Problem
Thread Starter
Driver School Candidate
Joined: Jan 2011
Posts: 1
Likes: 0
From: MN
Problem
I have a 1991 Ls 400 an i vend having these problem wth it when i go step on the gas my car wont go it buggs then after couple of secons it will go like if it not getting gas. but i plug my scanner n i get a code IAT, and mixture control continuously lean. how can i cheak my IAT or give me a tip?
Driver School Candidate
Joined: Jan 2010
Posts: 37
Likes: 0
From: AZ
Your issue
Honestly it was a little difficult making out what you were saying, but I think I was able to decipher it:
I'd certainly replace the IAT if your scanner is complaining about it. Its an easy part to get and replacing it on a car with 100K+ miles makes sense.
Also have you looked into doing the typical maintenance of replacing the plugs/wires, and also taking a look at the throttle body for carbon build up etc.
I bought a 93 not to long ago and went through it in one day to do the above. Car ran spectacular after just a bit of maintenance.
I had some bad build up even on the side where the EGR valve was, i took it off and there are two "holes" that had alot of nasty carbon where the the valve was. It ran like crap. Once I cleaned it out with Throttle body cleaner, it ran SO much better and instantly passed smog as well.
Our car's are typically owned by a generation of people that had $40K+ and "just wanted it to run" -- which means they did not typically do maintenance on them.
I'd start there but that's my two cents.
I'd certainly replace the IAT if your scanner is complaining about it. Its an easy part to get and replacing it on a car with 100K+ miles makes sense.
Also have you looked into doing the typical maintenance of replacing the plugs/wires, and also taking a look at the throttle body for carbon build up etc.
I bought a 93 not to long ago and went through it in one day to do the above. Car ran spectacular after just a bit of maintenance.
I had some bad build up even on the side where the EGR valve was, i took it off and there are two "holes" that had alot of nasty carbon where the the valve was. It ran like crap. Once I cleaned it out with Throttle body cleaner, it ran SO much better and instantly passed smog as well.
Our car's are typically owned by a generation of people that had $40K+ and "just wanted it to run" -- which means they did not typically do maintenance on them.
I'd start there but that's my two cents.
Last edited by phxls400; Jan 1, 2011 at 06:03 PM.
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