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Re: Idle Question (Again) [Re: 4Crawler] #427400 04/01/04 02:13 AM
Joined: Jan 2003
Posts: 282
Toy Story Offline
Mudrunner
Also, some auto-ranging meters can't be used to test a TPS. They will interpret the higher resistances as infinity.

I condemned a TPS as bad with a very expensive Fluke auto-ranging meter only to later test it a $15 Wal-Mart selectable range meter and found it was fine. Rather expensive mistake!


85 Toyota SR5 Xtra Cab P/U
Re: Idle Question (Again) [Re: Esquire812] #427401 04/01/04 02:17 AM
Anonymous
Unregistered
Quote
Where in the hell you been??? Other day was thinking about ya and realized you aint been on here in some time.


OK GOD LOL!
I still come by and lurk to just to read your threads, You really crack me up!

Been really swamped at work and yard work when it gets cool here Yard work becomes the priority. What kind of yard work can last 6 months, Try digging a pool size sunk in patio by hand in the Arizona concrete I mean dirt.

Any way Time to show my Ignorance!

It should not be an AC problem because it has not worked in three years! Yeah, some of us do go with out AC here. (Some people think I'm a tard)

Re: Idle Question (Again) [Re: 4Crawler] #427402 04/01/04 02:23 AM
Anonymous
Unregistered
Quote
Quote
Now that pesky TPS. I've attempted the adjustment about 3 times, (even bought a new one). Used Roger Browns write up.

Maybe I need yo go back and mess with it again Looks like I really need to learn what ohm setting to use on my ohm meter. <img src="/forums/images/graemlins/rolleyes.gif" alt="" />


Well, since you want to measure at most 10,000 ohms (10K ohms) you need to set the meter on a range that will measure at least that much. So 20,000 is greater than 10,000 so that would be good.

Meters vary in how they show infinite resistance, some have a sidewase "8" for infinity, some flash, etc. To see what your meter does, set it to ohms (any scale) then hold one probe in each hand (i.e the tips apart) and see what the meter says. You can also verify the meter is working properly by touching the tips of the probes together, it should read "0.00" or something like that, short circuit.

One suggestion you might consider is head over to Radio Shack and pick up a resistor or two of some common vallues, like 1000 ohms (1K) and then you can practice taking readings with it. For example on a 200 ohm meter scale, it would read infinite or over-scale, on 2000 ohm scale, it would read 1000 or 1.000 (if it reads in K-ohms), etc. Since you know what resistance it should be, you can verify that you are using and reading the meter properly.

Resistance is probably the hardest thing to measure, if the probes don't make good contact, or the surface is dirty or you have the wrong scale or plug the probes into the wrong terminals on the meter, you'll get a reading of some sort, but its likely to not be the actual reading.


ROGER
Great to hear from ya!
I have a Sunpro Mult-Meter, Measures 2000K, 200K, 20K, 2K, 200, and ->+. I have no clue what "->+" means.

Great Idea on the radio shack purchase. Looks like I'm about to be schooled.

Looks like at the 20K setting, Infinity is "1_."

The funny thing is, I'm still getting 19.5 Miles per gallon

Thanks

Last edited by kozaz; 04/01/04 02:28 AM.
Re: Idle Question (Again) #427403 04/01/04 02:38 AM
Joined: Aug 2001
Posts: 2,941
DRTDEVL Offline
J
Roll Me Over
*****
Quote
The funny thing is, I'm still getting 19.5 Miles per gallon

Thanks

--------------------
87 22RE 5sp Xtra Cab
33's, 4.88's...


Uhh, that's what I get in my '87 4Runner with 4.10's and 33's...

Maybe the EB stuff has something to do with it??? If you ever get this sorted out, you might want to check into EB's stuff. I can drive 2 hours to the wheelin' spot, wheel for a few hours, drive home, fill the tank, and check the readings. I will still be at 19.5 MPG. I wonder what my hwy mileage is these days?


"A young man who does not have what it takes to perform military service is not likely to have what it takes to make a living." - John F. Kennedy

Proud owner of an 88 Montero (with a blown engine).
Re: Idle Question (Again) [Re: DRTDEVL] #427404 04/01/04 02:44 AM
Anonymous
Unregistered
Quote

Uhh, that's what I get in my '87 4Runner with 4.10's and 33's...


