Question about 1990 Plymouth Sundance

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This is driving me crazy for one, we had everything for the fuel system replaced fuel pump,filter,relay, fuel lines, and now the engine temp control sensor and the car will be going down the road and shut off after a few mins it will crank back up and go for a few more miles and do it a again. is there anything we have over looked that could be the problem.

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Check engine earth body earths earth points

Posted on Mar 19, 2011

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1989 f-250 inertia fuel shut-off switch switch location


This should be in the owner's manual. I found the below on autozone.com, their repair help location:
An inertia switch is used as a safety device in the fuel system. The inertia switch is located in the cab, generally under the dashboard on the right side. It is designed to open the fuel pump power circuit in the event of a collision. The switch is reset by pushing each of 2 buttons on the switch simultaneously (some models use switches with only one reset button). The inertia switch should not be reset until the fuel system has been inspected for damage or leaks.
When the ignition switch is ON , it turns the EEC power relay ON . The EEC power relay provides power to the powertrain control module (PCM) and the control side of the fuel pump relay. Power for the fuel pump(s) is supplied through a fuse link or high current fuse attached to the starter solenoid (battery side). From the fuse link or high current fuse, current flows through the fuel pump relay and inertia switch to the fuel pump(s). The fuel pump relay is controlled by the PCM.
When the ignition switch is turned ON , the fuel pump(s) will operate. If the ignition switch is not turned to the START position the PCM will shut the fuel pump(s) OFF after 1 second. The PCM will operate the fuel pump(s) operate the fuel pump(s) when the ignition switch is turn to START position to provide fuel while cranking.
After the engine starts, the PCM will continue to operate the fuel pump(s) unless the engine stops, drops below 120 rpm or the inertia switch is tripped.

Dec 28, 2013 | 1989 Ford F 250

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How to change a fuel pump in 2004 Volkswagen Jetta


IN THE GAS TAKE BY DROPPING THE TANK OR UNDER THE BACK SEATS IF IT THERE YOU WILL TO REMOVE THE SEATS OUT

Mar 07, 2011 | 2004 Volkswagen Jetta

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I have a 1995 gmc jimmy with a 4.3 vortec engine and i was driving and engine shut off i do have spark and when i used starting fluid engine started has a good fuel pump and i was told it could be the fuel...


There is not a part called a fuel sensor on this vehicle. If you have good electrical to ingition and no OBD codes witch it is most likely an OBD 11 system the first year for your vehicle. So is the MIL light on service engine light on if no then replace the fuel filter first its under the drivers door mounted to the frame rail also check if the fuel pump is putting out enough fuel and pressure when you have the filter off by turning the key to run and putting a plastic bottle on the line comeing from the fuel pump you should get about an ounce per second from the pump do a 5 second test you should get about 5 ounces of fuel. If you say get one ounce then the pump is no good if its OK then it is likely the fuel filter and this will solve the problem. The reason i'm telling you this is the fuel pumps on these vehicles had problems and unless you or someone else has replaced the pump it is the most likely cause of this problem good luck A nd there some fuel sensors on the fuel pump it self for pressure and gauge control and EVAP emissions control systems that wouldn't stop fuel flow to the throttle body they would just set codes off

Jan 31, 2011 | 1995 GMC Jimmy

1 Answer

Honda Civic Coupe. Year 2000 1.6. How can I depressurize the fuel system easily to change the fuel filter situated in the engine compartment.


Hi,

IMPORTANT: Do not skip the fuel system pressure release step. Injury and other damage can result!
Safety Step! Relieving Fuel System Pressure
· allow engine to cool
· relieve fuel system pressure
· put on your eye protection
Before you begin the job of replacing your fuel filter, you must relieve the pressure in your fuel system. A fuel injection system operates under very high pressure. If you don't release this pressure before you start unscrewing fuel lines the result can be explosive. Do this before you attempt to change the fuel filter.
To release the pressure in your fuel lines (and fuel filter) you'll need to locate the fuel pump fuse in the fuse box. If you don't have a fuel pump fuse, find the relay that operates the fuel pump. Once you've found the fuel pump fuse or relay, start the car. With the engine running, pull the fuse or relay out. If you pulled the right one, the engine will quickly die. Since it's using all of the pressurized fuel in the system, the fuel lines won't be pressurized when you crack the fittings on your fuel filter.
Now that you've relieved the fuel pressure you can remove the old fuel filter.
If you didn't do this yet, you must go to the previous step and do it. Very dangerous!

Best regards.

