1998 GS400 cranks but won't start....😭😭😭 - ClubLexus - Lexus Forum Discussion


GS - 2nd Gen (1998-2005) Discussion about the second generation GS300, GS400 and GS430 (1998 - 2005)

1998 GS400 cranks but won't start....😭😭😭

Reply
 
 
 
Thread Tools Search this Thread
Old 12-04-17, 04:52 PM   #1
0to100
Driver School Candidate
Thread Starter
 
Join Date: Oct 2017
Location: SC
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
Default 1998 GS400 cranks but won't start....😭😭😭

Hey guys...i recently purchased a '98 GS4 about 2 months ago. The car was in need of tlc. So i figured i would buy it and bring it back to life. It's high mileage at about 240,000 miles. I dont know the history of the car. I bought it from a shady acting couple. Been replacing things since the day i bought it. Now on to the current issue. Drove it last Wednesday without any issue. Thursday morning i came out to head to work and it wouldn't start. It's trying to crank but wont start. Put the obd2 reader on it and it just gave me the code for o2 sensors. Which i knew the car needed. Replaced the fuel pump and replace the relay. Note: after looking thru the fuses. The car is filled with wrong amp fuses. Meaning it may require a 10 amp but it has a 20 amp in its place. Honestly probably 10+ fuses have the amp fuses in place. Its currently my only car and i really need it back on the road. I've tried to jump the car and it just does the same thing. Thanks in advance for help
0to100 is offline   Reply With Quote
Old 12-04-17, 06:49 PM   #2
vijayn
Driver
 
Join Date: Apr 2013
Location: Auckland, NZ
Posts: 155
Thanks: 0
Thanked 5 Times in 5 Posts
Default

Judging by the wrong fuses in place, it could be a burnt out wire or a control module power failure. If the engine ECU hasn't got any codes, it may be because the ecu isn't receiving one of the 12V or ground supplies. This is why it hasn't logged any new codes.

I would start by making sure all fuses are all good first and the correct ones are there. Then check on the ecu connectors whether the correct 12V and ground is on the appropriate pins.

Unfortunately I don't have a wiring diagram for a GS400
vijayn is online now   Reply With Quote
Old 12-04-17, 06:54 PM   #3
0to100
Driver School Candidate
Thread Starter
 
Join Date: Oct 2017
Location: SC
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
Default

That's the plan for tomorrow. Getting all the correct fuses in place. Then start wire chasing
0to100 is offline   Reply With Quote
Old 12-04-17, 07:13 PM   #4
Mr Jokster
Lexus Fanatic
iTrader: (8)
 
Mr Jokster's Avatar
 
Join Date: Aug 2008
Location: California
Posts: 6,207
Thanked 34 Times in 32 Posts
Default

You need to start with the fundamentals first. Find out why its not cranking, is it because lack of fuel or lack of spark, then you can go from there.
Mr Jokster is offline   Reply With Quote
Old 12-04-17, 08:33 PM   #5
FrankT
Lexus Test Driver
 
Join Date: Nov 2005
Location: Cedar Park, Texas
Posts: 841
Thanked 5 Times in 4 Posts
Default

You say it’s cranking but not starting?
So is the starter turning the motor and there is no ignition?

Is there a check engine light on when the key is in the “ON” position?
This will indicate that the ECU has power.

Get those fusses sorted out hopefully that’s your issue.

Good luck.
FrankT is offline   Reply With Quote
Old 12-05-17, 04:49 AM   #6
0to100
Driver School Candidate
Thread Starter
 
Join Date: Oct 2017
Location: SC
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Won't be able to touch the car until after work. So far this is all i could have come up with. Some of the fuses need to be change. I thought the fuel pump was the issue. Wasn't that...i changed the pump and relay for the efi. Im not familiar with Toyota/Lexus. I'm a chevy guy...it gave me signs like it wasn't getting fuel. That's why i jumped and replaced the pump. When i put the key in the ignition its turning over like the starter is engaging and thats all i get. I get all the dash lights when i turn the key. So its just a steady cranking and won't catch to start. I have switch some relays out. The car was abused before i got it.
0to100 is offline   Reply With Quote
Old 12-05-17, 07:28 AM   #7
Mr Jokster
Lexus Fanatic
iTrader: (8)
 
Mr Jokster's Avatar
 
Join Date: Aug 2008
Location: California
Posts: 6,207
Thanked 34 Times in 32 Posts
Default

Throw some carb cleaner in the TB, or hold a rag over the intake doused in gas. Chevy, Lexus, Hyundai... ALL cars work the same. If the car starts with what I just noted, then you know you've got a fuel problem.

Now don't forget, just because the fuel isnt working, doesn't necessarily mean its a fuel problem. Could also be the anti-theft system malfunctioning... Whats the condition of your key?
obviously anti-theft is worse case scenario...
Mr Jokster is offline   Reply With Quote
Old 12-05-17, 08:22 AM   #8
0to100
Driver School Candidate
Thread Starter
 
Join Date: Oct 2017
Location: SC
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
Default

The condition of the key is that its an aftermarket one. Like the ones you get from home depot or lowes. Its the only key previous owners gave me.
0to100 is offline   Reply With Quote
Old 12-05-17, 08:48 AM   #9
kevin3344
Lead Lap
 
Join Date: Jul 2015
Location: North Carolina
Posts: 514
Thanks: 0
Thanked 52 Times in 48 Posts
Default

I think your key can't do the handshake with the ECU...I would get a proper key made from the Lexus dealer and go from there. You will need to provide proof of ownership.
kevin3344 is offline   Reply With Quote
Old 12-05-17, 11:57 AM   #10
vijayn
Driver
 
