Won't stay running gs300
02-28-18, 07:14 AM
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Won't stay running gs300
Bought an 01 gs300 with a bad throttle motor. Had all the codes cone up, tps, pedal sensor, and throttle motor malfunction. I found a good one on eBay, so I just changed the whole throttle body. Anyway, car fires up, no codes, but will only idle for about 3-4 min. If I try to give it gas, it hesitates, and pops through the intake. I have replaced the crank sensor, cam sensor, timing belt, fuel pump, etc. car is in really good shape, this is driving me crazy. Timing is dead nuts, and like I said, no codes. If I pull the batt cable off, wait 10 min, it will start again, but does the same thing. Anyone have a clue as to what's going on???
02-28-18, 07:55 AM
#2
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Some basic info on the car please.....Mileage, service done, You need to give the car a little more time to generate the codes instead of disconnecting the battery and restarting. Let the car run....when it dies.....leave it and go back to it later. Try to restart and then check for codes.
02-28-18, 03:29 PM
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Sorry, new to all this stuff
The car has 212 thousand miles. New timing belt, new plugs, coil packs, and wires. New crank sensor, new can sensor. New igniter, new fuel pump. The people I purchased the car from also took very good care of the car, and basically threw a bunch of parts at it trying to fix the problem. When I replaced the throttle body, I thought I had it in the bag. The pedal is now working, and all the codes associated with the old throttle body gone. I’ve let the car run, until it dies anyway,and left the battery cable on a few times, and no codes. It will not start again after doing this. Let it set over night even. I’m a pretty good wrench, but when it comes to newer cars, computers, etc, not so much. Sorry again for posting 2 threads, I’m an idiot. Lol. Any suggestions would be greatly appreciated! Thanks!!
02-28-18, 06:42 PM
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I don't, but I can get one. I have also wondered if the ecu had gone bad. Ive also heard that is rare with Toyota. Think it would be worth it to try? If I take the car to Toyota, I'm going to blow a lot more than buying a used computer. They want 150 bucks an hour to diagnose. Have you heard of this kund of problem before? Thanks for the help by the way!!
02-28-18, 08:13 PM
#7
Have you've checked the fuel pump relay? Its by the battery fuse box. Also these cars have a fuel pump ecu in the trunk. It's behind the back seat on your left facing the front. You could check if the relay is on fire while it's started. I think the ECU operates in 3 stages. You can find more information by searching the subject.
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02-28-18, 08:50 PM
#9
I had a bad MAF on my G400. It would back fire through the intake. It wouldn't throw a code either. The car would just run like crap on the freeway. Do you have a OBDII scanner that can see live data?
Last edited by MikeFig82; 02-28-18 at 09:06 PM.
02-28-18, 09:16 PM
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I thought that too. By the way, all or the new parts I listed where put on by previous owner, except the cam sensor, which was fun by the way. Lol. While I had the intake off, I checked all the coil packs, and wires. Everything’s where it’s supposed to be.
02-28-18, 09:35 PM
#11
I would just check the obvious stuff again. Clean the MAF with alcohol if you don't Have CRC MAF cleaner. Check the air filter to see if it's flowing well. Fuel pump could have a kink on the fuel regulator line on the module, or worse it could be disconnected.
10-19-18, 05:27 PM
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Bought an 01 gs300 with a bad throttle motor. Had all the codes cone up, tps, pedal sensor, and throttle motor malfunction. I found a good one on eBay, so I just changed the whole throttle body. Anyway, car fires up, no codes, but will only idle for about 3-4 min. If I try to give it gas, it hesitates, and pops through the intake. I have replaced the crank sensor, cam sensor, timing belt, fuel pump, etc. car is in really good shape, this is driving me crazy. Timing is dead nuts, and like I said, no codes. If I pull the batt cable off, wait 10 min, it will start again, but does the same thing. Anyone have a clue as to what's going on???
04-09-19, 10:11 PM
#14
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Bought an 01 gs300 with a bad throttle motor. Had all the codes cone up, tps, pedal sensor, and throttle motor malfunction. I found a good one on eBay, so I just changed the whole throttle body. Anyway, car fires up, no codes, but will only idle for about 3-4 min. If I try to give it gas, it hesitates, and pops through the intake. I have replaced the crank sensor, cam sensor, timing belt, fuel pump, etc. car is in really good shape, this is driving me crazy. Timing is dead nuts, and like I said, no codes. If I pull the batt cable off, wait 10 min, it will start again, but does the same thing. Anyone have a clue as to what's going on???
08-26-21, 01:43 AM
#15
How Did u guys go fix it ?
So i just got/ bought a gs300 will start sort of . Idle sort of . If i let it go till it dies it only puts heat into 3 and 4 header pipes . Checking the coils it seams as thought it drops the coil for 1 and 6 as soon as u release the key and just worked out it drops the injectors for 2 and 5 also.
so i have tried replacing ECU , coil., ingnitor ,have checked fuel pressure and timing also there are no codes
Any help ?
so i have tried replacing ECU , coil., ingnitor ,have checked fuel pressure and timing also there are no codes
Any help ?
Last edited by Xenith; 08-27-21 at 05:11 PM.