I changed the sending unit and replace the oil filter with a motorcraft unit and still can't get the oil gauge to read pressure. Since it is a gear oil pump I don't believe it is the pump.
View 2 Replies'97 F150 4.6L 4wd automatic... My gauge jumps around, sometimes it works and other times it shows no pressure. Could that be the oil pump? Or is the gauge most likely bad? Whats the actual purpose of an oil sending unit?
View 6 RepliesI have an 01 F150 Lariat Supercrew 4x4 with the 5.4 Triton. The truck has 222,000 miles on it. Recently, I have noticed that when I am stopped at a stop light/stop sign while in gear, the oil pressure gauge drops to zero and the light comes on. As soon as I let off the brake and give it gas, it pops back up to normal. While driving, the needle never moves and stays consistent until I stop again, and back down to zero it goes.
If I put the truck in Park, the pressure goes back to normal. Same with neutral. It seems it is hit or miss and does not do this all the time, but I just wanted to see what your thoughts are. After doing some research I am leaning towards an oil pressure sensor/sending unit.... The truck runs perfectly fine, I just want to make sure it is not something more serious.
2002 F150, 4.6 V8, 140k miles. Oil level good, oil was changed 2 months ago.
Driving along one day, out of the blue oil pressure light comes on, oil pressure gauge went to zero.
Engine did not run hot, no bad engines noises that I can hear.
Upon restart, oil pressure will be up on the gauge for minute or so, then goes to zero and oil light comes on.
Asked around, some say oil pump, some say oil filter or pickup tube.
Just recently got a sweet deal on an 01 Lariat with a very low mileage 5.4L. I almost didn't purchase it because the oil pressure gauge will not read when you start the engine. Sometimes it will sometimes not.
When it does read, it is just past half which is the normal reading. When it doesn't read, it shows zero and the light is on. The engine runs fine either way, and the previous owner said it has been that way for years. The engine has been well cared for, and has been running Mobile 1 full synthetic for most of the 80k miles. The oil was not overly dirty at purchase, so I figured it to be a loose connection. I suffer from the cold solder joints that these trucks are plaqued with, as evident by the intermittent odometer reading. Do you think the oil gauge issue is the same thing? A cold solder joint? Or should i just start with a new sender?
My launch scanner reported a bad oil pressure switch, but I've replaced that, and when I did the oil pressure light went away, but my gauge still didn't work. Could it be a faulty switch? Or is it common for gauges to stop working on these fords seeing how there's a resistor to trick the gauge from the factory anyway? If I smack my dash the gauge will raise and lower. But I think that's normal.
View 7 RepliesStarted the morning with oil pressure gauge dropping to 0, gave it a few minutes checked oil, it was fine. Restarted truck, pressure went back to normal. Drove about another 30 miles pressure gauge would drop but would rise when hit accelerator. I was driving about 60mph, gauge went back to 0, check engine light came on and within a matter of seconds, a whining noise started, pulled over before i could completely stop, it died, and now won't crank.
View 6 RepliesHave a 2000 F-150, 5.4L. Once recently in a parking lot, it would crank but not fire or start. Wife called me to come get her. By the time I got there, she said it started "after she loosened the gas cap & re-closed it." But, it started fine for next several weeks. Yesterday it didn't. I read a bunch of threads here on possibilities. Many troubleshoot items I checked out or had done.
Chilton manual says you can get limited error codes from the light on dash flashing - MIL - Malfunction Indicator Lamp Method.
For now, I'm trying to find the 2nd, separate, one-wire lead "near or with the (main) Diagnostic Connector." They call the single wire / connector the "Self-Test Input connector" (STI). You're supposed to use a jumper between that STI & the upper, right connector of the main diagnostic connector. Then you (may) get flashes corresponding to codes via the key on, engine off method.
I see no such single wire lead or connector anywhere near there. Not up under the dash either - stuck my head under there & used mirror. There's a separate connector (not in use) clipped on the L side of the main diagnostic connector, but it has 5 pins inside. I took pics, but forum says I "may not post attachments." Been a member for yrs. That extra 5 pin connector faces toward firewall.
There's an "empty hole" - 1/4 in. (facing forward) in the bracket that holds the main diagnostic connector. Just above the main connector. Not sure if something was ever there
If no one knows how / if the Malfunction Indicator Lamp Method works or where the jumper goes, I'll be forced to buy a code reader w/o researching which are decent or crap (around $200 or less). I maybe? could wait to order one online (if knew which one). Also have AutoZone, O'Reilly, Advance, NAPA, PepBoys & others locally.
* The truck shows a check engine soon light, so should be a code already. * Yes, I tried her loosen / tighten gas cap trick.
* Also put a slow charger on for a while & even used the fast start setting on charger. No go, but engine turns really fast.
* Crawled under the gas tank & listened for fuel pump to activate when key is turned to Run.
* Fuel pump made a small noise - more like a relay or "clicking" - not a whine or whir.
* Checked most fuses - under dash & hi voltage box - that have anything to do w/ fuel pump, PCM & several others - mentioned in similar threads here.
Can't really check relays & don't want to just start replacing parts. I don't have a code reader & reluctant to buy one from local store w/o some reasonable research. (I don't mind buying one, but...). If I could drive it to the auto store, I wouldn't be asking this. Chilton's doesn't say if this malfunction indicator lamp method will work if a vehicle won't start. But, a code is already thrown.
Today I started my 2000 Suburban on the coldest morning ever, -14 degrees actual temp. I went inside to let it warm up and about 15 min later I went out to go to work and the check oil pressure light was on and oil pressure read 0. Is this due to extreme cold and thick oil ? Or did something break on start up. I am going to wait until temps are up before I try it again as it was running awful. I am fearing that 15 min warm up may have hurt her.
