Question about 2000 Renault 181

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No start car breakdown no start fuel pump , injectors has been check on test bench pressure switch check 5.8v i remove the injectors outsit the block to check no pressure ECU has been check but after that all the accessories are not working

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Check the spark plugs they may need to be replaced

Posted on Jul 23, 2009

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1991 Dodge Dakota fuel pump wireing. I removed pump and tested OK- Tried switching relays (all same in relay box) Still no cycling only a slight noise then silent. Ran 12-v (spiced) to left wire of 5.


engine cranking do you have spark at the plugs and fuel injector pulse? I don't know what testing you have done? I am trying to decide if more than one issue? Did you check voltage and ground at fuel pump connector, engine cranking? Initial prime is one thing but after that, if no rpm signal, no spark--no fuel injector pulse--no fuel pump. W/o rpm signal computer won't ground the asd relay. Any applicable trouble codes?
In my opinion, you can't bench test a fuel pump, I've seen faulty fuel pumps that would run up a storm on the bench but make no pressure when in the gas tank.
fuel pump dakota-sd44d5iihse5k0tgntjs1xio-1-0.jpg

May 09, 2017 | Dodge Cars & Trucks

1 Answer

97 ford ranger 4cyl starts and immediately dies. Has some fuel pressure, but haven't put a pressure gauge on it


If it dies immediately when you remove the starting fluid the issue has to be with fuel delivery.

Mar 31, 2017 | Ford Ranger Cars & Trucks

2 Answers

1999 chrysler 3.5 lhs fuel not going to injectors


Then your fuel pump is not working, or your fuel filter is blocked. You will probably have to check your fuel pump circuit if you have no fuel pressure in the fuel rail, where the injectors sit. There is a fuse for the pump, usually in the under hood fuse/relay block. That is probably also where the fuel pump relay is located. You should hear or feel this relay click when the ignition key is cycled from off to on. Also, when the key is turned to on, you should hear the fuel pump in the gas tank turn on for about 2 seconds. This will put the pressure in the gas in the fuel rail, for starting the engine. If you don't hear the pump turn on for that 2 second period, it is probably a bad fuel pump. But know the fuse is good first.

Sep 25, 2015 | Chrysler Cars & Trucks

1 Answer

Engine quit and will not restart. No fuel pressure and the fuel does not run when key is turned on?


Did U check the power in the pump conection?
Check the filters.
Conection malfunction!
Sametime can be a dirty fuel tank .

Mar 03, 2015 | 2008 Chevrolet Cobalt

2 Answers

On a 2004 Jeep Wrangler 4.0 it take about 30 sec to start I put a fuel gauge and it takes a while for the fuel to reach 45 psi I have to cycle the key on n off about 4 times then it will start after i


is this a double post, i just posted a huge full answer
just a while ago, on gc.
for same pressure..
the pump check balls bad,or fuelpumpreg inside.
or the injectors leak
last poster too, said awhile, 1s, 1min, 1hr what is while>
spec. is 1/2 min leak down or longer.
so>? but keyon 4 times, is fail

unplug injectors, (elect) is pressure 49 +-5 psi? and holds.
now, bingo.
leak down fails now.
yes the filers are all in tank
yes, the injectors can leak

un connect fuel rail hose, to rail block it.
hold pressure now
yes, bad leaking injector
no,, pump assy bad. assembly, why takes bench tests.

Jan 20, 2015 | 2004 Jeep Wrangler

1 Answer

No power after 4000 rpms


This sounds like a fuel pump or fuel filter problem.
The 1988 Jetta has two fuel pumps. The "main" one under the car directly in front of the gas tank on the right hand side. The other fuel pum is in the tank. You can access that fuel pum by removing the round access panel in the trunk towards the back seat.

You'll need a fuel pressure gauge. You can usually borrow one from a large auto parts chain store.

