how do you replace a 92 sc400 fuel pump? - Club Lexus Forums

Log In 

how do you replace a 92 sc400 fuel pump?

Reply
 
 
 
Thread Tools Search this Thread
Old 11-15-08, 01:53 PM   #1
snsrushing
Rookie
Thread Starter
 
Join Date: Dec 2007
Location: Michigan
Posts: 53
Default how do you replace a 92 sc400 fuel pump?

A little back story I tried jumping the fuel pump ecu by going from Fp to +B and I still get the stumbling, jerking under heavy accelerating. I found out that I didnt have the spark plugs torqued down all the way and that took some of it away, its not as violent when getting on the gas. Also I'm about 4 pounds low on my fuel pressure. My line if thought was that the fuel pump ecu wasnt going over from 9v to 12v under load.
So long story short I want to try to replace the fuel pump? How do I do it? Also who makes a drop in replacement, I thought I read somewhere maybe on one of the Aussie sites that Bosch(?) needed some wiring mods to work right?
Is the Python or Walbro fuel pump a direct drop in or do you need to fab it up?

And I thought this was weird, I notice a slight beeping as I'm starting it up, it almost sounds like its coming from the rear of the car.
snsrushing is offline   Reply With Quote
Old 11-15-08, 04:03 PM   #2
mitsuguy
Maintenance Moderator
iTrader: (2)
 
mitsuguy's Avatar
 
Join Date: May 2005
Location: AZ
Posts: 6,372
Default

4 psi should not cause your issue...
mitsuguy is offline   Reply With Quote
Old 11-16-08, 09:56 AM   #3
snsrushing
Rookie
Thread Starter
 
Join Date: Dec 2007
Location: Michigan
Posts: 53
Default

I tried messing with the TPS in one position I got it so that if I let off the gas while driving I could feel the car kinda lurch like if you where driving in first and let off, so I re-tweeked and got so that it stalled at a stop light, re-tweeked and now its better but on hard acceleration it still seems to miss. Any ideas?

If its still the TPS does anyone have what the ohms are supposed to be across the pins and the pin out for the TPS, I found on it some Aussie site but I didnt book mark it
snsrushing is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
SC400 new fuel pump, ECU bypass, stranded again bigwhite Performance & Maintenance 27 10-12-14 09:26 AM
Aristo Swap & Fuel Pump ECU Issues 98SC Performance & Maintenance 14 09-11-12 09:12 AM
Replaced Fuel Pump, still have issues. MrBooby ES - 1st to 4th Gen (1990-2006) 16 02-16-12 02:21 AM
Toyota Soarer (SC chassis) Power to Fuel Pump Retox Maintenance 11 12-27-09 09:54 AM
Toyota Soarer (SC chassis) Power to Fuel Pump Retox Performance & Maintenance 9 12-20-09 03:19 AM


Tags
400, 92, bosch, change, feul, fuel, gauge, lexus, location, ohm, pump, reading, replace, sc, sc400

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 06:29 PM.


Copyright © 2000-2016 Internet Brands, Inc. All Rights Reserved