The Check Engine Light may illuminate because a component of the oxygen sensor stops working. As a result the engine computer is unable to determine the proper ratio of air to fuel for the engine. Replacing the failed oxygen sensor should correct this concern.
Resources for the Repair and Maintenance of your 1993 Lexus ES300
1993 Lexus ES300
1993 Lexus ES300 Problems
On higher mileage vehicles, an engine misfire may develop and/or the Check Engine Light may illuminate due to a failed ignition coil. It is not uncommon to replace all the coils when the first one fails in order to prevent return trips to the repair shop.
Sludge can build up in the engine because Lexus did not recommend frequent enough oil changes. Lexus will sometimes offer a discount on cleaning the engine if necessary. Owners who changed their oil every 3,000 miles did not experience these problems. This sludge build up can lead to excessive oil consumption.
Intermittent failure of a purge control valve in the evaporative emission system can cause the Check Engine Light to illuminate. A failed valve should be replaced to correct this problem.
The Check Engine Light may illuminate because the mass air flow sensor sends incorrect information to the engine control computer. This can cause a loss of power on acceleration. A failed mass air flow sensor will require replacement.
1993 Lexus ES300 Questions and Answers
i have a 1993 lexus es300 and the problem im having is that for one the check engine light came on a couple days ago which i know i'm gonna have to take it to get that checked out. right besi...
need help on putting a 1993 lexus es300 3liter v6 back into time
need to now how to check the code i have the ingine light on?
My car squeaks when I roll over a bump or pothole, I already replace the struts. Help, feels like my car is falling apart.
1993 Lexus ES300 Reviews
I have two Lexus ES 300.
93 ES 300- had approximately 260K miles. on it and runs very strong.
'96 ES 300 - Runs like silk. This car rides and drive very well. No problems with this car at all. Its waiting on the next adventure.
this car has been through it all and has never given me any serious problems
(She had 185000 miles when i bought her and now she is over 212000)
the ones i do have are simple enough
bulb in dash needs to be replaced
radiator needed to be changed 30 min job
heat could be hotter but it does great as long as you are moving
and air intake hose cracked a 3 min repalacement job
air conditioner blows hot but i have 4 windows and a moonroof
and i broke the front drivers axel in a pothole but overall i think i have spent
300 on repairs since i bought her for 3600
i aint mad at all
i just don't have the tools to give it a tune-up
She rolls like a new car especially after repairing that intake hose
and i have no idea how to replace the guage lights they come on intermittently
the body was great but had suffered hail damage so i took off for that and who knew how important cup holders and ashtray placement were(picky)
as soon as i can afford a tune up i will jump for joy again