I have a 1991 lexus ls 400,I recently replaced the starter and now it wont start, some people not experts on import cars say it's not firing, what could be yhe problem?

On Lexus ls 400 the starter is located underneath the manifold of intake. The intake manifold has to be removed to replace the starter.The intake manifold located on the top, left side of the engine from the front, along with the hoses, wires and tubes connected to the manifold.Mark each connections before disconnecting.This will help you while reconnecting.The starter is fitted by bolts.Remove the bolts and detach electrical cables on starter.Remove starter from engine compartment.Then re-fit the new starter in reverse as you removed the old starter.Its not very easy job.You will require proper tools to do this.This will help.Thanks.Helpmech.

you will need to pull off the upper plenium and the lower intake manifold the stsrter is below and to the rear of the engine. you will need to remove the fuel rail and the injectors.

You'll need to remove the intake manifold. The starter is located underneath it.

Good luck (remember rated this help).

YOUR STARTER IS LIKE THE CADILLAC DEVILLES.YOU HAVE TO REMOVE THE INTAKE AIR CHAMBER AND THE INTAKE MANIFOLD ASSEMBLIES.IN OTHER WORDS YOUR STARTER IS UNDER THE INTAKE.

Under the intake manifold, Big job suggest take it to a shop.

Not too bad. Not much room, just enough to drop the starter. It is probably easier to go up through exhaust if you can get your exhaust shield off the manifold .

have you checked all the grounds and did you replace the starter?

that would be the starter gone bad .needs to be replaced,it is a real job the first time around.

Let engine cool down, remove battery terminals (negative first, then positve), remove starter. Install starter, install battery terminals (positive first, then negative), start and check for proper operation (no grinding noise or squeling).