Join Date: Apr 2013
Location: Auckland, NZ
Posts: 155
Thanks: 0
Thanked 5 Times in 5 Posts
Default

Have you checked out the basics as Mr Jokster said? Is there fuel and spark/ignition?
Can you confirm that the pump turns on and delivering fuel when ignition is turned on?
Judging by how the previous owner has changed fuses around I assumed the problem is more likely something has burnt out. But now that you say you have a third party key, this would cause the same issues.
Check to see what happens to the red security light before and after you insert the key to start the engine.
vijayn is online now   Reply With Quote
Old 12-05-17, 12:17 PM   #11
kevin3344
Lead Lap
 
Join Date: Jul 2015
Location: North Carolina
Posts: 514
Thanks: 0
Thanked 52 Times in 48 Posts
Default

Quote:
The condition of the key is that its an aftermarket one. Like the ones you get from home depot or lowes.
Are you sure you don't have the valet key? It's the one in the center of the photo below. As others have mentioned start with spark/fuel but whatever you do *don't* buy parts hoping you've solved the problem. At that point take it to a reputable Lexus dealer and have them do a diagnostic for $140. Because you'll be going in circles trying to figure it out.

kevin3344 is offline   Reply With Quote
Old 12-05-17, 04:30 PM   #12
Mr Jokster
Lexus Fanatic
iTrader: (8)
 
Mr Jokster's Avatar
 
Join Date: Aug 2008
Location: California
Posts: 6,207
Thanked 34 Times in 32 Posts
Default

Wow, people really ran with the key thing, but you all got it wrong!

OP stated he's driven with the key before, so regardless where it came from, its not the problem; not to mention, its not the actual key that talks to the ecu. The transponder is in the housing which is transferred from key to key. I've been using aftermarket keys for years without fail...

OP, my bad... I meant to ask, whats the condition of the transponder part of the key, not the key itself. Have you by any chance dunked it in water or anything?
Mr Jokster is offline   Reply With Quote
Old 12-05-17, 05:44 PM   #13
0to100
Driver School Candidate
Thread Starter
 
Join Date: Oct 2017
Location: SC
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Quote:
Originally Posted by Mr Jokster View Post
Wow, people really ran with the key thing, but you all got it wrong!

OP stated he's driven with the key before, so regardless where it came from, its not the problem; not to mention, its not the actual key that talks to the ecu. The transponder is in the housing which is transferred from key to key. I've been using aftermarket keys for years without fail...

OP, my bad... I meant to ask, whats the condition of the transponder part of the key, not the key itself. Have you by any chance dunked it in water or anything?
The transponder has never been in water. I take good care of it especially since its the only key i have for the car.
0to100 is offline   Reply With Quote
Old 12-05-17, 06:27 PM   #14
vijayn
Driver
 
Join Date: Apr 2013
Location: Auckland, NZ
Posts: 155
Thanks: 0
Thanked 5 Times in 5 Posts
Default

Quote:
Originally Posted by Mr Jokster View Post
Wow, people really ran with the key thing, but you all got it wrong!

OP stated he's driven with the key before, so regardless where it came from, its not the problem; not to mention, its not the actual key that talks to the ecu. The transponder is in the housing which is transferred from key to key. I've been using aftermarket keys for years without fail...

OP, my bad... I meant to ask, whats the condition of the transponder part of the key, not the key itself. Have you by any chance dunked it in water or anything?
The car working and now not working, doesn't mean that it has nothing to do with the immobilizer system though, it could still be a faulty amplifier module, wiring etc that is now not working. Its not only the key that can get faulty. Also the transponder it self can become faulty too. To help confirm this, he can check the status of the red security light. This will confirm that the transponder and amplifier are communicating and the ecu is ready to go.
The sooner you can test all these suggestion OP the clearer the picture we will get.
vijayn is online now   Reply With Quote
Old 12-06-17, 03:28 AM   #15
0to100
Driver School Candidate
Thread Starter
 
Join Date: Oct 2017
Location: SC
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Ok guys here's the update. Change a the fuses on the driver side kick panel to the correct ones. Which was probably 3 i didnt have to change. Change all the fuses and relays in front of the battery. Got a fresh battery. On to the key. The red blinks until i put the key in and turn it. The red light goes away. I got full power to everything. I did have one blown fuse. It was to the slot for ECU-IG on the driver side kick panel. I did replace the fuses in that fuse block with the correct ones. One thing i didnt mention before is the car did have what i call a slow crank. Meaning I'll have to hold the key for like 2 seconds. Where normally in other cars its a turn automatically start. Thats how it crank since the day i got it. Thanks for everyone that has been responding. Im used to the impala forum and they are nowhere near as helpful as you guys.
0to100 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
It's hard to say goodbye guys 😧 cciepunk IS F (2008-2014) 10 11-10-17 05:02 AM
Transmission issue Juan75211 GS - 3rd Gen (2006-2011) 3 01-26-17 06:34 PM
Radio/Navgiation/Climate controls not coming on lammers87 LS - 3rd Gen (2001-2006) 0 12-26-16 11:03 AM
Help on speakers please! ImSoClean Performance & Maintenance 2 12-25-16 08:28 PM
Radiator replacement Fixman LS - 3rd Gen (2001-2006) 24 02-18-16 09:18 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump


All times are GMT -7. The time now is 12:59 PM.


Copyright © 2000-2017 Internet Brands, Inc. All Rights Reserved We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: