_069]

Got my mates 9mm ones atm too make sure it is them which it seems to be soo I'll be getting him to order them for me. Discount price