FUEL DELIVERY & SYSTEM PRESSURES
System Pressure
Connect Pressure Gauge (VW 1318) between line from fuel distributor to cold start valve and
test port connection on lower chamber of fuel distributor, using Adapter Fittings (VW 1318/5).
Test port is sealed by a threaded plug. Bridge fuel pump relay with Jumper Switch (US 4480/3).
1.
Disconnect wiring from Differential Pressure Regulator (DPR). Open valve on pressure gauge
(points at cold start valve line when open) and activate fuel pump. System pressure must be 75-
82 psi (5.3-5.8 kg/cm2 ). If pressure reading is low and fuel pump delivery quantity is good,
replace pressure regulator.
2.
If pressure reading is high, disconnect fuel tank return line from DPR. Repeat test. If reading is
correct, check for plugged return line. If reading is incorrect with line open, replace DPR.
3.
Differential Control Pressure
Close valve on pressure gauge. Activate fuel pump with jumper switch. Leave DPR
disconnected. DPR reading should be 2.9-7.0 psi (.2-.5 kg/cm2 ) less than system pressure. If
pressure is incorrect, disconnect lower chamber return line and measure volume.
1.
Close open port to diaphragm pressure regulator. Activate fuel pump with jumper switch. Fuel
volume should be .14-.16 qts. (.13-.15L) for period of one minute. If volume is correct, replace
DPR. If volume is incorrect, replace fuel distributor.
2.
Close valve on pressure gauge. Install Test Harness (1315A/1) between DPR and vehicle
harness. Set multimeter to DCA 200 mA scale. Connect multimeter to test harness. Disconnect
wiring to coolant temperature sensor. Connect 15 k/ohm side of Test Resistor (VW 1490) to
sensor wiring.
3.
Turn on ignition and fuel pump. Differential pressure should be 10-17.5 psi (.7-1.2 kg/cm2 )
less than system pressure. DPR current should be 50-80 mA. If pressure is incorrect and current
is correct, replace DPR.
4.
If both pressure and current readings are incorrect, remove test harness from DPR. Ensure
resistance of DPR is 17.5-21.5 ohms. If reading is incorrect, replace DPR.
5.
If reading is correct, check ground from temperature sensor to cold start valve. If ground is
good, check power supply fuse. If fuse is okay, check terminals on ECU connector. If connector
is okay, replace ECU.
6.
Residual Pressure & Internal Leak Testing
Open valve on pressure gauge. Operate fuel pump for 30 seconds. Pressure can drop to a
minimum of 38 psi (2.7 kg/cm2 ) after 10 minutes. If pressure drops below specification, inspect
fuel pump check valve and all fuel fittings for leakage.
1.
NOTE: Pressure and leak testing does not include checking cold start
valve.
FUEL INJECTION SYSTEM - BOSCH CIS-E -1988 Volkswagen Jetta Page 1 of 3
http://www.ondemand5.com/mric/common/asp/printart.aspx 11/25/2011
If there are no leaks, check airflow sensor plate clearance. If plate clearance is correct, replace
diaphragm pressure regulator and repeat leak test. If pressure drop is not within specification,
replace fuel distributor "O" rings.
2.
Transfer Pump Delivery Volume
Check voltage supply to pumps. Connect Jumper Switch (US 4480/3) in place of fuel pump
relay, on relay panel. Remove fuel filler cap. Disconnect and plug off Black fuel line from
sending unit.
1.
Connect hose to sender port and place in measuring container. Turn on fuel pumps. Minimum
transfer pump delivery volume should be .42 qts. (.4L) in 10 seconds. Reconnect fuel line to
sender.
2.
Main Pump Delivery Volume
Check transfer pump (if equipped) and fuel filter. Disconnect fuel return line and place in
measuring container. Switch on fuel pump with jumper switch. Check fuel pump delivery
volume for 30 second period. Delivery rates are given with voltage reading at pump as volume
will change with different voltages.
1.
Minimum delivery volume for Fox, Quantum and Quantum Syncro models is .71 qts. (.68L) for
30 seconds with reading of 11.4 volts at fuel pump. Minimum delivery volume for other models
is .62 qts. (.59L) with 11.4 volts at fuel pump.
2.
Fuel Distributor
Check sensor plate adjusting lever and fuel distributor control piston for smooth operation.
Disconnect fuel injector lines at fuel injectors.
1.
Remove fuel pump relay and bridge fuel pump circuit. Use Jumper Switch (US 4480/3) in place
of fuel pump relay. When pressure has built up, turn off fuel pump. Move sensor plate from rest
