95 LS400 stalls no CEL's
#1
Driver School Candidate
Thread Starter
95 LS400 stalls no CEL's
Hello Forum,
A few months back I purchased a 1995 LS400 with about 170k on the clock. It was a 2 owner with full documentation from Lexus so I can see all of the records. It was well taken care of and I do not think anyone ever sat in the back seat. Water Pump and Timing done within last 50k. Engine is clean enough to eat off of.
Runs great. No issues. Well, for the first 4k. I then had an issue where it stalled. No CEL at this point. I restart, the RPM's are high(1200) on start and level out and I get the car home and run a diagnostic. I ran an OBDII and it tells me it is the Engine Coolant Temperature Circuit. Driving to the mechanic to get it replaced I get a CEL . P1600. So I take it in, get it repaired and no CEL's. Car is running good. 700 RPM. No issues.
Two weeks go by and at a light...it drops to 200 RPM and stalls. Starts right back up and for another week no issue. No CEL. No error codes in OBDII.
So, Lexus community, any ideas? I have looked around in the forums but most show multiple issues or the CEL 1600 not clearing.
Thanks!
A few months back I purchased a 1995 LS400 with about 170k on the clock. It was a 2 owner with full documentation from Lexus so I can see all of the records. It was well taken care of and I do not think anyone ever sat in the back seat. Water Pump and Timing done within last 50k. Engine is clean enough to eat off of.
Runs great. No issues. Well, for the first 4k. I then had an issue where it stalled. No CEL at this point. I restart, the RPM's are high(1200) on start and level out and I get the car home and run a diagnostic. I ran an OBDII and it tells me it is the Engine Coolant Temperature Circuit. Driving to the mechanic to get it replaced I get a CEL . P1600. So I take it in, get it repaired and no CEL's. Car is running good. 700 RPM. No issues.
Two weeks go by and at a light...it drops to 200 RPM and stalls. Starts right back up and for another week no issue. No CEL. No error codes in OBDII.
So, Lexus community, any ideas? I have looked around in the forums but most show multiple issues or the CEL 1600 not clearing.
Thanks!
#3
Driver School Candidate
Thread Starter
P1600
I would have thought the same thing but I pulled the fuse and the CEL cleared. No issues. It just does it about every 6-7 times I use it.
Thanks!
Thanks!
#5
Moderator
Other than the common QAS capacitors issue, a 95 model has a known issue in the ECU.
See below and check the ID of the ECU.
https://www.clublexus.com/forums/ls-...xus-ls400.html
See below and check the ID of the ECU.
https://www.clublexus.com/forums/ls-...xus-ls400.html
#7
Driver School Candidate
Thread Starter
Allright...I was tired of stalling every 3rd time i drove it and found a remanufactured ECU for 225 bucks. Had it sent and now I need to install it. I have read some articles online but none talk about potential gotchas with getting in there to replace. Is there anything I can break when removing the dash I should worry about. The car is in awesome condition for the mileage and don;t want to strong arm and break anything. I will be installing it this weekend.
thanks!
thanks!
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#9
Driver School Candidate
Thread Starter
Thanks Dicer. All I can find are Gen 1 Pre-95 videos....I an sure it will be ok but I wanted to know about anyu gotchas. You can watch all the videos you want but we all know we can get......stuck.
#10
With the air bag and cd player around the glove box it makes all that real different. It isn't the easiest thing to do on the Gen 1's at all, the glove box is the main hassle.
#11
Super Moderator
iTrader: (6)
Most the screws to remove stuff are visible. There is one center screw behind the glove box that is kinda hidden.
https://www.clublexus.com/forums/ls-...glove-box.html
Be gentle when removing the wiring harness release clips.
https://www.clublexus.com/forums/ls-...glove-box.html
Be gentle when removing the wiring harness release clips.
#12
Driver School Candidate
Thread Starter
Ok. So it is in. I tested it. Perfect Idle. 650 RPM. Took it out and HOLY BAT ***** I have new car. I thought i was babying it before and knew it would not accelerate like my old MR2 but I not know what it is like to drive the infamous 1UZ-FE V-8 at full throttle. I am going to post the steps because there are a few things that are not mentioned that are there in the 95 that is not in any of the stickies for the 94 and older swaps. There is a cruise control unit that needs to be unplugged as well as two very hidden screws I did not see and caused a broken bracket.
Best 225 I have spent on a car....
Thanks for all of the follow ups and confirmations in my journey to get this resolved.
Best 225 I have spent on a car....
Thanks for all of the follow ups and confirmations in my journey to get this resolved.
#14
I wish I would have thought about you at the junk yard the other day. A 95 I was pulling parts off had a 2009 reconditioned ECM. I pulled it and left it in the seat. I could have sent it to you for $100 or so.
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