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Will a fuel pressure sensor to make my check engine light start to flash on and off

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  • Cars & Trucks Master
  • 15,557 Answers

You did not post the year make and model so it is hard to say anything other then go get an OBD reader from an auto store and use it. A flashing check engine light is serious and if you drive that vehicle, you risk engine damage.

Posted on Dec 17, 2016

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 7 Answers

SOURCE: Fuel Pressure Problem on my 1996 Ford Explorer (4.0 V6)

Sounds like the fuel pressure regulator is going bad...this will cause the fuel pressure to be high and create a flooding condition. Which in turn will gas wash the motor and contaminate the O2 sensor with excessive fuel. Check fuel pressure with a gauge at the valve you are using to relieve pressure. You can find pressure specs on-line for that particular vechicle. If pressure is high...replace regulator, O2, change oil and reset computer by disconnecting battery for ten minutes...

Posted on Feb 19, 2009

localwonder
  • 6784 Answers

SOURCE: CTS check engine light code P0451

Hi. the fuel pressure sensor is part of the fuel pump assembly. You will have to remove the fuel pump to replace this. I would go ahead and replace the fuel pump while you are there.You will have to Pull the strainer off the fuel pump and discard it. remove the retaining clip for the fuel pressure regulator so that you can remove the fuel pressure regulator. Disconnect the electrical connections for the fuel pumps and the fuel level sensor. Remove the retaining clip for the fuel level sensor and remove the fuel level sensor by squeezing the locking tangs. the sensor is incorporated in this area.

Please rate and god bless.

Posted on Mar 26, 2009

pippall
  • 1486 Answers

SOURCE: 1987 chevy S10 engine idle problem

relace the throtle air idle valve.The temp switch will allso cause this problem.

Posted on Jul 19, 2009

  • 32 Answers

SOURCE: po452 trouble code changed sensor engine light

you might try unhooking the battiey for 20min both + and - posties cuz that will force the computor to have to resest only if you have addressied the fuel pressure problem which taht would most likly be your filter which isn't all that much

Posted on Sep 21, 2009

herbalgarden
  • 344 Answers

SOURCE: 95 2.5 jeep wrangler stalls consistantly and will

I had the same issue with my 4.0, I went through all the same BS you did and in the end it was a faulty fuel pump. Pricy i know but im sure thats your problem

Posted on Nov 15, 2009

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1 Answer

Over fueling at Idle/low revs causing rough run and engine stall suddenly.


Possible causes of your issue:
  1. Clogged air filter
  2. Bad fuel pressure regulator (most likely)
  3. Sticky idle air controller (also likely)
  4. Burned or stuck EGR valve, or bad EGR solenoid
  5. Bad throttle position sensor (especially if the "Check Engine" light is on or flashing)
  6. Bad oxygen sensor (especially if the "Check Engine" light is on)
  7. Water in fuel or bad fuel
What to do:
  • Start by removing the air filter to see if the problem persists. If the air filter is dirty, replace it.
  • Next, verify that the Check Engine light is operating by turning the key ON but not starting the vehicle. The Check Engine light should be illuminated. If not, replace the Check Engine light bulb.
  • If the Check Engine light is ON when you start the car, try feathering the accelerator pedal to see if the base idle stabilizes or changes. If it does, replace the TPS (Throttle Position Sensor). This is a fairly inexpensive part.
  • If the Check Engine light is FLASHING, or ON, next you will need to have a local mechanic or your local auto parts store attach an ODB scanner to determine what error codes are present. This will help you pinpoint the issue.
  • Once you have pinpointed and corrected any issues present using the ODB codes, you will need to attach a FUEL PRESSURE GAUGE to the fuel rail test point to determine if the fuel pressure is correct. If it is too high, the FUEL PRESSURE REGULATOR has failed. Again, this is an inexpensive part but the fuel system pressure must be released before servicing this part. Best done by a qualified mechanic.
  • HAS THE CAR SAT UNUSED FOR A PROTRACTED AMOUNT OF TIME WITHOUT FUEL BEING REMOVED OR ADDED? If so, the condition you are describing may be a result of bad fuel. Modern fuels contain ethanol, which causes moisture to condense in the tank when it is not agitated. This can cause water to build up in the fuel, and causes the fuel system to rust as well as an idle issue that resembles what you are describing. Try adding new fuel, and add a full bottle of FUEL SYSTEM WATER REMOVER. Remember: IF FUEL IS ALLOWED TO SIT IN YOUR VEHICLE'S TANK (without new fuel being added) FOR MORE THAN SIX MONTHS, IT WILL GO BAD.

