Question about Cars & Trucks

1 Answer

Replacing fuel pump

There is a part missing on the new one and I don't know what it is for

Posted by on

  • Jordan Jan 10, 2013

    There is a hole in the top of the new fuel pump in the old one there is a cap with a hose attach to it but the new one doesn't come with a replacement cap

  • Jordan Jan 10, 2013

    Ok it's a fuel tank vent valve that I need



1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Cars & Trucks Master
  • 937 Answers

This web will tell you how to replace a fuel pump

Posted on Jan 10, 2013

  • Jordan Jan 10, 2013

    Replacing the fuel pumps not the problem I know how to do that but there is a part not on the new one I don't know why tho it is just a hole were it should be



6 Suggested Answers

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

  • 984 Answers

SOURCE: My car died unexpectantly while


Improve the experience for everyone by voting!

This is how your problem is solved in my shop. Out of the box, I'd say that you have a problem with the fuel management system. However, there's a good chance that it's something simple and inexpensive like a clogged fuel line or water in the fuel tank.

First a little background for your edification. You may be aware of all this but we've never done business before and all assumptions are off the table.

For an engine - make that any engine and irrespective of manufacturer - to run, you need three things to happen inside the engine, compression, fuel and ignition, without any one of these components the engine will not run.

Compression - Engine compression caused by crankshaft rotation and pistons moving up and down inside the engine block. If the timing belt or timing chain fails it will cause the camshaft to become out of correlation with the crankshaft or allow the camshaft to stop rotating. Either of these conditions will cause the engine to lose compression and sometimes cause internal engine damage.

Fuel Delivery System - The fuel system includes: fuel pump, fuel injectors, pressure regulator, fuel filter and pressure lines. This system is used to supply fuel under pressure to the fuel injection system, the lack of fuel pressure or volume will cause the fuel delivery system to fail and the engine to stall or not start.

Ignition Spark Delivery System - The ignition system components include: spark plugs, spark plug wires, distributor (if applicable), crankshaft angle sensor, camshaft angle sensor, ignition coil, ignition module, knock sensor and PCM (powertrain control module). The engine relies on the ignition spark to be delivered to the combustion camber at the correct time. If the ignition spark stops or is delivered at the wrong time the engine will not run or run poorly.

If Your Engine Cranks but Does Not Start or is blowing fuses, follow this Troubleshooting Guide

Most vehicles operate by the same principle; basic troubleshooting procedures apply to most cars.

For a lot of this you're going to need a code scanner. AutoZone will loan you one for FREE.

Step 1: Anytime you have a problem with electronically controlled components such as an engine, transmission, ABS brake, or SRS (supplemental restraint system, Air Bag) inspect all fuses using a test light and check the under hood power distribution center and under dash fuse panels. If all fuses test okay continue to the next step.

Step 2: To check for problems with electronically controlled components such as an engine, transmission, ABS brake, or SRS (supplemental restraint system, Air Bag) and the fuses test okay a trouble code scan is needed to identify any system trouble. Use a simple scanner tool to retrieve trouble codes and see if they relate to the specific problem, like a crank angle sensor failure code. If the trouble code present does not pertain to the immediate problem like an EVAP code ignore it until a later time, after the car is running.

The reason we repair non-related codes after the engine is running is because sometime false codes can be triggered by the engine not running. Once the engine is running again the code present might cycle and turn itself off. You might say "if the engine doesn't run shouldn't it have a trouble code?" Sometimes conditions occur that will not be detected by the computer, example: if the fuel pump fails the computer cannot detect the failure, so the engine doesn't start and the computer thinks everything is okay with no codes. If no trouble codes are present proceed to the next step.

