98 GS300 won't start.
Thread Starter
Driver School Candidate
Joined: Dec 2009
Posts: 2
Likes: 0
From: SA
98 GS300 won't start.
Turned key and car started but idled rough. As soon as I touched the throttle, it died. Checked for spark - OK.
Replaced fuel pump. Still wouldn't start. Came across a
Complete fuel assembly and swaped it over. Now she started straight away. Am I correct in assuming that the fuel regulator that is part of the assembly is faulty??
Replaced fuel pump. Still wouldn't start. Came across a
Complete fuel assembly and swaped it over. Now she started straight away. Am I correct in assuming that the fuel regulator that is part of the assembly is faulty??
Instructor
Joined: Sep 2011
Posts: 1,242
Likes: 24
From: IL
Cars need fuel, air and spark to run. If you are missing any of them, it won't. Which don't you have? Its hard to not have any air. So we will forgo that.
Spray Gumout in throttle body. Crank it. If it fires up and dies, then you have spark and no fuel. You can keep it running by spraying shots of Gumout in the throttle body to keep it running.
Unplugging the MAF will trigger a MAF fail, but it will drop to Speed Density mode. Then it will run without a MAF.
Injectors are often all connected to one fuse. So check fuses. I have never seen an injector fuse blow, but none the less, it IS a possibility.
Spray Gumout in throttle body. Crank it. If it fires up and dies, then you have spark and no fuel. You can keep it running by spraying shots of Gumout in the throttle body to keep it running.
Unplugging the MAF will trigger a MAF fail, but it will drop to Speed Density mode. Then it will run without a MAF.
Injectors are often all connected to one fuse. So check fuses. I have never seen an injector fuse blow, but none the less, it IS a possibility.
Last edited by RamAirRckt; Sep 29, 2013 at 04:01 PM.
Thread Starter
Driver School Candidate
Joined: Dec 2009
Posts: 2
Likes: 0
From: SA
I did replace the whole fuel pump assembly. It fire up first turn of the key. The only thing on the assembly apart from fuel pump is a fuel filter ,a fuel gauge float and the regulator. I am curious to find out what the fault is. But how to check the regulator. I connect power to the top of the assembly but no go. Bought a new regulator and will try that. Let you know if that is the fault.
PS . If I took it to a Lexus dealer it would have costed the same as a new engine!!!!
PS . If I took it to a Lexus dealer it would have costed the same as a new engine!!!!
Thread
Thread Starter
Forum
Replies
Last Post
