tonybu32

Hello friends, when i try to floor or even accelerated to pass another vehicle my car stalls. It doesn't cut off but it hesitates and the engine light comes on and it seem to put put. Then when I let off the gas I can accelerated but only slowly. Help please!

Moarpower

Likely a fuel air issue. SO the afm could be failing or there could be an issue with the fuel delivery.

Legender

Sounds like faulty ECU to me. Have you checked it?

IzzyFlexus

Im having the same exact problem with my 94 ls, its when i start to give it a good amount of throttle it kinda studders and jerks and the check engine light comes on for a few seconds

dlcoffin

...such as clogged fuel injectors, filter, dirty/poor/non premium fuel?

OMAHA

This is what I've done for my fuel system....all preventive maintenance. Change spark plugs, wires, distributor, fuel filter, pcv valve..... run a fuel system cleaner thru it (SEA FOAM).... if you need a new CPU try finding one online and install yourself.... save a TON OF MONEY!

Chillymorn

Clogged catylic converter.

Thats my guess

Sin1UZFE

Easy test would be try to floor then stop to see if cat is red hot

YODAONE

Hook up a vacuum gauge and see if reading drops at steady higher RPM

sdls

I don't know if the 94 LS400 is OBDII compliant but if not, at least on older Toyotas, jumpering TE1 and E1 on the diagnostic socket revealed the engine diagnostic 'blink codes' that correspond to the issue.