Map Sensor Replacment
Thread Starter
Safety Car
Joined: Mar 2005
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From: Winnipeg Manitoba, Canada
Map Sensor Replacment
I'm trying to find a replacement MAP sensor but can't find a new AC Delco one. Anyone have any luck with Delphi or Standard Motor Products MAPs? I found 2 AC Delco ones which say they fit a 90 VIN 8, but they have different part numbers. Any insight? Thanks!
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two ac delco units available from rockauto - these the same ones you found?
http://www.rockauto.com/en/moreinfo....041264&jsn=657 (delco professional)
http://www.rockauto.com/en/moreinfo....041264&jsn=654 (delco GM OE)
I've got to ask - anything wrong with the one on your 90 now? maybe you just need the correct mounting bracket. there is a used MAP sensor w/bracket and hardware on fleabay for $50 (or make offer)
http://www.ebay.com/itm/1990-1991-CO...FWIuNA&vxp=mtr
http://www.rockauto.com/en/moreinfo....041264&jsn=657 (delco professional)
http://www.rockauto.com/en/moreinfo....041264&jsn=654 (delco GM OE)
I've got to ask - anything wrong with the one on your 90 now? maybe you just need the correct mounting bracket. there is a used MAP sensor w/bracket and hardware on fleabay for $50 (or make offer)
http://www.ebay.com/itm/1990-1991-CO...FWIuNA&vxp=mtr
Last edited by Joe C; Jul 11, 2016 at 08:37 AM.
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OP - With your "location" maybe you just take the original OE 16137039 and see what's available "local". If yours is stamped 460 or 466 (maybe 038) I'd do diagnostics and not buy anything until convinced there's actually a failure. I maybe wouldn't mind a JY purchase!
The correct bracket would be found on '90 - '92 F-bodied 5.0 & 5.7 cars also.
The correct bracket would be found on '90 - '92 F-bodied 5.0 & 5.7 cars also.
Thread Starter
Safety Car
Joined: Mar 2005
Posts: 4,723
Likes: 11
From: Winnipeg Manitoba, Canada
two ac delco units available from rockauto - these the same ones you found?
http://www.rockauto.com/en/moreinfo....041264&jsn=657 (delco professional)
http://www.rockauto.com/en/moreinfo....041264&jsn=654 (delco GM OE)
I've got to ask - anything wrong with the one on your 90 now? maybe you just need the correct mounting bracket. there is a used MAP sensor w/bracket and hardware on fleabay for $50 (or make offer)
http://www.ebay.com/itm/1990-1991-CO...FWIuNA&vxp=mtr
http://www.rockauto.com/en/moreinfo....041264&jsn=657 (delco professional)
http://www.rockauto.com/en/moreinfo....041264&jsn=654 (delco GM OE)
I've got to ask - anything wrong with the one on your 90 now? maybe you just need the correct mounting bracket. there is a used MAP sensor w/bracket and hardware on fleabay for $50 (or make offer)
http://www.ebay.com/itm/1990-1991-CO...FWIuNA&vxp=mtr
Unfortunately when I removed the bracket and tried to disconnect the vacuum line, the plastic hole where the vacuum line goes snapped. So I need a new one.
And a bracket! 
Thread Starter
Safety Car
Joined: Mar 2005
Posts: 4,723
Likes: 11
From: Winnipeg Manitoba, Canada
OP - With your "location" maybe you just take the original OE 16137039 and see what's available "local". If yours is stamped 460 or 466 (maybe 038) I'd do diagnostics and not buy anything until convinced there's actually a failure. I maybe wouldn't mind a JY purchase!
The correct bracket would be found on '90 - '92 F-bodied 5.0 & 5.7 cars also.
The correct bracket would be found on '90 - '92 F-bodied 5.0 & 5.7 cars also.
I tried calling local part stores, none of them have. Go figure.
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***You posted while I was "composing" so maybe ignore BUT using the OE number maybe try to use conversions locally!
Shop "local" and you very well might end up with/find an OE in an other than OE package. It wasn't uncommon for earlier emission devices to have OE "repacked" in their branding. The 460 or 466 presence could likely be a "hint" that it's OE. I'd think it would be on the shelf locally and no need for an Internet purchase. "Toe to toe" resolutions if you're unhappy with the performance!
Shop "local" and you very well might end up with/find an OE in an other than OE package. It wasn't uncommon for earlier emission devices to have OE "repacked" in their branding. The 460 or 466 presence could likely be a "hint" that it's OE. I'd think it would be on the shelf locally and no need for an Internet purchase. "Toe to toe" resolutions if you're unhappy with the performance!
Last edited by WVZR-1; Jul 11, 2016 at 09:02 AM.
