new member from South Carolina... HELP
12-29-13, 03:14 PM
#1
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new member from South Carolina... HELP
hello guys! Name is Brad, just bought a 93 LS400.. got it to the shop I work at and it wouldn't start back.. checked over everything and all sensors are good everything is pointing towards ecu.. any help would be appreciated! no fuel, no spark, timing is dead on, trying to find correct ecu...
any thoughts
any thoughts
12-29-13, 05:30 PM
#2
Lexus Champion
please read my extensive thread on failing ECU capacitors - very common on your year!
another problem area is Idle Air Control Valve
please attempt to download the diagnostic codes following the instructions here
and by the way, even with a bad ECU, you would still like have either fuel or spark or both - please provide us with a bit more specific information on how you have come to the conclusions that you have neither fuel nor spark!
another problem area is Idle Air Control Valve
please attempt to download the diagnostic codes following the instructions here
and by the way, even with a bad ECU, you would still like have either fuel or spark or both - please provide us with a bit more specific information on how you have come to the conclusions that you have neither fuel nor spark!
Last edited by LScowboyLS; 12-30-13 at 01:10 AM.
12-30-13, 10:38 AM
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Came to this cunclusion by putting a spark plug into each plug wire and leaning it against metal.. no arc.. checked at the coil, no arc..
Fuel pump kicks and has pressure... but using a noid light determined that none of my injectors are firing
If I am supposed to have a bad ECU and still have fuel and spark it would run...
also checked CMS and CKS both reading exactly as they should from specs seen..
Fuel pump kicks and has pressure... but using a noid light determined that none of my injectors are firing
If I am supposed to have a bad ECU and still have fuel and spark it would run...
also checked CMS and CKS both reading exactly as they should from specs seen..
12-30-13, 11:30 AM
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Probably been addressed but here is goes.. remember I'm new lol
ok so besides my ECU (figers crossed) issue, my instrument cluter nor hvac/radio backlights work.. the gauges seem to work but no lighting, same with the radio and hvac controls..
upon initial key turn the needles on the cluster will light up then go out.. the dash and hvac controls never light up.. i got the car for what i thought was a pretty good deal.. but with the issues im having im thinking i screwed up..
upon initial key turn the needles on the cluster will light up then go out.. the dash and hvac controls never light up.. i got the car for what i thought was a pretty good deal.. but with the issues im having im thinking i screwed up..
12-30-13, 03:02 PM
#6
Lexus Champion
please do the 30 second test at 5:53 in this video below
that will check your igniters, coils, and the associated wiring
if that is OK, then check fuel pressure on rail
new caps, rotors, plugs and wires are always a good plan, use the real Toyota caps and rotors, and either Denso or NGK on the plugs and wires - the plugs and wires are cheap at amazon.com and rockauto.com
that will check your igniters, coils, and the associated wiring
if that is OK, then check fuel pressure on rail
new caps, rotors, plugs and wires are always a good plan, use the real Toyota caps and rotors, and either Denso or NGK on the plugs and wires - the plugs and wires are cheap at amazon.com and rockauto.com
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