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  #1  
Old 09-02-2016, 10:35 AM
bochnak bochnak is offline
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Boat: 94' Prostar 205 - Indmar 5.7 TBI
Location: Mount Prospect,IL
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MEFI 1 TBI service manual

Anyone have a link or file they can share with me?

I only have the first 12 pages of section 5.

Specifically, I'm looking for page 5-74, code 42 check.

Thanks,
Matt
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  #2  
Old 09-02-2016, 08:31 PM
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bret bret is offline
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Boat: Prostar 190, 1993, Anniversary Limited.
Location: Heber Springs, AR
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3 Oxygen Sensor Inactive
14 Coolant Sensor Voltage High (cold)
15 Coolant Sensor Voltage Low (hot)
21 Throttle Position Sensor Voltage High
22 Throttle Position Sensor Voltage Low
23 Manifold Air Temp Sensor High (cold)
24 Speed Sensor Inactive (if installed)
25 Manifold Air Temp Sensor Low (hot)
31 Governor Not Tracking
32 EGR Valve Not Tracking (if installed)
33 Manifold Absolute Pressure Sensor High
34 Manifold Absolute Pressure Sensor Low
41 Electronic Spark Timing Open Circuit
42 Electronic Spark Timing Grounded Circuit
43 Electronic Spark Control Detects Continuous Knock
44 Electronic Spark Control Cannot Detect Knock
45 Coil Driver Fault
51 ECM Calibration Checksum Error
52 ECM Hardware Failure
54 Oxygen Sensor Lean
55 Oxygen Sensor Rich
61 Fuel Pressure Sensor High
62 Fuel Pressure Sensor Low
81 (multiple causes, use scan tool to determine cause)
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1993 25th Anniversary Limited ProStar 190, #17
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  #3  
Old 09-02-2016, 08:32 PM
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bret bret is offline
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http://www.rinda.com/acro/codemate.pdf
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1993 25th Anniversary Limited ProStar 190, #17
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  #4  
Old 09-02-2016, 09:28 PM
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mikeg205 mikeg205 is offline
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Boat: 1995 Pro Star 205 5.7 Liter
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clymer book no help - I don't have any reference for purple/white wire (distributor reference high) and black red (distributor reference low) - tan black is IC bypass -

unfortunately don't have the values for that - but maybe one of the those is showing 0 volts the 4th wire not used.. plain tan.
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  #5  
Old 09-06-2016, 10:00 AM
bochnak bochnak is offline
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Join Date: Sep 2013
Boat: 94' Prostar 205 - Indmar 5.7 TBI
Location: Mount Prospect,IL
Posts: 521
Quote:
Originally Posted by bret View Post
3 Oxygen Sensor Inactive
14 Coolant Sensor Voltage High (cold)
15 Coolant Sensor Voltage Low (hot)
21 Throttle Position Sensor Voltage High
22 Throttle Position Sensor Voltage Low
23 Manifold Air Temp Sensor High (cold)
24 Speed Sensor Inactive (if installed)
25 Manifold Air Temp Sensor Low (hot)
31 Governor Not Tracking
32 EGR Valve Not Tracking (if installed)
33 Manifold Absolute Pressure Sensor High
34 Manifold Absolute Pressure Sensor Low
41 Electronic Spark Timing Open Circuit
42 Electronic Spark Timing Grounded Circuit
43 Electronic Spark Control Detects Continuous Knock
44 Electronic Spark Control Cannot Detect Knock
45 Coil Driver Fault
51 ECM Calibration Checksum Error
52 ECM Hardware Failure
54 Oxygen Sensor Lean
55 Oxygen Sensor Rich
61 Fuel Pressure Sensor High
62 Fuel Pressure Sensor Low
81 (multiple causes, use scan tool to determine cause)
I have the code list and know how to read them. I'm looking for how to fix it now. Looking for the service manual.
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  #6  
Old 09-06-2016, 10:00 AM
bochnak bochnak is offline
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Join Date: Sep 2013
Boat: 94' Prostar 205 - Indmar 5.7 TBI
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Quote:
Originally Posted by bret View Post
I made my own code reader for free
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  #7  
Old 09-06-2016, 10:02 AM
bochnak bochnak is offline
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Join Date: Sep 2013
Boat: 94' Prostar 205 - Indmar 5.7 TBI
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Quote:
Originally Posted by mikeg205 View Post
clymer book no help - I don't have any reference for purple/white wire (distributor reference high) and black red (distributor reference low) - tan black is IC bypass -

unfortunately don't have the values for that - but maybe one of the those is showing 0 volts the 4th wire not used.. plain tan.
I have the clymer....no help there.
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  #8  
Old 09-06-2016, 10:03 AM
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mikeg205 mikeg205 is offline
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what was it doing before tune up?
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  #9  
Old 09-06-2016, 10:04 AM
bochnak bochnak is offline
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Boat: 94' Prostar 205 - Indmar 5.7 TBI
Location: Mount Prospect,IL
Posts: 521
I ended up using a MEFI 4 manual for trouble shooting. I just referenced a MEFI 1 wiring diagram and noted all the pinout differences:

MEFI 4
https://drive.google.com/open?id=0B9...Et3dTFSTC04T0U

MEFI 1
https://drive.google.com/open?id=0B9...nlXYUN2SkVLRGc
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  #10  
Old 09-06-2016, 10:07 AM
bochnak bochnak is offline
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Join Date: Sep 2013
Boat: 94' Prostar 205 - Indmar 5.7 TBI
Location: Mount Prospect,IL
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Quote:
Originally Posted by mikeg205 View Post
what was it doing before tune up?
I "think" I was getting code 42 last year. Over winter decided to replace plugs, wires, cap, rotor, IC module due to corrosion, and check timing is set to 10 BTDC.

Runs and starts better for sure.
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