Weird O2 sensor

[Jimmy]

I went and looked at a Ty for a guy in Chattanooga yesterday,and saw the weirdest 02 sensor ever.It was a 3 wire and went in the stock location,but it was only as big around as a pencil.(I'll post a pic tomorrow.)WTF was it?

 

[sytyguy]

I've seen a few....I'll get a PN & app tomorrow.

Hood

 

[Jimmy]

here's a pic
http://pg.photos.yahoo.com/ph/badv6blazer2000/detail?.dir=mail&.dnm=5190.jpg&.src=ph

 

[bezerk]

Re: Weird O2 sensor

I went and looked at a Ty for a guy in Chattanooga yesterday,and saw the weirdest 02 sensor ever.It was a 3 wire and went in the stock location,but it was only as big around as a pencil.(I'll post a pic tomorrow.)WTF was it?

what kind of oil-dipstick is that?

 

[Jimmy]

Re: Weird O2 sensor

I went and looked at a Ty for a guy in Chattanooga yesterday,and saw the weirdest 02 sensor ever.It was a 3 wire and went in the stock location,but it was only as big around as a pencil.(I'll post a pic tomorrow.)WTF was it?

what kind of oil-dipstick is that?

Dunno.I checked this truck out,it's been to 3 shops over the last 4 years,dude has spent 9100 so far trying to figure out what's wrong.I had the hood up for 30 seconds before I think Ifigured it out.
When you activate the FP,the pressure goes right up to 42 psi,but as soon as you turn it off the pressure starts dropping.Given the fact that there is fuel in the oil,I said he's got a busted diaphram in the afpr.But it could be that the check valve in the FP is stuck open,or the injectors are leaking.Hopefully we'll get it all straighted out soon.It's 92 #1949 with 60k and is a nice Ty.

 

[Jimmy]

I've seen a few....I'll get a PN & app tomorrow.

Hood

Hook me up Mr. CockFarmer. uke:

 

[odium]

Can you explain how you tested that? Did you leave the key off and jumper the fuel pump to see what it was flowing, then turn it off to see if it stayed or did you turn the motor over at all?

 

[Jimmy]

Can you explain how you tested that? Did you leave the key off and jumper the fuel pump to see what it was flowing, then turn it off to see if it stayed or did you turn the motor over at all?

Just jumper it to pressurize the system,then shut it off to see if it held pressure.Pressure started dropping immediately.

 

[dgoodhue]

Re: Weird O2 sensor

I went and looked at a Ty for a guy in Chattanooga yesterday,and saw the weirdest 02 sensor ever.It was a 3 wire and went in the stock location,but it was only as big around as a pencil.(I'll post a pic tomorrow.)WTF was it?

what kind of oil-dipstick is that?

Dunno.I checked this truck out,it's been to 3 shops over the last 4 years,dude has spent 9100 so far trying to figure out what's wrong.I had the hood up for 30 seconds before I think Ifigured it out.
When you activate the FP,the pressure goes right up to 42 psi,but as soon as you turn it off the pressure starts dropping.Given the fact that there is fuel in the oil,I said he's got a busted diaphram in the afpr.But it could be that the check valve in the FP is stuck open,or the injectors are leaking.Hopefully we'll get it all straighted out soon.It's 92 #1949 with 60k and is a nice Ty.

If the Diaphram is busted, the vacuum line should be filled with gas. A bad fuel pump check valve will also do that (though it would not contribute to gas in the oil)

 

[Jimmy]

Re: Weird O2 sensor

I went and looked at a Ty for a guy in Chattanooga yesterday,and saw the weirdest 02 sensor ever.It was a 3 wire and went in the stock location,but it was only as big around as a pencil.(I'll post a pic tomorrow.)WTF was it?

what kind of oil-dipstick is that?

Dunno.I checked this truck out,it's been to 3 shops over the last 4 years,dude has spent 9100 so far trying to figure out what's wrong.I had the hood up for 30 seconds before I think Ifigured it out.
When you activate the FP,the pressure goes right up to 42 psi,but as soon as you turn it off the pressure starts dropping.Given the fact that there is fuel in the oil,I said he's got a busted diaphram in the afpr.But it could be that the check valve in the FP is stuck open,or the injectors are leaking.Hopefully we'll get it all straighted out soon.It's 92 #1949 with 60k and is a nice Ty.

If the Diaphram is busted, the vacuum line should be filled with gas. A bad fuel pump check valve will also do that (though it would not contribute to gas in the oil)

Right on,I just want to cover all the bases before he lays down a C-note for an afpr.I told him that was the problem via email 6 months ago,and he was like "It's a brand new afpr".

 

[bezerk]

than i would geuss it''s a leaky injector.
somebody would have a set around, so you can swap them in 10 min.
it''s somethomg to begin with..

 

[dgoodhue]

Unfortunately I have a lot of experience with hunting down a rich running GM vehicle. If its a leaky injector, the engine will be difficult to start shortly after being run (ie just after an injector leaks down) It usually is easier to start if it sit a day because the gas evaporates. A really messed up coolant sensor or intake temp can also cause rich running vehicle motor. If he has a vacuum gauge, check to make sure the vacuum is ~20in at idle.

 

[bezerk]

they way i see it, is that the FP drops down when the engine has been shut off..
i could have this wrong..

 

[Jimmy]

It sits at 20" on idle.I'll post results when we figure it out.

 

[sytyguy]

Re: Weird O2 sensor

In reference to the title......

The O2 sensor fits '92-'95 GM Vehicles. Couldn't find a specific app, but below are 2 part numbers:

GM #10137641
Standard SG41

D*mn I'm good...... ;-)

Hood