i need to adjust my tps but not sure how, i couldnt find a good search result. anyone know or have a link about it?

 

Use the "and" feature when searching, it gives much better results! I searched and found this for ya

http://home.rmci.net/panther/tps.htm

 

ive heard by doing it this way that there is a chance of frying the ecu? is this true in any way?

 

i have some question about this tps adjustment method

my friend's turbo 2 87 is having a hesitation problem when WOT, and backfires, pretty sure it's the tps problem, caz we changed spark plugs and didn't make much difference

anyway, i just wanna know that when u are testing, make sure the engine is warm, and using ohm meter to check at different throttle position, how am i supposed to mess with the tps sensor with the intercooler on top??

or what it means is just warm up the car and then we can turn it off and just put keys in the ignition, and just pressing the gas paddle the tps will sense it???

also do mazda dealer sell the check light unit???
how much??

 

yeah, thats the right way...or instead of pushing the gas pedal just move the metal piece that touches the sensor and causes it to go in and out. that will simulate pulling on the throttle cable...

 

Dunno where you heard that. It's straight out of the FSM so it's how Mazda do it.

 

The engine has to be warm so that the themowax (part of the cold idle system) isn't holding the throttles open a bit. Once it's at operating temp just shut it off and pull the intercooler.

Just make one, I thought the instructions were in the link.

 

You should tell us what kinda FC3S you got...&nbsp It's slight different for non-turbo versus turbo and 1986-1988 Zenki versus 1989-1991 Kouki models...



-Ted

 

About that talk of the test lights frying the ECU. Its true if you use the wrong bulbs. If you follow the instructions in the link mentioned above you'll have no problem. Go to search and look for RXSTER. He had that problem, I believe and he describes what happened. I'm pretty sure it was RXSTER anyway. The test light assy can be bought from MAZDATRIX, but you can buy the parts from Radio Shack for less than five bucks. Its just two leds. When you tire of using it as a tps setting tool, you can use it to download or interrogate the ECU on 86-88 cars. There are much better ways of setting a tps than the lite assy.

 

i have an 88 n/a.

"To set the TPS using the test lamps you need two things: Two LED's and a couple of spade connectors. I got my LED's at radio shack for about 3 bucks. The spade connectors you need are 1/4". The LED's that you buy should come pre-wired each with a black and red wire. (They should be 12 volt ones.) All you do is tie the two red wires together and put a spade on the end. Then put a spade on each of the black wires. Done!" ..i read from RXSTER that it could fry the ecu if you use to strong of led's. are 12volt led's to strong?

 

12v LED's should work fine.


-Ted

 

Like what? I tried setting it to 1 k-ohm with a DMM and it was worse. I'll stick to what Mazda does.

 

When you get thru with the tps, you might try this url for checking the ECU codes: http://home.rmci.net/panther/ecu_codes.htm
And the remark I made earlier about another way of setting the tps is straight fwd, if you have a good tps. Just fully warm the engine and then shove the positive lead of your meter in the back of the green and red wire on the tps plug. With the key on the meter should read one volt. If it does not, turn the screw until it does. No electrical plugs removed in this procedure. If you suspect a bad tps, then by all means use the ohm method in the factory manual. This site http://home.rmci.net/panther/ has a lot of useful information for your car.

 

1 k-ohm (1000 ohms), not 1 volt.

 

what part of the FSM would the tps be in?

 

Should be 4a for N/A. 4b for turbo

 

NZCONVERTIBLE......That was no typo. Screw ohms and taking the darn plug apart. Just turn the key to on with a hot engine and shove the darn positive lead into the back of the green wire with a red stripe. Then adjust the screw until the meter reads ONE VOLT. Look at your fsm under CONTROL UNIT. What is the ECU looking for/?????? Its looking for ONE VOLT give or take. Set in my ways. Don't believe in making a easy job difficult.

 

i just got done adjusting mine..that was rather easy. took maybe 2 min at the most. i used the voltometer and disconnected the plug, stuck the black plug in the black wire and the red with the green and red strip and adjusted the screw and now it runs so much smoother. thanks guys.

 

ok well i'm having a hard time with this as well yesterday i tried to adjust mine with an ohm meter and that did not work very well could only get about .06 on a 20k ohm scale. i was useing the plug on the passenger fender the green one first is this the correct plug because it wasn't pluged into anything? or maybe that's my problem, any one please

james

 

thats the wrong plug for starters. you want to unplug the tps and use the end of the tps plug that you unhooked. do you know where that is? and i dont know what your trying to get it at but you want it at 1.00.

 

I hope you guys know that volts are ohms are two entirely different things.

The recommendations are 1k-ohm, if you're using my method.
The Mazda Factory Service Manual recommends 0.95VDC - so you're wrong about 1.00VDC.




-Ted

 

Just know whats in my 87 manual under CONTROL UNIT. Says approx 1v in my book bought from MAZDATRIX. Could be the .95v is somewhere else in the book. Never seen it. What page??? Don't really have any doubt thats whats in your book, which might be something other than what I'm looking at. Don't really care how anyone else sets theirs. I do see the merit in using the ohms method if your looking for faults in the tps. I even use the lites I bought from MAZDATRIX for amusement and to get some use out of it for the money I spent on it. Wish I had seen the article on building a lite assy for checking ECU codes before buying the lite assy. Bunch cheaper. http://home.rmci.net/panther/ecu_codes.htm