If you have problems understanding the code scanner and its readings, click on the following link:

Bree Automotive Repair Information Using a Code Scanner. Use my personal code: carrepair


Posted on Jun 05, 2011

  • 5370 Answers

SOURCE: I have a 97 Pontiac Bonneville. The engine will

The fuel pump and o2 sensors both, needs to be replaced.----------To confirm the fuel pump issue try this.spray starter fluid on the throttle body and see if car starts and runs fine with starter fluid sprayed.Then it indicates fuel pump is faulty.--- Do this test when you face this stalling and no start problem.-If the engine runs smooth with starter fluid sprayed, then its faulty fuel pump and filter.The filter is already replaced, so get the fuel pump replaced too.--------Also if possible get the fuel pressure checked.This will also help.----------The o2 sensors are before and after catalytic converter.-------Both the sensors are to be replaced.------ And as per you mentioned your problem, its quite possible that faulty o2 sensor will cause this problem.------ O2 sensor is the part which sends signal to ECM( the cars computer).It sends signal to computer about fuel / air mixture.How and when to send fuel to engine.--------- If o2 sends stops sending signal to cars computer then it will not send the fuel to engine.------- In your case the o2 sensor is getting overheated and this is stopping the o2 sensor from sending signal to ECM.But when your car shuts off the sensor gets cool and again it tarts working.------ So as per problem, get both the o2 sensors checked and replaced.---------- Also get the crank sensor checked.------------

The cylinder misfire occurs due to few possibilities.There are few possible parts that are to be checked.The possibilities are as follows:--

1) Faulty spark plugs or wires. 2)Faulty coil (pack).3) Faulty oxygen sensor(s).4) Faulty fuel injector(s). 5) Burned exhaust valve. 6) Faulty catalytic converter(s). 7) Stuck/blocked EGR valve / passages. 8) Faulty camshaft position sensor.

if all the above mentioned parts checked out ok or already replaced and still the same error code shows up and same problem is noticed then its faulty ECu/ECM( electronic control module/unit).Also known as cars computer.


If you notice symptoms such as the engine is stumbling or hesitating, check all wiring and connectors that lead to the cylinders (i.e. spark plugs also check the coils (a.k.a. coil packs). In some cases, the catalytic converter has gone bad. If you smell rotten eggs in the exhaust, your cat converter needs to be replaced. Also if the faulty fuel injectors are dirty / clogged or cracked they will block the flow of fuel and causes misfire.

Random misfires that jump around from one cylinder to other. The underlying cause is often a lean fuel condition, which may be due to a vacuum leak in the intake manifold or un-metered air getting past the airflow sensor, or an EGR valve that is stuck open.---
To check fuel injectors:----Put a long screwdriver directly on the injector while the car is running. Hold the handle up to your ear. You should be able to hear a rhythmic clicking sound. If you do, your injector is good. Hearing a clunk-clunk type noise means you have found your problem. Hearing silence or unusual clicking patterns means either the injector, wires or plunger may be bad or sticking. You will either have to clean or replace them.


Getting this possibilities checked,will confirm the fault.This should help.Thanks.,Helpmech.

