Last week I had the spark plugs and wires changed. My baby ran so good. I went to the store and then it would not stay started. Next day, added fuel and sprayed starter fluid to make it crank..it did. Went home next morning no start. Read the threads..bought a fuel pump. Still no start. Never had a problem with my car. Checked fuses, took cables off reconnected still nothing. Checked pump we can hear it. Unhooked hose you can see gas streaming. I want to give up on it cause right now I just cant afford to keep buying parts speculating. It has never not started. Did not have this problem till we changed the plugs and wires. I hate we did ourselves now..I am sick..

 

What year ,model is your GS? Check for a bad starter relay. Check condition of your battery and connections. I suggest you check the coils, spark wires and such, something might have got knocked loose.

 

Hi, my apologies..its a 2001 GS300. I will check it out tmrw. We went back over everything and it stayed on longer today..but it died out.

 

Is there a way to check the relays? We switched them but I am not sure ? By the way thank you for the reply. I appreciate it.

 

Any check engine lights? When you say it won't start can you be more specific. Does it try to crank and just won't start? Does it try to crank and then starts clicking like a low battery?

I know these things get frustrating but try not to just throw parts at it until you're more certain about what the cause could be. Worst case, do you have a good local mechanic that can take a look at it?

 

Hi, it tries to start but wont stay on. Today I am going to have the guy who changed my plugs and wires to recheck them. Because I just dont understand how before no problems..now It won't stay started. Yes engine lights on but I don't remember security lights. I will have to pay more attention today.

 

Thank you Caverman.

 

I just finished changing my plugs, coil packs, and coil pack clips last night. I decided to test it and I thought I could leave off the air hose between the air box and throttle body. Well, I quickly learned I couldn't. It would start for maybe 1 second and then die. I put the hose on and it started up perfectly.

So, if that sounds like something similar I would make sure that main hose is connected correctly. Also there is a PVC hose that goes from that air intake hose that I was talking about over to the valve cover. Mine is missing a chunk right where it connects to the PVC and seems to be a common issue at this age. My missing piece is on the underside so you can't really see it without taking the hose off. It's possible yours is the same although I would think it would start but throw a check engine light about a vacuum leak. Maybe enough of that hose is missing that it's sucking in way too much air. I just posted about that hose so you can look at up.

My next thought is maybe the MAF? The sensor that is on the air box that monitors the air flow. Maybe that is needing to be replaced. I would troubleshoot that more before you just jump out and buy one of those.

 

I am pretty sure I doubled checked all the hoses. But today in a few I will try this thng again..I feel it is something simple we overlooked.

 

Well had It towed to a local mechanic my dad knows...and they said my computer is gone. I don't believe it. But who am I to question his expertise.

 

Sounds like someone that doesn't know what the real problem is so they are trying to toss a part at the problem in hopes that it fixes it even though it will be your dime if it doesn't fix it. Too much of a coincidence that it was running fine until you work on the plugs. Now I can see where it could possibly be an issue with the wiring harness some how. With the age of these cars the wires are super brittle and my wires even had slight corrosion on them inside of the wire casing. In other words, even when I trimmed back my wires and stripped them to solder the new coil pack clips the I had to use a wire brush to clean off the corrosion of the wire.

 

I know right...I want to cry now. Thanks alot for all your input. I am done trying and now I know my car is a lost cause. I really liked my car it was a gift when I returned from China teaching. Thanks again..

 

it is the ECU Bro if u look at my Thread I had the same issue that u, try this and all see how rite I aim, go disconnect the battery negative or positive does not matter for like 15 sec, connect for sure the factory alarm is goin to sound just disarm and crank the car I bet u, I will start ok drive around, and then turn of take the key out and back on again, and for sure is not goin to crank, and if u do the same is goin to work, so button line yes it is your ECU and thank u have a OEM one, my car is full mod project and I have a Tom's ECU is around 1k so feel better about yours, to bad I just read your thread now I would have save u money, my ECU now is on a friend electrical he repairs amps subs tv and stuff like that and he working on it, so u can check how much is yours and if u know some guy that fix tv amplifiers and stuff take it to them maybe they can fix it for u, normally is some integrate on the ECU that blows and can be change, this is my https://www.clublexus.com/forums/gs-...ery-again.html

 

on this case men yes that local mechanic is the right one, even u know wat I prefer local mechanics that dealerships and place like does they are just a ripe off money u say how much coincidence that was running fine until work, but guess wat EVERYTHING works fine until they don't lmao and in this case gs the gs have a thing with the eco been to close the radiator and tents to get humidity and that why they get mess up

 

Can soneone help with these codes..P0174 , P0171, P0141 and P0161.P0300 these were thw codes before my trouble began and the work was started. Thanks