Codes that came up?
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From: CFB Petawawa Canada
Codes that came up?
Here another
Damn, go away for 6 months and the old girls falling apart.
As posted , my 4lt has been running rough. The codes pulled were. 116 ECT higher or lower than expected-temp was normal,
157 MAF sensor curcuit below normal voltage
536 BOO curcit failure/not actuated during KOER ( did it but came up)
538 Insufficent RPM change during KOER dynamic response test
Has anyone else had these,before I go out and purchase useless extras. My manual does not outline full details.
Dave
Damn, go away for 6 months and the old girls falling apart.
As posted , my 4lt has been running rough. The codes pulled were. 116 ECT higher or lower than expected-temp was normal,
157 MAF sensor curcuit below normal voltage
536 BOO curcit failure/not actuated during KOER ( did it but came up)
538 Insufficent RPM change during KOER dynamic response test
Has anyone else had these,before I go out and purchase useless extras. My manual does not outline full details.
Dave
Postmaster
Joined: Sep 2003
Posts: 4,452
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From: Southern California
A lot of crazy codes comes up with a weak battery. Did you park the van for 6 months? If so, it may be worth it to disconnect the battery to clear the codes and recharge it at the same time.
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Joined: Sep 2003
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From: Southern California
Originally Posted by CdnSoldier
Here another
Damn, go away for 6 months and the old girls falling apart.
As posted , my 4lt has been running rough. The codes pulled were. 116 ECT higher or lower than expected-temp was normal,
157 MAF sensor curcuit below normal voltage
536 BOO curcit failure/not actuated during KOER ( did it but came up)
538 Insufficent RPM change during KOER dynamic response test
Has anyone else had these,before I go out and purchase useless extras. My manual does not outline full details.
Dave
Damn, go away for 6 months and the old girls falling apart.
As posted , my 4lt has been running rough. The codes pulled were. 116 ECT higher or lower than expected-temp was normal,
157 MAF sensor curcuit below normal voltage
536 BOO curcit failure/not actuated during KOER ( did it but came up)
538 Insufficent RPM change during KOER dynamic response test
Has anyone else had these,before I go out and purchase useless extras. My manual does not outline full details.
Dave
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From: CFB Petawawa Canada
Copper
Thanks, I have cleaned the MAF twice. So I think, I'm have to go and buy one. I'm up on how to correct them, its just when some thing relates to the samething stumps me.
Thanks, I have cleaned the MAF twice. So I think, I'm have to go and buy one. I'm up on how to correct them, its just when some thing relates to the samething stumps me.
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From: CFB Petawawa Canada
I've redid the tests 3 times and the damn codes still come up. Voltage is good at the battery, MAF has good voltage, BOO has been set. But ? Any other ideas for the crowd. I would hate to pay 178$ for a new MAF and won't need it.
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From: Southern California
CdnSoldier:
The MAF has 4 pins: A, B, C and D.
Unplug the connector and probe the voltage at pin A with Key-On-Engine-Off. That should be at about Battery Voltage.
Plug the connector back in and see if you can splice in a little wire onto the wire on pin D. Measure that voltage with the engine running. It should be as follows:
Engine Size Idle 30 mph 55 mph
4.0L 0.6-0.7V 1.0-1.4V 1.5-2.0V
3.0L 0.9-1.0V 1.4-2.0V 2.3-2.7V
Please note that the values may be plus or minus 20%. But if you see something greatly out of the ordinary, that should tell you that you need a new MAF.
The MAF has 4 pins: A, B, C and D.
Unplug the connector and probe the voltage at pin A with Key-On-Engine-Off. That should be at about Battery Voltage.
Plug the connector back in and see if you can splice in a little wire onto the wire on pin D. Measure that voltage with the engine running. It should be as follows:
Engine Size Idle 30 mph 55 mph
4.0L 0.6-0.7V 1.0-1.4V 1.5-2.0V
3.0L 0.9-1.0V 1.4-2.0V 2.3-2.7V
Please note that the values may be plus or minus 20%. But if you see something greatly out of the ordinary, that should tell you that you need a new MAF.
