Erratic oil pressure reading at freeway speeds

analogdesigner · Dec 4, 2005

Hello everyone,

My new GT has an erratic oil pressure gauge reading when everything is warm and at freeway speeds (high gear). The gauge slowly bounces high and low, between about 30 to 50 PSI. This occurs about one cycle per every two seconds. Increasing the engine RPM's will immediately cause the gauge to read higher until the 75 PSI limit is reached. It behaves as if an oil pressure sender has a “bad spot” in this pressure region. The gauge appears to read smoothly under all other conditions.

Has anyone else experienced this behavior?

Thanks, Jay

NOTE: See my post later on in this thread...

4ord GT · Dec 4, 2005

Fuel Gauge

As far as the Fuel gauge goes. I can fill the tank up but the gauge stays on empty after starting the engine and driving away. At some point in the next driving cycle or two, the gauge comes alive and reads somewhere near full depending on when it decided to wake up.

gtjoey · Dec 5, 2005

fuel gauge/oil gauge

Running man great to hear from you again , as for the fuel gauge, make sure the key is out or in the off position when filling the tank, like all my other fords, it reads were you left off, then when you turn the key off it re sets itself to the new setting, should do it. If not the pump should self lube going up and down, junk could have built up in tank as alot of these jems have sat for 2,4 ,8 months with little or no gas and not moved, so pump gets a little lazy.For oil gauge ,its a real gauge no dummy or preset number, like all old hot rods if the oil is getting old or breaking down it will flux, the revs brings up that pressure, how many miles are on her, also if you keep gunning the pressure will flux alot almost surging, thats a real gauge , on all new cars its a fake set at a certain point , unless all the oil leaks out it will read the same no matter what. hope this can help gtjoey 1314 :thumbsup

csx289 · Mar 5, 2006

OK- I'm a newbie here, first post...

I had my 2006 out for the first time today, and immediately noticed the same super erratic readings on the oil pressure gauge. At a steady cruise (say 2k RPM, light throttle), the gauge will rapidly fluctuate from around 35 psi - 60 psi or so. At high rpm, yes, it stays around 75 and is reasonably steady.

I see this thread is somewhat old, is it possible only 2 cars have this problem, or am I missing other posts on the subject?

As a racer, seeing an opg fluctuate like that on a dry sump car is highly unsettling!

Please share if you have any feedback.

Best regards,
Colin Comer

SMLDONZI · Mar 5, 2006

Colin,
This is unrelated to the thread, but wanted to welcome you to the site seeing its your first post. I've been a big fan of your website for quite some time--some very tasty morsels pass through your doors. I saw a black GT in one of your pics and wondered. Congratulations. I'm on the brink myself--looking at a Tungsten near me on Tuesday. This site is a Terrific resource.
Will

Gierkink · Mar 5, 2006

My oil pressure gauge acts up all the time. It seems to be a rather common problem.

Rob

csx289 · Mar 5, 2006

Hi Will,
Thanks for the kind words. I'll have to try to hide the GT better in the future! LOL

If you ever make it up my way, make sure to let me know if you can stop in.

FWIW, my buddy's dealership here in Milwaukee just got a Tungsten 06 in, his first GT, that I think he will sell under MSRP...but don't quote me on that. Email me direct if you want his contact info. colin@colinsclassicauto.com

Best regards,
Colin

analogdesigner · Aug 22, 2007

It worked!

analogdesigner said:
Hello everyone,

My new GT has an erratic oil pressure gauge reading when everything is warm and at freeway speeds (high gear). The gauge slowly bounces high and low, between about 30 to 50 PSI. This occurs about one cycle per every two seconds. Increasing the engine RPM's will immediately cause the gauge to read higher until the 75 PSI limit is reached. It behaves as if an oil pressure sender has a “bad spot” in this pressure region. The gauge appears to read smoothly under all other conditions.

Has anyone else experienced this behavior?

Thanks, Jay

Update!

I finally replaced the oil pressure sender tonight and that solved the problem. It only took 7,958 miles to get this done.

Jay
GTsaver

standj · Aug 23, 2007

Thanks for the info, I have exactly the same problem (50psi to 35 psi at highway speeds). I will let the dealer know what to do.

John

analogdesigner · Aug 23, 2007

standj said:
Thanks for the info, I have exactly the same problem (50psi to 35 psi at highway speeds). I will let the dealer know what to do.

John

John,

Please keep us posted. I did this repair at my own cost! It was worth every cent!

Jay
GTsaver

FourFather · Aug 23, 2007

analogdesigner said:
Update!

I finally replaced the oil pressure sender tonight and that solved the problem. It only took 7,958 miles to get this done.

Jay
GTsaver

Thank you for this info! I'm a new Heritage owner and have the fluctuation in mine--I'll get my local dealer to order the sender.

Again, thanks! for helping out the rest of us!:thumbsup

Eddie:biggrin

analogdesigner · Aug 23, 2007

a pro that owns a GT!

