Hello fellow Ls400 owners I just finished replacing my starter in my 95 Ls400 but now the idle is bouncy and the engine is not running smooth like before.

What would cause this?

I was thinking vacuum leak but i checked all the vacuum lines and they are fine.

I reused my throttle body gasket....maybe this??

 

Another thing.....can an exhaust leak prior to the O2 sensor cause this?

 

Blah blah blah where are the Lexus techs at????

 

calm down buddy, you arent going to get far being so inpatient.


sounds like a vacuum leak. check the lines for both leaks AND for being properly routed.

 

just sounds that way...im pretty patient and just glad it runs.

Now its the part of getting it to run right..

So the exhaust leak prior to the 02 sensor would have nothing to do with my bouncy idle??

 

its unlikely.

 

^ah damn....i think im just gonna go ahead and buy a throttle body gasket because i checked all my vac lines.

You think it could be anything electric??

Oh and thanks for replying.

 

it COULD be a host of things, but you have to start eliminating the most common issues first.

 

Have you cleaned the TB?

 

yea ima keep checkin

 

Is each injector on the car supposed to be for each cylinder?

Is it possible to have mixed up injectors?

 

the injectors wont be a problem, if you miswire them it will.
but its pretty hard to screw them up due to the cable length

 

Yea i thought it was unlikely that each injector would only be set per cylinder.

I went to My local Auto Zone and got a scan and it came up that 7 cylinders are misfiring.

So only cylinder number 8 is working properly.

I think i might just go to my Leuxs dealer and get a diagnostic

 

check your firing order, sounds like the plugs/wires are mixed up on the distributor.

 

^ Checked and there all were they are supposed to be.

The top ignition coil has a plug on the bottom with two wires.

Well that plugs plastic broke so I was left with only two wires not knowing which wire went into what side of the coil.

I think since they mixed up and i started the car it might off messed up something electrical.

What i did was triAL and error. I switched the wires until i saw which one ran better.

But maybe it messed something up on that initial start when the plug on the bottom of the ignition coil and the two wires were mixed up.

Oh yeah another thing is that now my steering wheel will only go up and down. It doesn't go in or out anymore. Checked fuses and nothing?