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1 Answer

My 2004 VW Passat 1.8 turbo has had quite a few problems. In February my car started flashing OIL PRESSURE TURN MOTOR OFF whenever I'd hit 2000 RPM. SO I got my oil changed and my pressure checked and it...


With all of the low voltage problems going on here I would check the body computer. That is the only thing I can think of that would cause all of this. Some others may have suggestions on this.

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1 Answer

2003 Buick 3800 engine 82,000 actual miles on it multiple/random misfire code How it started.. Car was running fine. Check engine light started flashing and engine started missing. What...


You can't rule anything out yet. It could be a plug or injector among other things, but probably not low fuel pressure. If you have a code 300 and nothing else, you may have to wait until the problem gets bad enough to set additional codes. And if any of the sensors fail, such as the cam or crank sensors, you'll get a code for those to be tested.
Have the plugs been checked or replaced in the past 30,000 miles ?

Mar 12, 2014 | 2003 Buick LeSabre

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Check engine light flashing 98


Have codes pulled, possible CKP sensor or fuel pressure or other issue.

Jan 04, 2014 | 1998 Chevrolet S-10 Pickup

1 Answer

Flashing check engine light on a 2001 chevy venture


First check for spark at any of the sparkplugs and if you have spark then check your fuel pressure.This will help narrow the problem down.Let me know what area the problem is in whether it be ignition of fuel.

Jan 14, 2012 | Chevrolet Blazer Cars & Trucks

1 Answer

Engine cranks but wont start


Usually if no rpm signal, the vehicle won't start. Engine cranking, did you check for spark at the spark plugs? The fuel pressure you listed may have been the initial prime. It sounds like no injector pulse. The rpm signal comes from crank sensor. If your missing rpm signal, may thought is the crank sensor.
Were there any applicable trouble codes?

Apr 06, 2017 | 2001 Ford F150 Styleside SuperCrew

1 Answer

Engine cranks. sparks but does not start. fuel pressure ok


Have you replaced the crank sensor? The crank sensor on top of the trans. bell housing does control the injector pulse through the ECM.
The sensor is a common problem with the Jeeps. Sometimes the sensor stops working when the engine is hot and will start again when it cools off and sometimes it dies from oil leaking on top of it or it just dies.

Jan 20, 2009 | 1993 Jeep Cherokee Country

1 Answer

1994 Jeep Cherokee turns over but won't start.


Pump should run with key on till it builds up pressure. To check coil, hold wire about a quarter inch from block and have someone crank engine. Spark should be strong and bluish (is that a word?) Anyhow, if coil is good, do the same thing again, only with a spark plug wire (any one you can easily reach) PS you did get the firing order right when you changed them? If there is no spark, check :Crank sensor is a bit harder to check.... First, check codes: Turn ign switch on and off three times, leaving it on the third time: check engine light will flash. read as follows: one flash= the number one etc. there is a pause between flashes: one flash, pause, two flashes= the number twelve. Ignore code 55 it just means the computer is finished sending codes. Code 11 is the crank sensor. To further check, disconnect the sensor harness and check for continuity between b&c terminals (connector should be marked) there should be no continuity when checked with an ohmeter between these two terminals. Crank sensor is on the left side of the bellhousing just where it's a real pain to reach it! Harness connector is on the firewall near or below the back of the engine on the drivers side.

Dec 16, 2008 | 1994 Jeep Grand Cherokee

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