Chevy 454 Oil pressure gauge/sending unit trouble - stuck on 60psi

[DonD]

Question.. I found the wiring harness that goes to the 2 wire sensor (still dont know the name of it) would the wire I'm looking for be in with those?

Appears to be!

[moonlitcoyote]

So I found the wire, it was up inside the black casing that holds the wires. It goes from the sensor up to the left side of the engine right inside the dog house.

Bought a new sensor and hooked it all up

BUT the other sensor is leaking, the one with 2 wires and I cannot buy one anywhere. I checked 2 auto parts stores and they cant even order it. It's not even listed as a dealer item.. So other than changing out the engine I am at a loss as to what to do now... Any ideas??

MJ

[MotorPro]

Find a real parts store with a counter person who knows what they are doing. Very commen sender.

[DaveVA78Chieftain]

NAPA: http://www.napaonline.com/Catalog/CatalogItemDetail.aspx?R=ECHOP6707_0366105618

Autozone (may no longer be avaialble): http://www.autozone.com/autozone/parts/Duralast-Oil-Pressure-Switch/1985-Chevrolet-P30-Van/_/N-jcs14Z93xnq?itemIdentifier=103792_0_15459_5835

EBAY: http://www.ebay.com/itm/General-Automotive-OP71041-Engine-Oil-Pressure-Sender-Vehicles-Light-/370704214004

[DaveVA78Chieftain]

If you cannot find one of those, then we can use a little different one but would require changing the connector at the sender

http://www.autozone.com/autozone/parts/Oil-Pressure-Switch/_/N-8znc6?filterByKeyWord=457874&fromString=search&fromType=oem
or
http://www.autozone.com/autozone/parts/Duralast-Oil-Pressure-Switch/_/N-8znc6?itemIdentifier=123802_0_0_

They all work basically work the same, just different connectors

(Source: Chevy Motorhome Service Manual)

Dave

[moonlitcoyote]

Napa didnt have it either and they even called their tech center, the tech center said they dont have anything they recommend replacing it with..Which brings me back to the thought that you would have to replace the entire engine if this part went bad, how can that be?

The problem with the alternate ones you posted Dave is the thread size is different, mine is Thread Size : 1/4" x 18 NPT and the alternates are Thread Size:1/8 x 27 NPTF Dryseal

This is a pain in the butt and I thought the 454 was common enough that it would be easy to get any part.

[bluebird]

MJ the one that Dave gave you a link for from NAPA has the thread size you stated.

Part Number: ECH OP6707                     Product Line: Echlin Ignition Parts                     

Look at it again. It should be the switch you need.

[DaveVA78Chieftain]

If the NAPA near you does not have OP6707 (1/4 x 18) that fits your connector then get

OP6632 which is also (1/4x18) but with different connectors.

http://www.napaonline.com/Catalog/CatalogItemDetail.aspx?R=ECHOP6632_0366101857

That indicates it is in stock at the store near my office.

Sorry, I sould have looked at the thread size for the actual one.  I missed that.  The one I just listed though does have the correct size.

I am getting these recommendations from the Chevrolet Motorhome Chassis Service Guide, page 7-42 (pdf page 137).  Not pulling them out of the air.

Dave

[moonlitcoyote]

As I stated .....

Napa didnt have it either and they even called their tech center, the tech center said they dont have anything they recommend replacing it with.

[moonlitcoyote]

Thanks Dave, I dont mind changing the connector, I should just have to cut the end off and splice in the new connector right? I will check and see if napa has that one available.

[DaveVA78Chieftain]

I should just have to cut the end off and splice in the new connector right?

Yes  (female spade connectors on the wires)

Like I said, shows in stock at my local store.

It would be Duralast PS134 at autozone

http://www.autozone.com/autozone/parts/_/N-8znc6?itemIdentifier=123893_0_0_

Dave

[moonlitcoyote]

Well shoot, Napa is closed today and AZ and oreilleys dont have it in stock. Oh well maybe when we move to a new town someone will have it. Thanks for all the help Dave.

MJ

[Oz]

Ever fix this?

[Rickf1985]

I was wondering that myself since the sender being talked about appears to be the safety switch for the electric fuel pump and not the oil pressure sender.

[DaveVA78Chieftain]

Muckity Muck should know for sure.  She was driving all over the southeast at that time.

Dave

[M & J]

I cant remember. I know we looked all over hell for that sender but cant recall if she found it.

And looks like Mark ended the muckity muck over the weekend. Fun while it lasted.

[Oz]

It's an important item.  Would like to clear-up the what the correct sending unit looks like and see it there are any sources to get them.

[moonlitcoyote]

LOL, I dont remember if I ever fixed it. Thats not good, huh? Guess I'm going to have to crawl under it soon and take a look to see if I can tell if I changed it.

[HandyDan]

This is the one I installed:

[DaveVA78Chieftain]

That all happened when the situation with the little one went south.  With all the frustration and the issues you had on the ride south, I do not think the leaking one was every fixed.  You did, as posted above, fix the pressure gauge problem (http://www.classicwinnebagos.com/forum/index.php/topic,6609.msg36998.html#msg36998).

Dave

[moonlitcoyote]

well I have this topic bookmarked, so after court Tuesday I'll know more and can get back to work on things that are broken.

[moonlitcoyote]

So I found the sensor in the jeep, guess I never installed it. I will do that this week if I can remember where it goes.

[moonlitcoyote]

Project complete! I finally got under the winny and put in the new sensor. I used p/n PS134 from Autozone Cost $6.69. I did have to cut off the connector and splice in female spade connectors. But that was easier than dealing with the mosquitoes that bit me everywhere.

[DaveVA78Chieftain]

Kool MJ.  Glad to hear it all worked out as planned.   

Silly girl - And they say men are the procrastinators!   

Dave

[moonlitcoyote]

LOL, I'm THE WORST procrastinator .. I just have better things to do with my time, like hunting and fishing