Thread Starter
Safety Car
Joined: Mar 2005
Posts: 4,723
Likes: 11
From: Winnipeg Manitoba, Canada
***You posted while I was "composing" so maybe ignore BUT using the OE number maybe try to use conversions locally!
Shop "local" and you very well might end up with/find an OE in an other than OE package. It wasn't uncommon for earlier emission devices to have OE "repacked" in their branding. The 460 or 466 presence could likely be a "hint" that it's OE. I'd think it would be on the shelf locally and no need for an Internet purchase. "Toe to toe" resolutions if you're unhappy with the performance!
Shop "local" and you very well might end up with/find an OE in an other than OE package. It wasn't uncommon for earlier emission devices to have OE "repacked" in their branding. The 460 or 466 presence could likely be a "hint" that it's OE. I'd think it would be on the shelf locally and no need for an Internet purchase. "Toe to toe" resolutions if you're unhappy with the performance!
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IMHO (and this differs from WVZR-1), instead running around locally, trying to finding a part for a 26 year old corvette, personally, i'd go to rockauto, hit the enter button and wait for the UPS guy
. if you want to gamble on used, i'd make an offer on that fleabay sensor and bracket. the delco OE replacement is an alternate part number for your original 16137039 part -
Last edited by Joe C; Jul 11, 2016 at 10:45 AM.
Thread Starter
Safety Car
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From: Winnipeg Manitoba, Canada
"professional" is a clever, marketing, play on words. delco "professional" for the most part is made by a third party supplier that meets GM specs. it could be made by anybody, and put into a delco box. for the most part, delco professional are decent replacements. delco GM OE, in my opinion would be tier one part. better than "professional" - who knows???
IMHO (and this differs from WVZR-1), instead running around locally, trying to finding a part for a 26 year old corvette, personally, i'd go to rockauto, hit the enter button and wait for the UPS guy. if you want to gamble on used, i'd make an offer on that fleabay sensor and bracket. the delco OE replacement is an alternate part number for your original 16137039 part -
IMHO (and this differs from WVZR-1), instead running around locally, trying to finding a part for a 26 year old corvette, personally, i'd go to rockauto, hit the enter button and wait for the UPS guy
. if you want to gamble on used, i'd make an offer on that fleabay sensor and bracket. the delco OE replacement is an alternate part number for your original 16137039 part - 
. I'll go the Rock Auto route. Its much cheaper, and it's an actual AC Delco part. Only downside is it might take a few days to get here. Thanks for the help guys.
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http://www.ebay.com/itm/1990-1991-CO...mtr&rmvSB=true
make him an offer - at least you'll get the mounting bracket and hardware...
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From: I tend to be leery of any guy who doesn't own a chainsaw or a handgun.
FYI: Delphi is the same group that used to be the various Delco subsidiaries of GM (GM sold most all the component divisions in 1999. The component groups are now an independent corporation named Delphi.) Delco now is primarily a marketing group within GM (no manufacturing AFAIK) When in doubt about new parts, I'd lean towards Delphi. That's where most all the component engineering and manufacturing experience from GM went.
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I'm not sure I would buy it from a junkyard unless the parts places are closed and I have to get home tonight and that was all that there was.
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From: I tend to be leery of any guy who doesn't own a chainsaw or a handgun.
That's the difference between you and me. If the part has 466 on it, that means it was built in a real GM facility by real GM (ie: Delco Electronics) engineers. I would trust a used Delco part off a junkyard car before I bought an expensive new part built by who knows, at a factory in who knows whereville.
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That's the difference between you and me. If the part has 466 on it, that means it was built in a real GM facility by real GM (ie: Delco Electronics) engineers. I would trust a used Delco part off a junkyard car before I bought an expensive new part built by who knows, at a factory in who knows whereville.
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From: Park City Utah
That's the difference between you and me. If the part has 466 on it, that means it was built in a real GM facility by real GM (ie: Delco Electronics) engineers. I would trust a used Delco part off a junkyard car before I bought an expensive new part built by who knows, at a factory in who knows whereville.
X2. Especially a MAP sensor; no moving parts (like aTPS, for example). I'd get a used one for sure. 
Team Owner
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From: Hartford WI
That's the difference between you and me. If the part has 466 on it, that means it was built in a real GM facility by real GM (ie: Delco Electronics) engineers. I would trust a used Delco part off a junkyard car before I bought an expensive new part built by who knows, at a factory in who knows whereville.
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From: I tend to be leery of any guy who doesn't own a chainsaw or a handgun.
If you understood the electrical and temperature extremes, and rapid thermal cycles that those sensors were designed spec'd to deal with without failure, you'd understand that sitting quietly in a junkyard is like Club Med to that part.
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From: Hartford WI
Thermal issues are the least of my concerns. Even if they pulled them out and stored them in a shed where it gets hotter than ambient, I'm OK. I am finicky about sensors that have sat in a pool of rainwater, corroded terminals or stuff hotwired crudely by employees to test the motors. I won't even get into what the previous owners have done to diagnose a problem or work around an issue, given up and junked the car.