OK not really but i really do need help. I'm a hard headed guy when it comes to repairing cars. I tend to think i know everything and don't need any help from anybody anything, but CL please please im calling out to you guys NOW..

I have an 01 GS430 with 130k.. Drove it last year for the most part with a check engine light, P0135 was code ( o2 Sensor Heater Circuit Malfunction Bank One/Sensor One ).. Replaced it with a new denso o2. Went to e-check and it didn't pass. HC and CO levels were too high. 91.0 reading, 68.0 limit for HC and 3.11 reading and 0.38 limit CO. Went back did it again and it read even higher now. Drove home pissed and after a few miles CEL came back on. Now its reading P0125 ( Insufficient Coolant Temperature For Closed Loop Fuel Control ).

I went ahead and replaced the thermostat and spark plugs. Aftermarket thermo and DENSO irduim spark plugs with .40mm pre-gap. Filled it back up with toyota red coolant 50/50. Prestone was in there before and i should of flushed it out and not mix toyota red with prestone. I did as i am going to replace it later on down the road when the weather gets warmer here in OHIO. Its been 2 months since i started the car up. Started the car up, sound, ran, and looked fine. Smooth idle, quiet sound purrrrss.. Let it warm for about 10 mins and backed it up. Car died. Started it back up and now the car runs really rough, can barely start, try to move it back to the garage and it was struggling. Gave it 50 percent throttle and moves so slow. VSC and PWR light is on. CEL is on reading P0100 ( MAF or VAF ) now.. I dont know.. ready to burn this thing.. HELP PLEASE

oh i found this too.. is this the MAF? looky the green wire is not connected to anything and sensor looks like its been tampered with.. HELP get my baby moving once again.

SRY for the long post. i needed to VENT!

 

First of the MAF wiring is wrong are you the orininal owner? Did you have your MAF replaced brfore?
Looks like your MAF was replaced and they just cut the wires & retap3ed it bu why they would alter the wiring.
Do youve other engine mods? Thet connected #2wire to #5 lord know why??

 

Good luck, my car was acting up tha same way and it was that it wasnt pluged in all the way, so i think gillexus is right with the wiring, anyways good luck

 

no im not the original owner.. im like the 4th. yeah i was thinking the MAF was replaced and they did a hack job.. no mods.. and what do u mean when they connected #2 to #5? i dont know why.. and that green/light wire is just hanging there.. it was all black taped up and i took it out becuz it looked weird. and this is what i saw.. any ideas on the wiring? anyone?

 

well before you set on fire, send me the WALD kit just kidding man, hope you get everything worked out..

 

what he said... i want dibs on the kit

but yeah try rewiring the MAF connector.. looks like garbage right now, take the pins out the connector then resolder new wires to it

 

WaldGS430: I am sorry to hear about your misfortune. But please bare with it as you sure have a beautiful car on your hands, we can work this out.

Blue: If you notice, #2 looks like it's going into the #5 spot, but it's actually not, it just gets lost, study it close.
Green: Unless your running some crazy standalone, I am not sure why this wire is open.
Red: I can't even tell whats going on here, but it looks as if they come into a clump, and then are taped, I would open that junk up, strip the plastic wiring cover back, and re-wire up the MAF.

Here is a picture of mine.



Hope this gives you a better idea of whats going on with the wiring, let me know if you need any help, be glad to help you out and get that beaut no the road.

 

on a side note, u might wanna put some tape or foam across that heatshield where your wires lay so you dont rub them and splice them with that metal it looks a tad sharp

 

Keep in mind that I took a picture to show him the wiring, as the plastic cover is pulled back and the electrical tape removed in order to not would cover the wiring.

 

gotcha. i didnt know if you had that just laying in there bare as the picture showed, if you didnt i would cover up the exposed metal where it contacts your wire

 

Oh man your car is totally fubar, better sell it to me... Jk send me you email and Ill send you an EWD for the MAF.

EWD=electrical wiring diagram.

 

hey sry i didnt response earlier. I've bz with a job transfer and just been all bz'd up.. but my email is peter@autolotmanager.com.. thanks

 

but im back on the post... ill be back in town the 25th and hope to get the car back on the road so i can trailer it down to TN with me...

 

thanks.. soon as i get back i will try that. Hope it turns out ok

 

well, did you set your car on fire or part it out? I've got the p0135 heater circuit issue too, searched and saw this.