map sensor
Lead Driver
Joined: Jul 2017
Posts: 9,606
Likes: 1,175
From: San Jose, CA
And you're sure it's the parts themselves, and not something wrong with the wiring and/or connector?
Just wondering if messing about with the wiring when you're changing the sensors is what's "fixing" the problem temporarily.
But yeah, new stuff is a crapshoot. Just like starter relays, I'd search the junkyard for a cheap factory original before buying a new one anymore.
I know there are good ones, and "new" is always a cool thing. But with the crap we're getting nowadays causing so many issues, the junkyard is actually a very good source of parts now.
Not sure what the dealer would charge, if they even still carry the part (doubtful after this many years maybe) but it's probably quite a bit.
Good luck.
Paul
Just wondering if messing about with the wiring when you're changing the sensors is what's "fixing" the problem temporarily.
But yeah, new stuff is a crapshoot. Just like starter relays, I'd search the junkyard for a cheap factory original before buying a new one anymore.
I know there are good ones, and "new" is always a cool thing. But with the crap we're getting nowadays causing so many issues, the junkyard is actually a very good source of parts now.
Not sure what the dealer would charge, if they even still carry the part (doubtful after this many years maybe) but it's probably quite a bit.
Good luck.
Paul
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New User
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I have looked at wireing and nothing obvious stands out but i will look at again and replace connector thanx for input
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Cross-Country
Joined: Apr 2018
Posts: 71
Likes: 11
I was about to buy a cheap map sensor off rockauto because I had code 22. after inspecting the wiring a found some wire got melted a little because they were testing on the motor near the passenger side exhaust manifold .
I would just shake the wires and it would start working , shake them again and it would stop.
if no damaged wires maybe consider the pcm?
I don't have much experience with these trucks but from what iv researched it has to be the map , wiring or pc.
do you get code 22 ?
I would just shake the wires and it would start working , shake them again and it would stop.
if no damaged wires maybe consider the pcm?
I don't have much experience with these trucks but from what iv researched it has to be the map , wiring or pc.
do you get code 22 ?
Lead Driver
Joined: Jul 2017
Posts: 9,606
Likes: 1,175
From: San Jose, CA
Vantage Pro I think it's called. Pretty sure they have more than one model of the same thing, with various capabilities. But not sure. Friend just bought a brand new one last month and it's pretty darn trick. Even he's pretty chuffed with it, and he's a bit jaded about such things.
When looking to replace a Sears unit that batteries killed recently, I noticed that they had a similar one as well. At least in packaging, if not performance. Might be worth checking out as well, if you're not a die-hard adherent to Snap-On specifically.
Paul
When looking to replace a Sears unit that batteries killed recently, I noticed that they had a similar one as well. At least in packaging, if not performance. Might be worth checking out as well, if you're not a die-hard adherent to Snap-On specifically.
Paul
New User
Joined: Nov 2016
Posts: 16
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As the SMA video above shows, our MAP sensor locations are vulnerable to water ingress. Over the years I have had water get into a couple MAPs. Relocating the replacements a little farther away from the hood seam fixed the issue.
Re: scan tool: I recommend the Actron CP9690 for EEC-IV stuff. Gives you codes and the ability to read some live data.
Re: scan tool: I recommend the Actron CP9690 for EEC-IV stuff. Gives you codes and the ability to read some live data.
Lead Driver
Joined: Jul 2017
Posts: 9,606
Likes: 1,175
From: San Jose, CA
I was thinking if he also added a shim to tilt the unit so that the connector was pointing down, it might help as well. But if the cover really wasn't sealed that well in the first place, that would not have done much good.
And besides, if the connectors are the typical weather-resistant type (assuming so) then that's probably not where the water was getting in to begin with. Relocation then, seems the best way to go.
I think I have one of those Actron units for sale if anyone is interested. I have a couple different ones that I've never used.
Paul
And besides, if the connectors are the typical weather-resistant type (assuming so) then that's probably not where the water was getting in to begin with. Relocation then, seems the best way to go.
I think I have one of those Actron units for sale if anyone is interested. I have a couple different ones that I've never used.
Paul