No crank no start
Thread Starter
10th Gear
Joined: May 2025
Posts: 11
Likes: 0
No crank no start
Hey guys, new here!! I have a red 2007 gs350 awd. I been looking here for some help and I can’t find anything yet.
so this is what’s going on, I have power, fan turns on, dash lights and radio turns on, but when I try to crank, no crank, I change the starter and fuel pressure sensor so fast, I got a new neutral position sensor that’s not installed yet. I checked all the fuses and they are not burned. The car don’t have any codes bc it has been sitting with no power for a while.
any ideas guys?? Thanks in advance!
so this is what’s going on, I have power, fan turns on, dash lights and radio turns on, but when I try to crank, no crank, I change the starter and fuel pressure sensor so fast, I got a new neutral position sensor that’s not installed yet. I checked all the fuses and they are not burned. The car don’t have any codes bc it has been sitting with no power for a while.
any ideas guys?? Thanks in advance!
7th Gear
Joined: Mar 2025
Posts: 7
Likes: 1
Solution to your problem
I gotta stress this as much as possible haha. I had this EXACT issue. My mechanics couldn’t figure it out, after tons of my own personal research I figured out it’s that fuel pressure sensor has failed.
I can almost guarantee that’s your problem!
$30 part
I can almost guarantee that’s your problem!
$30 part
7th Gear
Joined: Mar 2025
Posts: 7
Likes: 1
wait, just saw the end of your post lol my bad! I wonder what it could be. Spark plugs possibly? Mine had gone bad because of my fuel pressure sensor failing
Driver School Candidate
Joined: Feb 2025
Posts: 22
Likes: 3
From: California
Come on guys. A no crank situation isn't going to be caused by a fuel pressure sensor or a crankshaft position sensor. It's going to be caused by something in the starting system like a bad battery, poor battery cable connections, a starter relay, a security system glitch, something like that. This person sounds like he needs to take the car to a mechanic.
Rookie
Joined: Sep 2024
Posts: 44
Likes: 3
No start no crank
Hey guys, new here!! I have a red 2007 gs350 awd. I been looking here for some help and I can’t find anything yet.
so this is what’s going on, I have power, fan turns on, dash lights and radio turns on, but when I try to crank, no crank, I change the starter and fuel pressure sensor so fast, I got a new neutral position sensor that’s not installed yet. I checked all the fuses and they are not burned. The car don’t have any codes bc it has been sitting with no power for a while.
any ideas guys?? Thanks in advance!
so this is what’s going on, I have power, fan turns on, dash lights and radio turns on, but when I try to crank, no crank, I change the starter and fuel pressure sensor so fast, I got a new neutral position sensor that’s not installed yet. I checked all the fuses and they are not burned. The car don’t have any codes bc it has been sitting with no power for a while.
any ideas guys?? Thanks in advance!
Thread Starter
10th Gear
Joined: May 2025
Posts: 11
Likes: 0
I just took it off the other day and it’s a paint to try to pull it off, take a torch and melt it and take a pry bar and pop it off, it’s really soft aluminum, it will melt like butter
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Thread Starter
10th Gear
Joined: May 2025
Posts: 11
Likes: 0
Come on guys. A no crank situation isn't going to be caused by a fuel pressure sensor or a crankshaft position sensor. It's going to be caused by something in the starting system like a bad battery, poor battery cable connections, a starter relay, a security system glitch, something like that. This person sounds like he needs to take the car to a mechanic.
Driver School Candidate
Joined: Feb 2025
Posts: 22
Likes: 3
From: California
I am going to get a new starter relay bc I noticed it’s not the Toyota purple, looks like it’s an aftermarket one. The key works to lock and unlock when’s it has juice so I don’t think it’s the immobilizer, I changed the starter, but I’ll look into everything you mentioned . Thanks
have you made absolutely certain that your ground system is intact? If not, that is your problem.
An easy way to rule out poor electrical grounds is to use a set of jumper cables to create temporary new grounds.
Attach both the red and black clamps at one end of the cables to the negative battery post. Then connect the red and black clamps at the other end of the jumper cables to good metal on the engine and body. That way, no matter what grounds already exist on the car, you will be providing new, known good grounds.
If you notice a difference in how the vehicle performs or the electronics act, you need to find where your ground path is compromised. If it makes no difference at all, grounds are probably not your problem and you go in a different direction.
7th Gear
Joined: Mar 2025
Posts: 7
Likes: 1
Come on guys. A no crank situation isn't going to be caused by a fuel pressure sensor or a crankshaft position sensor. It's going to be caused by something in the starting system like a bad battery, poor battery cable connections, a starter relay, a security system glitch, something like that. This person sounds like he needs to take the car to a mechanic.
