Won't Start

Irish_Mechanic · 01-14-2008, 05:05 AM

Quote:

Originally Posted by mkiiisupra

Not that running on the faulty tps reset the timing just that the timing was set based on a uncalibrated tps

gotcha. ignition timing is based on factory perameters. most cars will read the degrees past TDC the cylinders are, and a certain amount of degrees past that the spark plug will fire. you'd have timing trouble with a C.rank A.ngle S.ensor, but the T.hrottle P.osition S.ensor is gonna cause slight sluggishness in most cars. My Summit had a faulty TPS and it just didnt accelerate properly. it'd drive okay, and just fine at WOT, but never did anything to keep the car from running.....

My money is not on the TPS being the source of all that evil you're experiencing. thats just my professional opinion... i might check resistance on the sensor along with others....but i wouldnt put my money on it.

mkiiisupra · 01-14-2008, 05:17 AM

i see what you are saying, my car does have sluggish acceleration, I attributed that to the uncalibrated TPS and knock sensor wiring being faulty. After doing the work on both of these parts the codes didnt resurface.

I am w/in the resistance according to the TRSM for my TPS so i imagin it still works... however that was the first time i had ever solderd ( for the knock sensor rewire) and the only time i had ever used a multimeter ( to check the resistances on the TPS to recalibrate)

I read somewhere that the timing was based off the TPS not sure where. Perhaps it isnt not really sure, what you are saying makes alot of sense.

If i get home after work and pull off the wiring to the sensor and it starts up fine... does that mean faulty TPS?

My thoughts are New TPS 150$, Checking the timing 50$. lol so hope its the timing

Irish_Mechanic · 01-14-2008, 07:32 AM

you need to have the motor running and at normal operating temperature to properly check timing. just keep that in mind......

pep-boys had a light for 20 bucks, so hopefully you can find one as cheap.....

mkiiisupra · 01-14-2008, 07:37 AM

hmmm ill looks, hopefully i can find one that cheap, advanced auto has it for 50

Do i need advanced timing/ inductive? or it doesnt matter?

01-14-2008, 05:17 AM	#2
mkiiisupra Lexus & 550's Join Date: Sep 2007 Location: Las Vegas, NV Posts: 570 Blog Entries: 1	i see what you are saying, my car does have sluggish acceleration, I attributed that to the uncalibrated TPS and knock sensor wiring being faulty. After doing the work on both of these parts the codes didnt resurface. I am w/in the resistance according to the TRSM for my TPS so i imagin it still works... however that was the first time i had ever solderd ( for the knock sensor rewire) and the only time i had ever used a multimeter ( to check the resistances on the TPS to recalibrate) I read somewhere that the timing was based off the TPS not sure where. Perhaps it isnt not really sure, what you are saying makes alot of sense. If i get home after work and pull off the wiring to the sensor and it starts up fine... does that mean faulty TPS? My thoughts are New TPS 150$, Checking the timing 50$. lol so hope its the timing __________________ 1990 Toyota Supra Turbo A/T ------------------------------------------------ Questions about oil? take a look http://www.supramania.com/aehaas/

01-14-2008, 07:32 AM	#3
Irish_Mechanic Intake Join Date: Jan 2008 Location: Lancaster PA Posts: 45	timing you need to have the motor running and at normal operating temperature to properly check timing. just keep that in mind...... pep-boys had a light for 20 bucks, so hopefully you can find one as cheap.....

01-14-2008, 07:37 AM	#4
mkiiisupra Lexus & 550's Join Date: Sep 2007 Location: Las Vegas, NV Posts: 570 Blog Entries: 1	hmmm ill looks, hopefully i can find one that cheap, advanced auto has it for 50 Do i need advanced timing/ inductive? or it doesnt matter? __________________ 1990 Toyota Supra Turbo A/T ------------------------------------------------ Questions about oil? take a look http://www.supramania.com/aehaas/ Last edited by mkiiisupra; 01-14-2008 at 07:40 AM.

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