1996 DX ..what can I do? - Fuelly Forums

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Old 06-28-2008, 03:22 PM   #1
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1996 DX ..what can I do?

This is a Mazda Protege with 1.5.

I see this site is almost all Honda's, but hopefully some of those guy's can relate to Mazda setup as well.

One thing that interests me is "lean burn". I think my car is pretty much stock. "Lean burn" was a term used by Mazda to describe a variation of this engine sold in Japan. Some say the same setup was sold in US in '96.

I have a scanner that will print some information here, so what operational data would you need to see to tell me about how this engine controls itself? I think it behaves well, but I would appreciate your thoughts.

Thanks
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Old 06-28-2008, 03:46 PM   #2
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I'm thinking in Ford here, due to a lot of protege stuff being similar to escort stuff, but a scanner I borrowed was able to tell me injector duration hooked to the Escort. So, if'n you've got that, that should be an indication.
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Old 06-28-2008, 05:05 PM   #3
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I think the same engine might be in some escorts, but the ignition is different, among other things. I think that is correct.

Scanner shows obd2 ISO mode $10- Fuel trims, but not pulse width.

This is an actron scanner.
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Old 06-28-2008, 05:10 PM   #4
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this was at idle after a long drive


MIL STATUS OFF
ABSLT TPS % 9.8
ENG SPEED RPM 693
CALC LOAD % 15.6
MAF FLOW GR/SE 1.63
COOLANT ?F 192
IAT ?F 82
IGN ADVANCE DE 10.0
ST FTRM1 % 25.0
LT FTRM1 % 1.5
VEH SPEED MPH 0
FUEL SYS 1 OPEN2
FUEL SYS 2 N/A
O2S11 V 0.000
ST FTRM11 % 25.0
O2S12 V 0.835
OBD2 STAT US
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Old 06-28-2008, 05:27 PM   #5
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here is what happens when a new 02 sensor is needed.
Global OBDII

Non OBD Freeze Frame

Frame 1 Mod $10
TROUB CODE P1170
ENG SPEED RPM 2383
CALC LOAD % 25.4
COOLANT ?F 192
ST FTRM1 % 0.0
LT FTRM1 % -3.4
ST FTRM3 % -100.6
LT FTRM3 % -100.6
VEH SPEED MPH 42
FUEL SYS 1 OPEN2
FUEL SYS 2 N/A

check out the -100% fuel trim. Dont know what that means...
The 02 sensor was going way lean ( 0 volts) for several seconds at a time
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Old 06-28-2008, 06:36 PM   #6
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You won't get fuel rate from OBDII. If you want fuel injector data, take a look at the fuel rate monitor link in my sig. It's very interesting to watch live while you're driving.
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Old 06-28-2008, 08:07 PM   #7
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Ah right, that was an OBD-1 scanner I had, might have been in a ford specific program too, KOER regime of the EEC-IV self testing procedures now I come to think about it.
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Old 06-29-2008, 04:27 AM   #8
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Well, to be 100% accurate...while OBDII itself won't transmit fuel rate, there could be manufacturer-specific extensions to it that will, but they'll require expensive specialized equipment to read, instead of a relatively inexpensive ScanGauge or ELM327.
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Old 06-29-2008, 08:10 AM   #9
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Look into swapping in the JDM lean-burn motor and ECU. Maybe you can get close to Civic VX numbers.
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Old 06-29-2008, 12:31 PM   #10
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Quote:
Originally Posted by suspendedhatch View Post
Look into swapping in the JDM lean-burn motor and ECU. Maybe you can get close to Civic VX numbers.
That may not be possible or even necessary

I would like to know what some this scanner data means:

ST FTRM3
LT FTRM3
ST FTRM11

Maybe there are ways to convert the "economy" package to lean burn.
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