Oct 28, 2010 | 2000 Honda Civic

2 Answers

My 93 cougar like sputters when running. no power, and idles real hard. what could this be?


I'm guessing fuel pump is going. Check for 40 PSI pressure with fuel pressure gauge. Check in engine comaprtment.
Section 10-01: Fuel Tank, Filters, Lines and Electric Fuel Pump 1995 Thunderbird, Cougar Workshop Manual
DESCRIPTION AND OPERATION Fuel Pump, Electric The electric fuel pump:
  • Is part of the fuel pump module.
  • Is located in an internal reservoir in the polyethylene fuel tank (9002) .
  • Is mounted with its inlet at the bottom of the reservoir.
  • Is designed to increase satisfactory pump operation during extreme vehicle maneuvers and steep climbs with low fuel levels.
  • The high-pressure fuel pump module on the 3.8L SFI and 4.6L-2V engines can supply 60 liters (15.9 gal) of fuel per hour at a working pressure of 269.0 kPa (39 psi).
  • The fuel pump module on the 3.8L SC SFI engine can supply 125 liters (29.0 gal) at the same rate and pressure.
  • The fuel pump module has an internal check valve to maintain pressure in the system after the engine is shut down.
  • The fuel pump module also has an internal release valve to provide protection from too much pressure if fuel flow becomes clogged in the fuel filter (9155) , the fuel line is damaged, or other factors.
  • Overpressure is limited to 850 kPa (123 psi) and reduced fuel flow will result if the pressure relief valve is activated.
  • The fuel pump module is protected at its inlet by a nylon fuel filter element (9365) which filters contaminants which could plug or damage fuel pump components.
  • The fuel filter element simultaneously allows passage of small quantities of water which may accumulate within the tank reservoir.
  • The electrical system has a fuel pump control relay in the powertrain control module (PCM) (12A650) which provides power to the fuel pump module through an inertia fuel shutoff switch (IFS switch) (9341) that is normally closed.
  • The electrical system provides power to the fuel pump module through two relays:
    • Fuel pump power relay.
    • PCM power relay.
The current path depends on operating conditions.
  • When the ignition switch (11572) is OFF, contacts of both relays are open.
  • When the ignition switch is first turned to RUN, the PCM power relay energizes and closes its contacts.
  • Power is sent to the fuel pump relay and a timing device in the powertrain control module .
  • The fuel pump module runs through the contacts of the fuel pump relay.
  • If ignition switch is not turned to START, the timing device in the powertrain control module will open ground Circuit 57 after about a second.
  • Opening the ground circuit deenergizes the fuel pump relay, which opens its contacts and de-energizes the fuel pump.
  • The circuitry provides pre-pressurization of the fuel system.
  • When the ignition switch is turned to START, the powertrain control module operates the fuel pump relay to provide fuel while cranking.
  • After the engine starts and the ignition switch is ON, power to the fuel pump module is again supplied through the fuel pump relay. The powertrain control module senses engine speed and shuts the fuel pump module OFF by opening the ground circuit to the fuel pump relay when the engine stops or is below 120 rpm.



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Oct 26, 2010 | 1993 Mercury Cougar

1 Answer

2004 KIA TROUBLE WITH START UP AFTER FILLING UP WITH GAS


The fuel filter may be at the end of it life time and need to be replace. I believe the fuel filter is under the battery bolted to the frame rail. Its a cylinder shape with a fuel line on both end with quick connect fittings. IN the fuse box, remove the fuse to the fuel pump or the fuel pump relay with the engine running, this will depressurize the fuel line. The fuel line on the filter are quick connect fittings, depress the tab's on the fuel line and push towards the filter and the line should just pop off. If you find it to hard to depress the tabs, use a pair of pliers. But be careful not to damage the fuel line. Install the new filter, place fuse or relay back in for the fuel pump. start the engine and look for leaks. If the check engine light came on, disconnect the battery to clear the light, but make sure the radio is turned off before you disconnect the battery for 5 min. Reconnect and everything should be good to go. Hope this helps. keep me posted.

Jun 05, 2009 | 1999 Kia Sportage

3 Answers

1995 GMC Pickup Won't Start After Sitting Over Night


93 GMC PICKUP WONT START REPLACE RELAY SWITCH'FUEL PUMP' MODULE CONTROL BOX' POUR GAS IN TROTTLE BODY TRY TO RUN

Aug 29, 2008 | 1995 GMC Suburban

2 Answers

Engine dies and eventualy re-starts - Not Temp Related


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