position to end of travel.
2.
Uniform resistance should be felt during entire movement. No resistance should be felt on
quick return to rest position. Connect injector lines. Install fuel pump relay.
3.
Injector Quantity Comparison
Remove fuel pump relay, from relay panel, and install Jumper Switch (US 4480/3) in off
position in place of relay. Attach Fuel Quantity Analyzer (US 4480) to bumper and secure in
place. Remove injectors from cylinder head with fuel lines attached. Check and replace fuel
injector "O" rings as necessary.
1.
Check tightness of injector insert (2-piece inserts). If inserts are loose, remove and clean
threads. Use sealing compound when installing upper insert. Replace sealing washer that goes
against cylinder head below lower portion of insert. Lubricate injector "O" rings with gasoline
and install injectors, with fuel lines connected, into fuel quantity analyzer tubes.
2.
Ensure lines are not kinked or bent. Loosen fittings to align fuel lines and retighten. Remove
rubber boot from airflow sensor housing above sensor plate. Turn and lift setting screw and
adjusting slide of Sensor Plate Adjustable Holder (VW 1348/1) into upper position. This
simulates full throttle operation. See Fig. 11 .
3.
FUEL INJECTION SYSTEM - BOSCH CIS-E -1988 Volkswagen Jetta Page 2 of 3
http://www.ondemand5.com/mric/common/asp/printart.aspx 11/25/2011
Fig. 11: Sensor Plate Adjustable Holder (VW 1348/1)
Courtesy of AUDI OF AMERICA, INC.
Place sensor plate adjustable holder on airflow sensor housing with holder centered over plate.
Pointer on edge of holder base must point toward center of fuel distributor. Push adjusting slide
of holder down onto stop.
4.
Turn adjusting screw clockwise until magnetic end touches sensor plate retaining bolt. Activate
fuel pump with jumper switch. Turn adjusting screw of holder counterclockwise until any one
injector starts to deliver fuel. Turn off jumper switch and empty fuel quantity analyzer after
taking sample.
5.
Idle injection quantity is measured first. Lifting adjusting slide of holder to first stop simulates
idle position of sensor plate. Activate fuel pump until fuel level reaches 20 ml on scale of any
tube.
6.
Check that all injectors have identical spray patterns that are even and cone-shaped. If not, raise
sensor plate up quickly to full lift position and release. Repeat idle quantity test. Compare
amounts of fuel delivered by all injectors with analyzer held level. Maximum difference in
delivery quantity between injectors is 3.0 ml of fuel.
7.
If fuel delivery quantity differs between high and low levels by more than 3.0 ml, interchange
injectors and repeat test. If difference of delivery quantity changes with injectors, replace
injectors. If difference of delivery quantity does not change with movement of injectors, either
fuel lines are pinched or fuel distributor is defective.
8.
Measure full throttle injection quantity. Empty analyzer into fuel tank and reinstall injectors in
analyzer. Lift adjusting slide of holder to last stop to simulate full throttle position of sensor
plate. Activate fuel pump with jumper switch until fuel level reaches 80 ml on scale of any tube
of analyzer.
9.
Check that all injectors have identical spray patterns that are even and cone-shaped. If not, raise
sensor plate up quickly to full lift position and release. Repeat full throttle quantity test.
Compare amounts of fuel delivered by all injectors with analyzer held level. Maximum
difference in delivery quantity between injectors is 8.0 ml of fuel.
10.
If fuel delivery quantity differs between high and low levels by more than 8.0 ml, interchange
injectors and repeat test. If difference of delivery quantity changes with injectors, replace
injectors. If difference of delivery quantity does not change with movement of injectors, either
fuel lines are pinched or fuel distributor is defective.
11.
Check fuel injectors for leakage immediately after delivery quantity test is complete. Set sensor
plate in rest position. Activate fuel pump with jumper switch for 2 minutes. Injectors should not
drip. Replace injectors that drip.
See image. Fuel filter is probably located on the frame between the engine and fuel tank.
8_24_2012_11_36_10_pm.jpg8_24_2012_11_36_30_pm.jpg