The fuel pressure sensor is linked to the ecu in a 5 volt circuit. When the sensor is bad, the ecu doesn’t get a feedback from the sensor causing the 5v circuit to not be able to fully loop. The ecu then goes into a sort of limp mode, causing the car the car to literally not crank over at all. When you plug into obd2 you can’t even get a reading from the ecu. Push start only turns on accessories and the fan under the hood but NO crank
7th Gear
Joined: Mar 2025
Posts: 7
Likes: 1
The starter relay is cheap enough so that's not a bad place to start. But before I spent any more money I would simply bypass the starter relay and send power to the starter directly. If it cranks, you know it is something on the backside of the starter relay and not on the front side.
have you made absolutely certain that your ground system is intact? If not, that is your problem.
An easy way to rule out poor electrical grounds is to use a set of jumper cables to create temporary new grounds.
Attach both the red and black clamps at one end of the cables to the negative battery post. Then connect the red and black clamps at the other end of the jumper cables to good metal on the engine and body. That way, no matter what grounds already exist on the car, you will be providing new, known good grounds.
If you notice a difference in how the vehicle performs or the electronics act, you need to find where your ground path is compromised. If it makes no difference at all, grounds are probably not your problem and you go in a different direction.
have you made absolutely certain that your ground system is intact? If not, that is your problem.
An easy way to rule out poor electrical grounds is to use a set of jumper cables to create temporary new grounds.
Attach both the red and black clamps at one end of the cables to the negative battery post. Then connect the red and black clamps at the other end of the jumper cables to good metal on the engine and body. That way, no matter what grounds already exist on the car, you will be providing new, known good grounds.
If you notice a difference in how the vehicle performs or the electronics act, you need to find where your ground path is compromised. If it makes no difference at all, grounds are probably not your problem and you go in a different direction.
this is good advice bro, but when the fuel pressure sensor has gone bad the ecu protects itself from cranking by putting out decreased or no voltage to the starter relay so the car purposefully doesn’t start. My mechanic checked every ground, fuse, relay etc etc etc and even tried to bypass the starter relay. Still no dice
Driver School Candidate
Joined: Feb 2025
Posts: 22
Likes: 3
From: California
this is good advice bro, but when the fuel pressure sensor has gone bad the ecu protects itself from cranking by putting out decreased or no voltage to the starter relay so the car purposefully doesn’t start. My mechanic checked every ground, fuse, relay etc etc etc and even tried to bypass the starter relay. Still no dice
Last edited by SoCalSpyder; May 12, 2025 at 10:24 AM.
7th Gear
Joined: Mar 2025
Posts: 7
Likes: 1
if if that is true, and I have no reason to doubt you, that's the first I've ever heard of a fuel pressure sensor preventing a crank condition. But now that I've read your post and the one above it, I do see that seems to be the case. Wonder if the OP has tried hitting the starter with direct 12 V to make sure that it actually has the capability to spin?
And yeah definitely it’s not a common problem in other cars, it’s just a weird one in ours. That’s the reason my trusted mechanic thought my ecu was toast. Took it to a repair shop (I can’t find a replacement since mines Jdm) and they found nothing wrong. Next thing I knew it was the fuel pressure sensor at the end of the day 😂
Driver School Candidate
Joined: Feb 2025
Posts: 22
Likes: 3
From: California
I tried with mine haha, no issues with starter. I’d put in a new battery, new spark plugs (which were toast because of the fuel pressure sensor apparently) and still nothing. And that was on top of the FULL electrical assessment by my mechanics haha.
And yeah definitely it’s not a common problem in other cars, it’s just a weird one in ours. That’s the reason my trusted mechanic thought my ecu was toast. Took it to a repair shop (I can’t find a replacement since mines Jdm) and they found nothing wrong. Next thing I knew it was the fuel pressure sensor at the end of the day 😂
And yeah definitely it’s not a common problem in other cars, it’s just a weird one in ours. That’s the reason my trusted mechanic thought my ecu was toast. Took it to a repair shop (I can’t find a replacement since mines Jdm) and they found nothing wrong. Next thing I knew it was the fuel pressure sensor at the end of the day 😂
I would find someone who has access to a proper scan tool and the diagnostic flow chart from Lexus that will tell him exactly what the ECU is seeing or not seeing.
If you are telling us that you are supplying power directly to the starter solenoid feed circuit at the starter relay connection and you are still not getting a crank condition with a starter that you know is good, you have a broken wire somewhere between the starter relay and the starter or a bad negative or positive cable/connection.
or a seized engine.
Last edited by SoCalSpyder; May 13, 2025 at 12:36 AM.