Yes, but when I bought my truck, it was getting 11 mpg. So it has been a drastic improvement!

Re: Idle Question (Again) #427405 04/01/04 03:45 AM
Joined: Jan 2000
Posts: 12,153
4Crawler Offline
Web Wheeler
*****
Quote
I have a Sunpro Mult-Meter, Measures 2000K, 200K, 20K, 2K, 200, and ->+. I have no clue what "->+" means.

Great Idea on the radio shack purchase. Looks like I'm about to be schooled.

Looks like at the 20K setting, Infinity is "1_."


20K range will measure from 1-19,999 ohms, probably displayed as 0.001 up to 1.999 assuming a 3-1/2 digit meter.

I would guess the last setting is for checking diodes. With a diode, you need a relatively high voltage (1.5-2.0 volts or so) to trigger the diode into conducting mode. My meter shows you the forward voltage drop of the diode in this mode. If it reads infinity, then the diode may be in backwards, if its infinite both ways, its bad (or like some LEDs, needs more than 2.0 volts to conduct).

Re: Idle Question (Again) [Re: 4Crawler] #427406 04/01/04 04:13 AM
Anonymous
Unregistered
[quote
20K range will measure from 1-19,999 ohms, probably displayed as 0.001 up to 1.999 assuming a 3-1/2 digit meter.

I would guess the last setting is for checking diodes. With a diode, you need a relatively high voltage (1.5-2.0 volts or so) to trigger the diode into conducting mode. My meter shows you the forward voltage drop of the diode in this mode. If it reads infinity, then the diode may be in backwards, if its infinite both ways, its bad (or like some LEDs, needs more than 2.0 volts to conduct). [/quote]

Ok Bare with me, I could really use the teaching here!

On your website TPS Adjustment for 85-88 year 4cyl.
Test 1 VTA-E2 says 200-800 Ohms My Meter setting should be set to 20K (1*.*** Reading)
When I measure Test 1 My reading (if good) should be 00.500?

Test 2 IDL-E2 says <2.3K My reading (if on 20K) should be Less than 02.300?

Test 3 IDL-E2 says Open My reading will be (1*.***).

Test 4 VTA - E2 says 3.3K-10K My reading should be in the middle.

I think the last time I did this I tried to get TEST 1 to 500 ohms like you recommended.

I will have to go back out there tommorrow and attack it.

Thanks 4Crawler for your patience! If my reply is wrong in any of the readins please correct me!

Re: Idle Question (Again) #427407 04/01/04 04:43 AM
Joined: Jan 2000
Posts: 12,153
4Crawler Offline
Web Wheeler
*****
Quote
Ok Bare with me, I could really use the teaching here!

On your website TPS Adjustment for 85-88 year 4cyl.
Test 1 VTA-E2 says 200-800 Ohms My Meter setting should be set to 20K (1*.*** Reading)
When I measure Test 1 My reading (if good) should be 00.500?

Test 2 IDL-E2 says <2.3K My reading (if on 20K) should be Less than 02.300?

Test 3 IDL-E2 says Open My reading will be (1*.***).

Test 4 VTA - E2 says 3.3K-10K My reading should be in the middle.

I think the last time I did this I tried to get TEST 1 to 500 ohms like you recommended.

I will have to go back out there tommorrow and attack it.

Thanks 4Crawler for your patience! If my reply is wrong in any of the readins please correct me!


Yes, 2.3K on the 20K scale is 2300 ohms. Infinite or open is whatever your meter reads without the probes touching anything. 500 on a 2K scale is 500 ohms.

Re: Idle Question (Again) [Re: 4Crawler] #427408 04/01/04 03:12 PM
Anonymous
Unregistered
[quote
Yes, 2.3K on the 20K scale is 2300 ohms. Infinite or open is whatever your meter reads without the probes touching anything. 500 on a 2K scale is 500 ohms. [/quote]

Roger, Thanks for the help! You're always full of great tech and quick to help out others. It is very appreciated! <img src="/forums/images/graemlins/cheers.gif" alt="" />

Post deleted by little_joe [Re: Esquire812] #427409 04/01/04 09:13 PM
Anonymous
Unregistered

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