eck_007 Posted August 20, 2008 Share Posted August 20, 2008 need some info :( ......... ok, my water pump is bad on my 90 ls400 w/a v8. i went to the local parts store and got one. there seems to be a few differences in them. the new pump has a smooth pully and mine has a ribed one. it also looks to be shorter from the engine to the rad. i was just wondering if they used 2 diff water pumps? the part no. for the new pump is WP 9404 Quote Link to comment Share on other sites More sharing options...
IS400 Posted August 20, 2008 Share Posted August 20, 2008 need some info :( ......... ok, my water pump is bad on my 90 ls400 w/a v8. i went to the local parts store and got one. there seems to be a few differences in them. the new pump has a smooth pully and mine has a ribed one. it also looks to be shorter from the engine to the rad. i was just wondering if they used 2 diff water pumps? the part no. for the new pump is WP 9404 I did a write up on mine. I do not know how to search it other than 'water pump replacement'. It is in the tech section also. Do NOT even consider doing this job without getting schooled on what is actually involved. Makes sure to have 2-3 days set aside where you do not need the car for transportation. I highly recommend getting a true oem japanese water pump kit for this job. Quote Link to comment Share on other sites More sharing options...
Threadcutter Posted August 20, 2008 Share Posted August 20, 2008 need some info :( ......... ok, my water pump is bad on my 90 ls400 w/a v8. i went to the local parts store and got one. there seems to be a few differences in them. the new pump has a smooth pully and mine has a ribed one. it also looks to be shorter from the engine to the rad. i was just wondering if they used 2 diff water pumps? the part no. for the new pump is WP 9404 I did a write up on mine. I do not know how to search it other than 'water pump replacement'. It is in the tech section also. Do NOT even consider doing this job without getting schooled on what is actually involved. Makes sure to have 2-3 days set aside where you do not need the car for transportation. I highly recommend getting a true oem japanese water pump kit for this job. eck: I agree with IS400. In reality, you want to replace your timing belt, idlers, tensioner and oh, by the way, you might as well replace the water pump while you're in there. It may not be apparent now, but in order to replace your water pump, you must remove the timing belt. It's not like most American cars. You might even want to pay someone who knows what they're doing to do it all for you. It's a PITA and IS400 is right; don't cut yourself on time. My days of doing it myself are over. Take a look at the procedure from LexLS.com; LexLS Timing Belt Replacement Quote Link to comment Share on other sites More sharing options...
eck_007 Posted August 22, 2008 Author Share Posted August 22, 2008 thanx for the info....it wasent as bad as i thought it would be. 4.5 hours and it was done. this site is great thanx again for the help. Quote Link to comment Share on other sites More sharing options...
python Posted August 22, 2008 Share Posted August 22, 2008 if u dont get an oem pump u will be sorry.....make sure the timing belt and the tensioners and idler pulley as well Quote Link to comment Share on other sites More sharing options...
jcrome04 Posted August 23, 2008 Share Posted August 23, 2008 for that job I would go all OEM and pay someone to do it. Just my personal opinion though. I would only tackle it if I were an Experienced Lexus tech Quote Link to comment Share on other sites More sharing options...
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