When I turn the key to the on position the check engine light doesn't show, when I start it up the car struggles a tad bit then turns over idle shoots up right below 2000rpm and holds there, I reverse fine but when I try to accelerate its like its losing power. I can't accelerate.

 

No one can help you until you tell us your year model, mileage, etc.

 

90-92, 93&94, 95-97, 98-2000 assuming you have a LS400.

 

Hello people that run this site, please have special model year placement so we don't have to keep asking this...................
Grouping as such 90 to 92 /////// 93 to 94 /////// 95 to 97 /////// 98 to 2000 its not rocket science and with this modern computer age easy stuff.

 

Sorry for the late reply CL I forgot my password, but car is still doing the same thing. There is a PS Leak and there was a Hole or tear in the air intake hose. I covered it with tape for the time being and removed and plugged both PS pump hoses leading to the air intake. Although I did not yet plug the bottom valve yet. The car has a slow drip of PS fluid, noted that when the car runs cold the check engine light does not come on and car runs smooth once warmed up I hear a knock sound then car drops idle and check engine light comes on. When. I turn the car off and turn it back to the on position all the lights come on except for the check engine light, up until I hard start it and then it appears and car sounds like and feels like its choking. I feel like it could be an air problem but I'm reading a lot and starting to think IACV or ECU and MAF. Please help. (((1994 Lexus ls400 180*** miles anniversary edition.)))

 

Also to note that this problem only occurs when car is heated to operating temp. so something that would have to do with heat? im getting no indication of overheating at all the coolant level is fine and car can run for awhile with no overheating problems. Although, there is alot of heat coming from bottom of car and from the engine when i stop, but still i feel as if its congested or choking. ive already did the diagnostic test and came back 41 which means a babd TPS which i have. the TPS went out about 4 days ago. could it be the air filter?? if so can someone please put up a diagram or picture showing how to remove it.