Advertise with ProbeTalk - click here to find out how!



Advertise with ProbeTalk - click here to find out how!
Advertise with ProbeTalk - click here to find out how!

ProbeTalk.com Forums

  ProbeTalk.com Forums > Tech Section > 2nd Gen (93-97) V6 2.5L

2nd Gen (93-97) V6 2.5L Discussion of Maint Issues for V6

 
September 28th, 2010, 09:56 PM   #1
FightTillYouDie
Member
 
: Feb 2008
: Sparks, Nevada
: 35
: 154
A new misfire/hesitation on accel. Problem..

As of today I was driving my mx-6 and when I start off from a stop IF I get it to the point of almost stalling while taking off the car starts running like crap, doing a misfire and hesitation all the way up to maybe 2500 rpms, then as it gets to higher rpms it smooths out. If I accelerate normally with out getting the rpms really low to almost stalling the problem isn't present... but after it starts to act up, it won't go away.

Also when this problem is present I can stop the car and take it out of gear, and rev the engine and it will rev up fine. BUT if I put in the clutch while still out of gear and rev it, the car misfires and hesitates as if I were accelerating from a stop.

Anyone know what this could be? The car has new disty, disty cap,wires, plugs.... Could a Bad disty rotor do this? I'm so stumped..

Car is 93' Mx-6 KLZE mtx
__________________
1993 Mazda MX-6 LS KL-ZE MTX
1994 Mazda Miata MX-5 MTX
1993 Ford Probe GT MTX(169,xxx)-Sold
1995 Ford Probe GT MTX(Dead)
1992 Mazda MX-3 GS MTX(Sold)
 
September 29th, 2010, 10:26 AM   #2
FightTillYouDie
Member
 
: Feb 2008
: Sparks, Nevada
: 35
: 154
Well, when I unplug the TPS the car seems to run better, lightly misfires and barely sputters if even at all.... Doesn't backfire or sputter into a stall like when the TPS is plugged in.

So i'm thinking I either got a bad TPS or I just need to adjust it? If it were bad wouldn't it throw a code?
__________________
1993 Mazda MX-6 LS KL-ZE MTX
1994 Mazda Miata MX-5 MTX
1993 Ford Probe GT MTX(169,xxx)-Sold
1995 Ford Probe GT MTX(Dead)
1992 Mazda MX-3 GS MTX(Sold)
 
September 29th, 2010, 12:37 PM   #3
mac1
Probe has-been
 
 
: Jun 2001
: Phoenix
: 13,955
That's a high possibility, with no TPS the ecu relies on VAF.
__________________
1993 Mercury tRacer :Vitara & mFactory: was my #1
1994 Mercury TrAcer Wagon : '02 SPI swap : the loaner
2001 Hyundai Accent 2.0L-T3 swaphas flat pots
2014 Factory Five 818s EJ255t :it's adorable
2000 Lotus esprit v8TT : under the knife 2018
2003 Pathfinder 200k miles : The daily
No I do not Uber any of these
 
September 29th, 2010, 01:31 PM   #4
FightTillYouDie
Member
 
: Feb 2008
: Sparks, Nevada
: 35
: 154
I used a mulimeter and set the TPS to about .60 and it seems to run better but still not too well... Would a bad one still be able to be adjusted like this? or just show .00?


And.... Is it bad to run without the TPS? I need to use the car to go to work and back. If its ok, what does it affect? gas mileage? anything?
__________________
1993 Mazda MX-6 LS KL-ZE MTX
1994 Mazda Miata MX-5 MTX
1993 Ford Probe GT MTX(169,xxx)-Sold
1995 Ford Probe GT MTX(Dead)
1992 Mazda MX-3 GS MTX(Sold)
 
September 29th, 2010, 01:47 PM   #5
mac1
Probe has-been
 
 
: Jun 2001
: Phoenix
: 13,955
From my personal experience, we ran a car with no TPS signal going back to the ECU unknowingly at first and it drove normal except it lacked some power up at the top. You need to check the purple wire I believe for min and max voltage with close throttle and WOT, watch for any glitches like a dead spot in the voltage while your opening the throttle.
__________________
1993 Mercury tRacer :Vitara & mFactory: was my #1
1994 Mercury TrAcer Wagon : '02 SPI swap : the loaner
2001 Hyundai Accent 2.0L-T3 swaphas flat pots
2014 Factory Five 818s EJ255t :it's adorable
2000 Lotus esprit v8TT : under the knife 2018
2003 Pathfinder 200k miles : The daily
No I do not Uber any of these
 
September 29th, 2010, 01:53 PM   #6
JazRedGT
Junior MODARATER
 
 
: May 2008
: Norfolk, VA
: 36
: 5,126
I have an extra TPS. If you want I can ship it to you for free. Just send me the address.
__________________


1993 PGT-DE-T Silver Surfer - 8psi


1995 PGT Daily Driver - D2's - Turbo kit sitting in garage

1997 F-150 - Home Depot Getter

2004 Acura TSX - Wife Mobile

2007 BMW 335i Coupe - My new toy
 
September 29th, 2010, 10:01 PM   #7
tjvjr
PT Regular
 
: Sep 2010
: Elizabethton TN
: 47
: 579
thats cool Jaz. it does sound like a dead spot .
 
September 29th, 2010, 10:44 PM   #8
SCOTT9875
Registered User
 
: Sep 2010
: MARYLAND
: 152
How do you set or adjust the tps . I've had my car for over 14 yrs and is now just starting to get back into fixing it up . Would like to know for future purposes.
 
September 30th, 2010, 08:08 AM   #9
tjvjr
PT Regular
 
: Sep 2010
: Elizabethton TN
: 47
: 579
Probe with 2.5L Engines

1. Detach the connector from the throttle position sensor.

2. Connect an ohmmeter between terminals IDL and GND.

3. Rotate the throttle linkage by hand. With the throttle valve fully closed, the ohmmeter should read 0.1-1.1 volts.

4. With the throttle valve fully open, the ohmmeter should read 3.1-4.4 volts.

5. If not as specified, adjust or replace the throttle position sensor.


you can find more info here - http://www.autozone.com/autozone/rep...26122c#hd1-1-2
 

« | »










ProbeTalk.com is not affiliated in any way with the Ford Motor Company, the Mazda Motor Corporation, or any subsidiaries of either company.
All views and opinions expressed on this message board are those of the author and not the owners of ProbeTalk.com.