FourFather said:
Thank you for this info! I'm a new Heritage owner and have the fluctuation in mine--I'll get my local dealer to order the sender.

Again, thanks! for helping out the rest of us!:thumbsup

Eddie:biggrin

I said to myself, wow, he looks a lot like Eddie Hill, the famous drag racer! After reading your post, I think I'm correct.

Welcome, it's great to have a pro that owns a GT and reads the info in our forum! The car looks great!

Please inform us if the sender replacement did the trick.

Best regards,
Jay
GTsaver

standj · Aug 25, 2007

Jay, will keep you posted

isaakgt · Sep 10, 2007

analogdesigner said:
I said to myself, wow, he looks a lot like Eddie Hill, the famous drag racer! After reading your post, I think I'm correct.

Welcome, it's great to have a pro that owns a GT and reads the info in our forum! The car looks great!

Please inform us if the sender replacement did the trick.

Best regards,
Jay
GTsaver

Yep, that's the great Eddie Hill. He set the world's TF drag boat record (229mph) here in my little town of Chowchilla some years ago. Take a look at www.eddiehillsfuncycles.com/shop/racingcareer.htm Welcome aboard, Eddie. :thumbsup

FourFather · Sep 10, 2007

analogdesigner said:
I said to myself, wow, he looks a lot like Eddie Hill, the famous drag racer! After reading your post, I think I'm correct.

Welcome, it's great to have a pro that owns a GT and reads the info in our forum! The car looks great!

Please inform us if the sender replacement did the trick.

Best regards,
Jay
GTsaver

Thanks, Jay, for the welcome!

My local dealer is supposed to be ordering the sender-- will post results when there are some.

Eddie:biggrin

FourFather · Sep 10, 2007

isaakgt said:
Yep, that's the great Eddie Hill. He set the world's TF drag boat record (229mph) here in my little town of Chowchilla some years ago. Take a look at www.eddiehillsfuncycles.com/shop/racingcareer.htm Welcome aboard, Eddie. :thumbsup

Thanks, isaakgt!

I'll always remember the 229mph weekend at Chowchilla! Seems like we always went faster in the shallow waters. I believe the racecourse there is an irrigation pond for the almond groves all around it, right? We must have been getting something like "ground effect" in a plane when you're close to the ground-extra lift. Extra "drive" off the bottom of a shallow lake? Who knows-- but it was sure fun!!:thumbsup We never had the heads or the pan off that weekend, either, our competitors couldn't figure that part out!:confused

Anyway, thanks for the welcome and for jogging one of my best memories!:thumbsup

Eddie:biggrin

isaakgt · Sep 10, 2007

FourFather said:
Thanks, isaakgt!

I'll always remember the 229mph weekend at Chowchilla! Seems like we always went faster in the shallow waters. I believe the racecourse there is an irrigation pond for the almond groves all around it, right? We must have been getting something like "ground effect" in a plane when you're close to the ground-extra lift. Extra "drive" off the bottom of a shallow lake? Who knows-- but it was sure fun!!:thumbsup We never had the heads or the pan off that weekend, either, our competitors couldn't figure that part out!:confused

Anyway, thanks for the welcome and for jogging one of my best memories!:thumbsup

Eddie:biggrin

Yep Eddie, that is exactly what it is. Nothing but a farm pond with almonds and grapes on all four sides. Good to see you again. If I can ever get down your way I will look you up. Always a fan, TI :cheers

FourFather · Sep 10, 2007

Quote- If I can ever get down your way I will look you up. Unquote

Be sure and do that, we'll make laps in these--

Eddie:biggrin

B O N Y · Sep 11, 2007

Welcome Eddie!!
I have enjoyed following your career!
I am an old drag boat racer myself, nothing as exciting a BFH, just enough to keep Sangar Jack (RIP) rolling in the chips.

FourFather · Sep 11, 2007

bony said:
Welcome Eddie!!
I have enjoyed following your career!
I am an old drag boat racer myself, nothing as exciting a BFH, just enough to keep Sangar Jack (RIP) rolling in the chips.

Hi, bony, thanks for the welcome!

The BFH was loads of fun, it really got the juices flowing!

I hand-delivered the first Jet Ski to hit California, to Kenny West in Fresno. I had bought his "Good as Hell" Kindsvater BGH hydro from him. He originally had a Ford engine in it to use it for a playboat, and I traded him the Jet Ski for the Ford engine. So I could put the Ford in it when I got ready to sell it. Anyway, Kenny and his buddies ran the Ski back and forth in the canal there in town, stopped lotsa traffic just to watch---a real happening.

I eventually set the UBFH record at 170, at Ming, and a guy here still has the boat, and the engine , which hasn't been fired since Ming. I ran a leak check on it when I got home--all leaks 2% or less, I pickeled it, and it is going back in the boat-- which has been restored right up to being ready to shoot the (same) colors back on!!

I spent some time with Harold Kindsvater there too--Helluva guy!! One of my all-time favorites!:thumbsup

Eddie:biggrin

Erratic oil pressure reading at freeway speeds

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