PelvaanAli

Hello Everybody (Dr Nick voice from the Simpsons)

i picked up a 1995 LS400 and am having the following issues:

1. the heat will not work until the car is driving (above 2 rpm)
2. Car has a really bad misfire Codes (P0307,P0300, P0302, P0161)
3. I cannot seem to find a locksmith who will cut a key for me. I live in Nassau County, NY.
   1. also having difficulty programming a key fob I picked up

Rather than paying a mechanic, I figured I'd ask here what is the best way to approach the following problems.

Your help is greatly appreciated, Thank you
-Ali

RA40

iTrader: (6)

Welcome to Club Lexus Ali.

That is a good sign you have error codes. When/how long have the plugs and ignition wires been in there?

PandaGS300

Sounds like you should just do a basic tune up and take it from there.....

Scraape

replace spark plugs, clear codes, drive until all ECU tests are completed, then report back

PelvaanAli

a month later. I did the tune up and the car idles quite nicely :-)

sitll a check engine light, due to o2 sensor. I'm loving this V8

billydpowe

iTrader: (1)

replace the sensor... and their easy to love...

Losiracer2

Replace the coolant temperature sensor as well if there is no record of replacement. It'll help your fuel economy a little bit and might also improve your heating issues. The one on my 97 literally crumbled as I unplugged the connector. So just due to age alone, it warrants replacement. O'Reilly auto has it for a reasonable price, $17 (lifetime warranty) or you can buy Lexus OE for I think $38.

But most likely, its due to improperly bleeding the cooling system, which is pretty easy to do on these cars as air pockets can develop. If it still won't bleed, or you don't have enough pressure in the upper radiator hose, then your radiator cap might be faulty and not pressurizing the system as designed. One member noticed an increase in heat after he replaced his cap.

PelvaanAli

problem was fixed....maybe not correctly but this is what the mechanic did;

He took his air compressor hose and left the radiator cap open and shot air through the anti freeze line by the firewall. While he was at that, i had him replace the thermostat and the gasket as well. the heat works like a charm now.

PelvaanAli

so the code reads, BANK 2 SENSOR 2

I know downstream....but Bank 2? is that passenger or driver side?


Also, what do you guys recommend for Transmission service? Car is at 147k now and I don't have any record of any service being done. I do notice that it shifts a little funky between first and second gear and it doesnt feel strong as it did after the tune up.

and of course, the UPPER control arm on the passenger side went out. I am replacing the Upper on both Driver/Passenger side with MOOG parts.

RA40

iTrader: (6)

Passenger side post cat sensor.

Good results from doing the ATF incremental drain. Drain out the approx 2.5 quarts and replace. Do this routine every oil change or if the fluid is really bad once a week driving the car a couple hundred miles to circulate the fluids before repeating the routine.

PelvaanAli

now BANK 1 Sensor 2 went out!! AHHHHH

but let me just say....replacing both upper control arms...the car drives like a charm!!!

-ok so here is another dilemma i have, I thought I had an exhaust leak but according to the dude at the muffler shop, the "oxygen pipe" from the headers is busted and needs to be replaced.
-he also spotted a leak by the driver side boot next to the rack & pinion - the rack had markings from a junk yard so it was replaced, doesnt necessarily mean it is a good part.

PelvaanAli

I have a new code P0336. How bad? how expensive? Any input is greatly appreciated

billydpowe

iTrader: (1)

there is nothing wrong with YOU looking up some of the codes.
I found this:

• OBD-II Trouble Code Chart CLICK ON THIS
• ›
• P0336 - OBD-II Trouble Code

P0336 - OBD-II Trouble Code


Our automotive experts have put together the following information about the P0336 diagnostic trouble code. We've provided the common symptoms that occur when this code is set along with the frequent repairs that address the issues related to the P0336 code.OBD II Fault Code

• OBD II P0336

Fault Code Definition

• Crankshaft Position Sensor "A" Circuit Range/Performance

What does this mean?

The Distributor/Crankshaft Position Sensor measures the exact rotational speed and position of the crankshaft. This provides a critical data signal used by the Powertrain Control Module (PCM) to control Ignition Spark Timing and Fuel Delivery. When this signal is interrupted for any reason, code P0336 is set and the MIL or Check Engine Light is illuminated.



Symptoms

• Check Engine Light will illuminate
• Hard starting/cranking without starting
• Engine hesitation or stalling
• Engine dies and will not re-start
• In many cases, no abnormal symptoms may be noticed

Common Problems That Trigger the P0336 Code

• Defective Crankshaft Position Sensor
• Faulty or corroded Crankshaft Position Sensor wiring or connections
• Defective Camshaft Position Sensor
• Rough running/misfiring Engine

Common Misdiagnoses

• Crankshaft Position Sensor is replaced when the cause is a defective Camshaft Position Sensor
• Crankshaft Position Sensor is replaced when the cause is a poor connection or chafed wiring
• Crankshaft Position Sensor is replaced when the cause is a misfiring engine

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