suddenly not responsive and shifting is off

20

Asked by Nov 01, 2013 at 10:57 AM about the 1993 Lexus LS 400 RWD

Question type: Maintenance & Repair

My Lexus LS400 stuttered for a few seconds when pulling into a parking lot.  After a
meal the car started fine but didn't respond well when I went to pull out onto the road.  
The car was very sluggish, not responding to the gas pedal.  Then it stalled going
around a corner when I stepped on the pedal and at a stoplight, too.  It also wouldn't
shift well, yet when I shifted manually the car ran well through the first three gears.  
This car has been running beautifully and the problem occurred like a switch was
flipped.  Can someone tell me what's going on with this car?

6 Answers

Get your diagnostics...okay the '93 Lexus has OBD-I....have the trouble codes read and report~...ANY autoparts store does this for you for free...some are friendlier about it...NAPA has always been very co-operative with me~

2 of 2 people found this helpful.

really sounds like a vacuum leak or sudden destruction of the diaphragm in your fuel pressure regulator~....techron (don't trust stuff that 'cleans' , cleans away critical components, like the flexible diaphragm of the fuel pressure regulator~ this might be/could be the cause....good luck provin' that in court~

2 of 2 people found this helpful.

a faulty fuel pressure regulator will issue NO info to the OBD-I system~

1 of 1 people found this helpful.
20

Just got back from checking trans fluid and that looks fine. Thanks for taking time to help me j_r. I appreciate your time and knowledge. You wouldn't happen to work in the Detroit area would ya?

2 of 2 people found this helpful.

not Detroit...Milwaukee for eighteen years...then escaped to California...wine country...perfect year round...beautiful sun~ you must apply suction to the fuel pressure regulator to see if it's regulatin' or torn diaphragm~

20

I have a 93 lexsus lx400 it all.of a sudden not shift in drive fluid good it reverse well im.a female with no help any clue any one

2 of 2 people found this helpful.

Your Answer

LS 400

Looking for a Used LS 400 in your area?

CarGurus has 170 nationwide LS 400 listings starting at $1,991.

ZIP:

Lexus LS 400 Experts

  • #1
    Tom Demyan
    Reputation
    490
  • #2
    dandyoun
    Reputation
    220
  • #3
    littlehorn
    Reputation
    200
View All

Related Models For Sale

Used Lexus GS 300
20 Great Deals out of 661 listings starting at $2,750
Used Lexus ES 300
12 Great Deals out of 828 listings starting at $1,427
Used Mercedes-Benz E-Class
677 Great Deals out of 21,918 listings starting at $1,500
Used BMW 3 Series
1,035 Great Deals out of 33,511 listings starting at $1,000
Used Toyota Camry
928 Great Deals out of 89,694 listings starting at $300
Used Mercedes-Benz S-Class
162 Great Deals out of 7,602 listings starting at $2,000
Used BMW 7 Series
99 Great Deals out of 5,237 listings starting at $2,999

Used Cars For Sale

2000 Lexus LS 400 RWD For Sale
27 listings starting at $3,999
1999 Lexus LS 400 RWD For Sale
20 listings starting at $1,991
1998 Lexus LS 400 RWD For Sale
27 listings starting at $2,350

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.