Jul 03, 2012 | 1988 Volkswagen Jetta

1 Answer

My car has set for a couple years. Has spark, no fuel to inlet side of fuel rail. Fuel pump? How to test and how to replace? Do I have to remove the fuel tank?


I have pasted pump removal procedures below, but recommend you read the following before going after the pump:
A good first check if fuel delivery problems are suspected is to spray some starting fluid into the intake system while someone cranks the engine. If the engine starts or tries to start with starting fluid, it is not getting fuel. In most modern cars, the fuel pump is inside the gas tank and is also usually sold with the fuel gage sending unit--an expensive and laborious R&R job. If the pump is working, you should hear it at least momentarily when the key is turned to the "on" position. If the pump is not working, the cause could be a fuse, a relay, an accident "kill" switch that needs resetting, or the pump itself. You'll want to rule out all of the inexpensive possibilities first. Use your owners manual (you can often find these online if you don't have the original) to locate the applicable fuse, relay, and/or cutoff switch. To check the relay and ignition switch, follow procedures at http://www.fixya.com/cars/r6022358-relay_check. You can also check for voltage at the pump connector with a test light. (Note, the Talon uses the MFI relay to power the fuel pump. This is a 9-terminal relay and may be difficult to troubleshoot using the above link).
Assuming your pump works, fuel still needs to get to the engine. A clogged filter will certainly limit fuel flow, but will rarely prevent a car from starting. That said, filter replacement is an inexpensive bit of maintenance. Most likely cause of fuel not getting to the engine when the pump is working is the fuel injection system (not an issue for carbureted engines). Injection systems are beyond the scope of this tip, but there are a couple things you can check. Many anti-theft systems cut off the injectors when activated. If you have such a system, make sure your anti-theft system has not been activated. Also, the injectors require a certain level of fuel pressure. Though your pump may be working, it may not be producing pressure. If possible, have your fuel pressure checked or borrow the appropriate tool to test the pressure. Always check pressure at the fuel rail, as some designs include a separate regulator that is typically in the line in the engine compartment. The injectors may be controlled by an injector module or directly by the engine or powertrain control module/computer. The signals sent to the injectors can be checked using a special tester or oscilloscope. A simple but crude method of checking injector operation is to put a long screwdriver on the injector body and hold the handle to your ear while someone cranks the engine. If the injectors are working, you should hear the solenoid click once every 2 revolutions.

Finally, if you are getting fuel to the engine, make sure it isn't old or contiminated.


jturcotte_162.gif



Fuel Pump removal Instructions from autozone.com
1990-94 Vehicles
EXCEPT AWD MODELS

See Figures 1, 2, 3 and 4
  1. Properly relieve the fuel system pressure as outlined earlier in this section.
  2. Raise and safely support the vehicle.
  3. Drain the fuel from the fuel tank into an approved gasoline container.
  4. Remove the electrical connectors at the fuel pump. Make sure there is enough slack in the electrical harness of the fuel gauge unit to allow for the fuel tank to be lowered slightly. If not, label and disconnect the electrical harness at the fuel gauge unit.



CAUTION Cover the high pressure fuel hose with rags to prevent splash of fuel caused by residual pressure in the fuel pipe line.

  1. Disconnect the high pressure fuel line connector at the pump.
  2. Loosen self-locking nuts on tank support straps to the end of the stud bolts.
  3. Remove the right side lateral rod attaching bolt and disconnect the arm from the right body coupling. Lower the lateral rod and suspend from the axle beam using wire.
  4. Remove the holding bolt and gasket from the base of the tank.
  5. Remove the fuel pump assembly.

Nov 14, 2010 | 1990 Eagle Talon

2 Answers

FUEL INJECTORS WON'T LET FUEL PUMP OUT


Check your fuel filter and see if fuel is getting through it. You will know whether to look forwards or backwards after looking at the filter.

If you have the switchable gas tanks check the switch. Usually one side will always work, but if it came apart inside it may block the lines.

Since you have pumps at the tanks you should be pushing fuel, not like a diesel that pulls fuel. I would say a TPS (throttle position sensor) could be bad as it tells the injectors to let the gas in, but you say the injectors are dry. When you test, block the TPS open a bit or test for fuel before the injector rail.

Mar 25, 2010 | 1988 Ford F 150

3 Answers

Where is the fuel relay located in Mazda mx6 1988?


On that one it actually called circuit opening relay under left side of dash in fuse relay box


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Feb 08, 2010 | 1988 Mazda MX-6

4 Answers

Low fuel pressure


U 1st need to test fuel pressure at the fuel pressure test port on the top of the engione in the fuel supply rail to the injector tops, it looks like a metal tire vale stem, u will need to buy a special fuel pressure tester to do this test. U should have around 55-60 PSI at idle, it should go up when u gun the engine but never go down, if it goes down the fuel filter or pump are suspect.

Apr 29, 2009 | 2001 Chevrolet Malibu

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