View 14 RepliesMy gas gauge will read empty every once in a while then correct itself after driving for a few miles. Is it just the sensor sticking?
View 5 RepliesI have an 08 s-crew and latley the gas gauge doesnt seem to read correctly some times. Once waiting for the wife to get in and the low fuel alarm chimed and the gauge read empty. I just filled the tank. What could cause this?
View 2 RepliesOK so here is what is going on in my world. I have an '03 F-250 6.0 Crew Cab 4x4, with an Edge programmer and 4" MBRP exhaust. About 3 years and only 20,000 miles ago I changed out the HPOP, O-rings on the rails, all new O-rings on the injectors, blue spring in the fuel pump, IPR valve, EGR valve and a number of other new seals in my high pressure system. The truck has run great since then. I cleaned out my turbo about a year ago and it has been like new.
Now for the fun part. About a month ago it has been cranking a little longer when hot than it should, but not too bad. About 2 weeks ago even though it starts fine in the morning, it is just completely gutless out of the driveway until about a block away the turbo spools up strong and it runs great. It has run perfectly during this time once it is warmed up a little bit. Saturday it left me stranded in a parking lot cranking with no start. It had been sitting for about 2 hours.
I got towed home and plugged in my SGII and it shows my ICP at 345 when cranking hot. Once cold it starts up and runs great, but won't start again once hot. I changed out my IPR valve with a used one that I had on the shelf that I took out when I did my HPOP. No change. The FICM has 47 volt while cranking and 49 when just ign is on. Batteries are very strong and it has a new starter. When cranking the low oil pressure comes up on the gauge. Not sure where to start and I am frustrated. I have had this truck for 9 years and it is in great shape. It only has 138,000 miles.
I need to install an oil pressure sensor sending unit. I've already occupied the 1/8"NPT test port on the rear of the oil cooler, where else might I be able to tap into oil pressure? (LPOP)
View 4 RepliesI bought an Autometer 4763 gauge that didn't come with the correct fittings to plumb the sender into one of the extra ports on the back of the bowl. I went to the Ace hardware store right across the street and they didn't have anything (not surprised) and then Napa. They couldn't find a fitting to match either. He found that the plug threads are 7/16 20 tpi and the sender is 1/8" NPT. He suggested getting a 7/16 20tpi bolt, drilling it rifle-style, and then tapping it for a 1/8" NPT. The alternative, and what I ended up doing, was to use brass fittings to tee it off one of the supply lines to the heads. I ended up going that route but wanted to know if I should have looked harder for the right fitting.
Here's a pic of what I have now. I've test fit it, and it seems to work although I will need to insulate the hard lines because they rub due to the offset.
Looking for pics of where/how they mounted their fuel pressure gauge? I'm getting ready to install one.
View 11 RepliesI recently bought a 2005 Ford F250 Super Duty, diesel 6.0.
As I was driving to work this morning I noticed that the fuel gauge read almost full when it should have only had a half tank. A little while later I heard a beep and saw that the gauge was now on empty with a "Low Fuel" message displayed. Then I noticed the heater was suddenly blowing cold air.
I've only had the truck for a few weeks, but haven't had any other problems. I did replace the CD receiver and all of the instrument cluster lights a couple weeks ago, but everything seemed to be working fine after.
Last week I was driving on the highway and noticed the oil pressure gauge showed no pressure. Limped a half mile to the mother-in-laws and called for a tow. As my truck was pulled onto the flatbed I could see oil all over the bottom of the engine, tranny, rear end, etc. Turned out to be a bad oil pressure sender, which was leaking enough oil to blow the plug off the top of it.
I replaced the sensor, cleaned the engine and under-carriage, checked oil level (which showed no loss of oil) and drove around for a week without an oil pressure gauge while I waited for a new pigtail. Put the pigtail in yesterday and drove it today for the first time since. Gauge was working, got to the bank and it was reading zero pressure again. Limped home and watched the gauge go back up quickly and then back down. This happened twice and was showing pressure when I shut it off. Checked under hood, no oil leaks and plug is still secure.
The P3cars gauge to read battery voltage is misleading since it is reading the voltage when the alternator is running. How do i get it to read the actual battery voltage without the engine running?
View 6 RepliesI have a 2009 Prius. Yesterday, I had a very strange (to me) thing happen. My gas gauge read all notches, full. As expected, it went down a notch at about 120 miles.
I sat in a parking lot for a bit with the car in ready, running, and park. I noticed that whenever the car would switch to using gas, the gas gauge would change. It would suddenly show all notches again, instead of missing one.
When it would switch back to battery, the notch would move down again.
It eventually moved down 2 notches (which is probably accurate since I was sitting for about 30 minutes) and then would jump back up to full when it switched to gas again.
I am installing a fuel pressure gauge into my 02 7.3 I went to the thread the sensor into the plug hole on the fuel filter housing and it wasn't threaded, turns out the sensor thread is slightly smaller and a different thread ... The directions say to install it into the filter housing or the lift pump ... So I'm assuming I have to go the lift pump direction of installing it but where the lift pump is or how to install the sensor into it while not throwing a code or causin problems ... A step by step and even pictures.
View 14 RepliesAbout 90% of the time, my gas gauge on my 2005 Impala works just fine. However, sometimes on hot afternoons it has problems & it doesn't read accurately. For example, I will have a nearly full tank & the gauge will show 1/4 to 1/2 full, depending on its "mood". If I drive the car somewhere & turn it off, everything is fine after I re-start it. I have to drive it somewhere though. If I start it, turn it off right away, and re-start it, it still reads inaccurately. The car runs fine & there no warning lights are lit on the dash.
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