90 ls400
02-19-14, 09:26 PM
#1
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90 ls400
I just bought a 90 LS400 and it runs and drives like dream but when I hit the accelerator it bogs down but when I ease into it, there's no issues. I can use all the help I can get!
Thanks
Thanks
02-20-14, 02:04 AM
#2
Lexus Champion
could you do us a favor and download the codes using the procedure here and then post them in this thread?
also, you can do a tune up and often resolve these issues easily, if it were my car, here is what I would change out as a part of this tune up:
● spark plugs (Denso or NGK brand)
● plug wires (Denso or NGK brand) - don't skip the wires, they are likely 24 years old!
● distributor caps (Toyota, from online dealership such as Sewell Lexus using Club Lexus member discount)
● rotors (Toyota, from online dealership such as Sewell Lexus using Club Lexus member discount)
● engine coolant temperature sensor (Toyota p/n 89422-20010, from online dealership such as Sewell Lexus using Club Lexus member discount) - this step will often greatly improve fuel mileage!
● air filter (any major brand such as WIX, FRAM, Purolator, Denso, or Toyota)
● clean throttle body and butterfly valve with CRC throttle body cleaner (in a well ventilated area outside)
● carefully check all vacuum lines for splits or line not connected up or breakage
● carefully check intake hose and tube between AFM (MAF) and butterfly at opening main intake of throttle body for holes, open ports, or other air leaks
also, you can do a tune up and often resolve these issues easily, if it were my car, here is what I would change out as a part of this tune up:
● spark plugs (Denso or NGK brand)
● plug wires (Denso or NGK brand) - don't skip the wires, they are likely 24 years old!
● distributor caps (Toyota, from online dealership such as Sewell Lexus using Club Lexus member discount)
● rotors (Toyota, from online dealership such as Sewell Lexus using Club Lexus member discount)
● engine coolant temperature sensor (Toyota p/n 89422-20010, from online dealership such as Sewell Lexus using Club Lexus member discount) - this step will often greatly improve fuel mileage!
● air filter (any major brand such as WIX, FRAM, Purolator, Denso, or Toyota)
● clean throttle body and butterfly valve with CRC throttle body cleaner (in a well ventilated area outside)
● carefully check all vacuum lines for splits or line not connected up or breakage
● carefully check intake hose and tube between AFM (MAF) and butterfly at opening main intake of throttle body for holes, open ports, or other air leaks
Last edited by LScowboyLS; 02-20-14 at 02:09 AM.
02-26-14, 07:11 AM
#3
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many of us have had the same issue. a good read on the thread below.
i have personally had the 'bogging' you are talking about. ive changed the fuel pump (for walbro high flow), fuel filter, FPR, coils, plugs, plug wires, and i use a coolant additive to keep the temps down
https://www.clublexus.com/forums/ls4...r-problem.html
i have personally had the 'bogging' you are talking about. ive changed the fuel pump (for walbro high flow), fuel filter, FPR, coils, plugs, plug wires, and i use a coolant additive to keep the temps down
https://www.clublexus.com/forums/ls4...r-problem.html
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