90 ls4700 - stall out every 5-6 secs
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90 ls4700 - stall out every 5-6 secs
Hello Family,
My 90 ls400 idles smooth until it warms up and begin to stall out every 5-6 secs. I changed the spark plugs, fuel pump relay resistor, fuel pump relay, maf sensor, and coils. Car continues to do the same thing. Fuel pump seems to be good since it runs smooth for 30 minutes till warm up. Im checking the open circuit relay when i get home, anyone have any other ideas. i reset the ecm already. Im stuck after the relay check tonite.
Thanks in advance for your assistance.
My 90 ls400 idles smooth until it warms up and begin to stall out every 5-6 secs. I changed the spark plugs, fuel pump relay resistor, fuel pump relay, maf sensor, and coils. Car continues to do the same thing. Fuel pump seems to be good since it runs smooth for 30 minutes till warm up. Im checking the open circuit relay when i get home, anyone have any other ideas. i reset the ecm already. Im stuck after the relay check tonite.
Thanks in advance for your assistance.
Last edited by RA40; 09-11-15 at 10:11 AM. Reason: title adjustment
#2
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Welcome to Club Lexus.
On the first gen one of the high list checks when they aren't running well is this thread:
https://www.clublexus.com/forums/ls-...capacitor.html
Other regular maintenance:
https://www.clublexus.com/forums/ls-...ange-pics.html
Some additional reading:
https://www.clublexus.com/forums/ls-...ing-power.html
On the first gen one of the high list checks when they aren't running well is this thread:
https://www.clublexus.com/forums/ls-...capacitor.html
Other regular maintenance:
https://www.clublexus.com/forums/ls-...ange-pics.html
Some additional reading:
https://www.clublexus.com/forums/ls-...ing-power.html
#3
Temperature related, could be ect, O2 sensors, I would be checking the components not just replacing them unless you have a good supply of parts. Well you may have some when your done. And was the LS4700 a special option?
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Ok i got the Ecu back in with the new Capacitors, engine runs for 1hr:40mins now before the replacement capacitors it would stall out at 30 mins. Now its stalling at at the time mentioned above. Fuel relay is clicking as the car surges up and down. Im checking crankshaft sensor next, any ideas after this check would be appreciated.
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Ok i got the Ecu back in with the new Capacitors, engine runs for 1hr:40mins now before the replacement capacitors it would stall out at 30 mins. Now its stalling at at the time mentioned above. Fuel relay is clicking as the car surges up and down. Im checking crankshaft sensor next, any ideas after this check would be appreciated.
#10
Ok i got the Ecu back in with the new Capacitors, engine runs for 1hr:40mins now before the replacement capacitors it would stall out at 30 mins. Now its stalling at at the time mentioned above. Fuel relay is clicking as the car surges up and down. Im checking crankshaft sensor next, any ideas after this check would be appreciated.
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