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From: CFB Petawawa Canada
Thanks
The voltage you gave me is different than my Ford book. The book had .05-.08v and 1.3-1.7V. I had .07 at idle. I may just replace the damn thing. Only Ford sells it here cheap, NAPA Canada does not list it, and Canadian Tire list it for 239$. I may go and try one from the wreckers, off a new veh with the same part number for 10$. I hate the Maritimes, 20 yrs behind.
The voltage you gave me is different than my Ford book. The book had .05-.08v and 1.3-1.7V. I had .07 at idle. I may just replace the damn thing. Only Ford sells it here cheap, NAPA Canada does not list it, and Canadian Tire list it for 239$. I may go and try one from the wreckers, off a new veh with the same part number for 10$. I hate the Maritimes, 20 yrs behind.
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From: Southern California
Wait, Cdnsoldier. What year is the van? It's a 4.0L, right? The values I gave you are for '93-95. If you have a newer van, it might be different.
If it reads 0.07 and your book says 0.05-0.08, I see no reason to replace it.
Also, I don't understand the reference to the Maritimes Hockey team?
If it reads 0.07 and your book says 0.05-0.08, I see no reason to replace it.
Also, I don't understand the reference to the Maritimes
Hockey team?
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Originally Posted by copper_90680
A lot of crazy codes comes up with a weak battery.
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From: CFB Petawawa Canada
Copper Thanks
What I meant was in the Eastern part of Canada some parts come up unavailable. IE NAPA out here does not list a MAF, or some AC parts.I lived in Ontario and all parts at even a independent were available.
But its a 94, 4lt. Only reason I was thinking to replace the MAF was I have cleared the codes twice. And the same ones come up. Cleaned the MAF, IAC, checked the BOO, wiring, Plug wires, plugs you name it I have checked it. But it still idle rough. Runs great no miss, good fuel milage 6-8 Lts/K (20-25 M/Gal).
The only real problem is the small hole in the flex pipe.
What I meant was in the Eastern part of Canada some parts come up unavailable. IE NAPA out here does not list a MAF, or some AC parts.I lived in Ontario and all parts at even a independent were available.
But its a 94, 4lt. Only reason I was thinking to replace the MAF was I have cleared the codes twice. And the same ones come up. Cleaned the MAF, IAC, checked the BOO, wiring, Plug wires, plugs you name it I have checked it. But it still idle rough. Runs great no miss, good fuel milage 6-8 Lts/K (20-25 M/Gal).
The only real problem is the small hole in the flex pipe.
Post Fiend
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From: Washington state
if a MAF has became lazy/failed, usually shows up across rpm range, low heater element temp or low/slow sensor response.
IAC is my 2 cents, Ford says not cleanable-replacement only, has internal diaphram that sometimes is damaged, IAC supplies 95% of idle air-too much or too little air--idle fuel mix is off and poor
idle, what happens when you pull IAC electrical plug? no easy concise way to completely test for correct idle air flow.
small hole in flex pipe???? you mean black tube from MAF to TB, any air leak here is not good, really throws off fuel/air mix parameters
20-25 mpg in 4L indicates MAF is operating properly, how is acceleration?, fast and smooth indicates MAF is operating correctly and fuel mix is correct across air flow range.
IAC is my 2 cents, Ford says not cleanable-replacement only, has internal diaphram that sometimes is damaged, IAC supplies 95% of idle air-too much or too little air--idle fuel mix is off and poor
idle, what happens when you pull IAC electrical plug? no easy concise way to completely test for correct idle air flow.
small hole in flex pipe???? you mean black tube from MAF to TB, any air leak here is not good, really throws off fuel/air mix parameters
20-25 mpg in 4L indicates MAF is operating properly, how is acceleration?, fast and smooth indicates MAF is operating correctly and fuel mix is correct across air flow range.
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From: Southern California
Originally Posted by CdnSoldier
The only real problem is the small hole in the flex pipe.
