My 94 lexus es300 over heats after a few minutes of driving. ?

Question

we have put anti freeze and still it over heats within minutes of driving. im pretty sure its the thermostat. i know it needs to probably be replaced but i dont know however do i need to replace the gasket as well? also the speedometer lights dont work can i fix that myself? the dash lights up except for the speedometer (i think thats hwat its called the hands that go up and down when your driving and shows you how much gas you have) lol can you tell im a first time car owner =D

Answer 1

Hi there!  I'm no Lexus maintenance and repair expert, but I can tell you some common problems that will cause a car to overheat:

1. The thermostat (like you mentioned).  I don't know what it costs for a Lexus, but years ago, I had an '86 Ford T-Bird, and it cost me $10.  I'm sure it's way more for a Lexus, but replacing it is simple.  If your car is still under warranty, I recommend you have the dealer, or an accredited repair shop replace the thermostat.

2. The waterpump.  This is a much more complicated and costly animal.  If the warranty is still good, take it to the dealer.  Otherwise, consult your trusted neighborhood mechanic, as this is a day-long process to replace (in other words, big bucks).

3. The radiator.  It's possible you have a small hole/leak in it. If so, you'll need a new radiator.  For replacement, refer to Q#2.

Speedometer lights:

1. The bulb burnt out.  If so, you'll have to remove the dashboard and the front of your instrument panel to replace the bulb.  I did this on my T-bird, and it was an absolute *****, because the steering wheel was in my way.  It's worth the money to pay someone to do it for you.

2. There's a bad fuse.  I don't know about your Lexus, but in mine, the fuse box is located in the engine compartment, up against the firewall (furthest away from the grille).  If it's not there, check up under the dashboard on the driver's side.  Your owner's manual will tell you which fuse powers what, and replacing a fuse is inexpensive, simple, and something you can do yourself.

3. Hands go up and down: this could be an electrical issue, or it could be a broken spring.  Either way, you'll need a professional to take a look at, and fix it.

I hope I've helped you!

Answer 2

For the Thermostat that thing is is a pain to replace. You will need a gasket when you replace it . the other option is just to remove it. Now with the Neddels that is expensive yet ask your dealer or calll Merkado Tech. In Gilroy they do replacements for gage clusters for half of what the dealer will charge. GOOD luck ask for Eddie when you call and tell him where you got the info.  Say from Scott the A's fan

Answer 3

I am having that same problem. I have replaced the thermostat. That sisnt seem to help. Good luck!

Answer 4

Need more diagnostic information, repair history,symptoms,coolantleaks,

There is an hydraulic cooling fan for the radiator that is powered by the power steering pump. Is the fan turning and if so is it moving a large amount of air across the radiator when vehicle is overheating? There is a duty solenoid on the power steering pump that will increase fan speed as temperature rises, it is common for non LEXUS mechanics to leave this solenoid unplugged and will cause overheating while vehicle is at low speeds.

www.lextechautomotivellc.com