LS - 1st and 2nd Gen (1990-2000) Discussion topics related to the 1990 - 2000 Lexus LS400

Check Engine Light 5 minutes a day

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Old 02-22-13, 04:41 PM
  #16  
LScowboyLS
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How to check the AFM?
Can I clean it with those spay selling at store?
you are not reading the answers very carefully

I specifically said that you do not want to use commercial cleaners on the AFM (MAF) up in post #8
Old 02-22-13, 07:52 PM
  #17  
PureDrifter
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pre '95 cars had AFMs, (NOT MAFs...) which shouldn't be cleaned by anything more than some compressed air and a clean cotton cloth.

Last edited by PureDrifter; 02-22-13 at 09:54 PM. Reason: clarification
Old 02-22-13, 09:47 PM
  #18  
LScowboyLS
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pre '95 cars had AFMs, which shouldn't be cleaned by anything more than some compressed air and a clean cotton cloth.
this sounds familiar! - lol
Old 02-22-13, 10:30 PM
  #19  
richfung
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Thanks.
I will clean it gently and check leaks. I saw a crack under the Mass air flow rubber tube where the clam tiding ( very harden when I touch it) . How to check if it leaks? Any way to seal it?
I plan to plug the air control valve on the PS pump. Do I need to remove the valve or just plug them all with caps? What is the size?
Old 02-23-13, 01:23 PM
  #20  
ls400geek
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Originally Posted by richfung
Two days with no CEL.
I guess the vacuum hose was the issue.
Now I am lining up the projects.
1. rear brake pad and bleed all brake fluids. How much brake fluid I need?
2. Power steering pump. Is it better get the $125 eBay one or $140 from autozone?
3. new plugs, wires, caps, coolant temp sensor and main seal. What is good but not too expensive?
4. Replace cracked door handle and side marker.
5. Replace subwoofer that have no base for 2 years.
I heard a small noise the moment when I making right turn, is the the rack or shock?
Am I missing anything?
1. Buy a 32oz container of DOT 3 brake fluid. (e.g. $8 for Valvoline Dot 3/Dot 4).
2. How about rebuilding the existing power steering pump?
Old 04-01-13, 05:27 PM
  #21  
richfung
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1. Blake bleed and rear pad changed.
2. Changed PS pump with IAC plugged.
3. New NGK IR plugs, check wires still within spec so no change needed.

CEL came back every other day, code 25.
What should I do?
Old 04-02-13, 08:49 PM
  #22  
lexxpro
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Originally Posted by richfung
1. Blake bleed and rear pad changed.
2. Changed PS pump with IAC plugged.
3. New NGK IR plugs, check wires still within spec so no change needed.

CEL came back every other day, code 25.
What should I do?
My 93 had the same problem. You need one or both front o2 sensors. And make sure to use oem Denso ones. I got mine for about $55 each on amazon
Old 04-02-13, 09:00 PM
  #23  
4hunna
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Recently bought a can of MAF cleaner for my other car and it specifically says not to use it on any Lexus, or Supra Turbo. What are we supposed to use for our cars? Not really thread jacking because it COULD be relevant to the OP's problem.

Literally laughed out loud when I read the warning label on the can. This was 2 days prior to picking up my LS. There goes $7.99
Old 04-03-13, 05:39 AM
  #24  
python
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I told u what it was..02 sensor
its one of ur front 02 sensors..have a shop check them for switching problems.
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