What causes lexusis2000 to shudder while crawling in traffick jambelow10mph over 10mph car drives perfect

jack up the car and check each wheel to see if the the breaks binding

Most likely the clutches are worn out. Yes it is a rebuild transmission.

If this is a XK8 jaguar then its not that complicated for this year ,firstly check the fuel pressure manualy with a gauge in case the pressure is low ,as for a shudder from your description then iam sorry i would need a drive to know whats wrong or at least to get a feel of whats happening

Have the crank position sensor checked. This sounds very familiar.

Sorry Ann,
Your description of the problem is pretty vague. There are lots of things that can cause a "shudder". It could be anything from bad tires, to faulty suspension parts, to damged CV joints to severely warped or cracked brake rotors (or several other possible causes). Your best bet would be to have a trained technician drive your car and/or give it a thorough inspection to determine the cause.

Hi your car got a speed warning system in the dash you need to reset it,check on your steering wheel or wiper and inticator levers for buttons for dash menu some models have a reset button also.hope this helps.

I have a 97' Silverado 5.7 with a K

if it has overdrive transmission the torque convertor has a vein broke inside causing shudder replace torque convertor.
the torque conver does the overdrive when it hits a certain rpm it upshifts to overdrive in torque convertor.
with vein broke it hrows it out of balance causing it to shudder and possibly slip.

change the wires mate they wore out try that first save ya some money on other stuff

It sounds like a plug got disconnected during the headlight change.