Posted on Jun 20, 2011

  • 5370 Answers

SOURCE: Car will turn over but won't start. Through the

No noise from fuel pump when you turn over the car .First thing get voltage at fuel pump relay checked, is there 12 volt to the relay.If no, then problem is again the relay.--------- To reconfirm the problem, try other test, that is remove the relay and by pass the relay terminals with a jumper wire .Then with 12 volt external battery give power to fuel pump connector and see, if the fuel pump starts, then its clear that fuel pump relay is faulty.----------- Also other problem can be fuel pump inertia switch.If the inertia switch is faulty then also fuel pump will not start.-------- The fuel pump relay on a 1995 Ford Explorer is in the power distribution
box, in the engine compartment, driver's side near the firewall.----------
The fuel pump inertia switch is in the right front passenger area
it is below the dash but above the carpet in the right hand corner.--------
Its a push button type inertia switch.
Fuel Pump Activation
When ignition switch is turned to START position, PCM operates fuel pump relay to provide fuel for starting engine. PCM senses engine speed and shuts off fuel pump by opening ground circuit to fuel pump relay when engine stops or engine speed drops to less than 120 RPM. When ignition switch is in ON position, EEC power relay is energized (contacts closed). Power is provided to fuel pump relay and timer in PCM. Fuel pump receives power through fuel pump relay contacts.
Inertia Fuel Shutoff (IFS) Switch
All models use an electrical interrupt switch in fuel system. During a collision or vehicle rollover, electrical contacts within inertia switch open, shutting off fuel supply to electric fuel pump. Fuel supply is interrupted even when engine is running.
A reset button is located on switch assembly. If electrical circuit trips, vehicle will not restart until switch is reset. Fuel system should be inspected before resetting switch.
IFS switch is located under instrument panel, near right side of transmission hump.
----------- If the fuel pump relay, the inertia switch and fuel pump all checked ok, and fuel pump is working with direct 12 volt source to fuel pump.Then problem relates to computer.The computer (power control module, PCM) is faulty and has to be replaced.--------- This will help.Thanks.Helpmech.

Posted on Jul 17, 2011

Testimonial: "Thanks. That was the best answer yet.I didn't want to hear that the PCM might need to be replaced but the car has served it's purpose through the year"

  • 2217 Answers

SOURCE: intermitten starting problem. Sometimes will not

Are you sure its not the anti theft security system shutting you down. Look for an indicator light that says "security". If you see that light, go to this link for info and answers.

Posted on Aug 02, 2011

  • 1 Answer

SOURCE: Replaced fuel pump , replaced distr cap &

My safari work's good but yesterday I parking in my spot and all night was raining then in the morning wasn't star it up

Posted on Dec 04, 2011

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

I have a 2002 buick rendezvours my car won't start

Did the people that told you to change the fuel pump
diagnose the entire electrical system for the fuel pump
or just guess at your expense?

If your the one working on your own car, then I have to say
if you don't have factory diagnostic manuals,wiring diagrams
& experience, not only car repairs but basic electricity, your
in trouble, because you have no reference material & no way
to know where to start testing

After 1996, the car has pretty much gone to the repair shops,
as most people never stayed up with new technology

If the new pump was installed by a repair shop,then you don't
need me to tell you the problem.
The shop failed to properly diagnose & resolve & that may be
what they do alot, as they are not up to speed

Oct 06, 2012 | Cars & Trucks

1 Answer

I cannot start. Has been acting up and missing somewhat lately but after sitting for 7/8 days it just spins. No attempt to start.

Check Fuel Pressure -- at the schrader valve on engine
fuel rail -- with a gauge 38 to 42 lbs approx

Listen by the fuel tank-- for the pump to come on,have someone
cycle the key on & off

Checking Spark will be a challenge if you have individual coils
Checking the Crank Sensor also an issue checking

Do not throw parts at it

Check for codes if you have a MIL Lamp lite on dash

Acting up lately & possibly missing ,troubles me, because
that is unacceptable with my vehicles. I don't go an hour
& I get a start on those type issues, unless it is raining or
lots of snow coming down

I don't see the no start connected to other issues, unless
you have an ignition module vs: cop coils & it is dead

Sep 13, 2012 | 1999 Ford F150 Regular Cab

1 Answer

1999 mercury villager starts and runs good until it warms up then starts to miss and backfire on acceleration, why

When you get any codes, you do not replace parts
related to the codes

Your old & new knock sensors worked as they should

Did you not think to diagnose why they reported a knocking

Even if a sensor does fail, you still have to know
what they do,how they work & how to test them

If you don't have the abiltity to test components,then leave
todays technology to a repair shop

Things like worn out spark plugs,worn & jumped timing belt,
low fuel pressure,old 100,000 mile O2 Sensors,vacuum leaks,
clogged exhaust convertors,overheating,are what you should be checking.

If you always go over what you do know & not look directly
for the current issue,you will eventually find your main problem,
provided you have factory service manuals & study a few hours a month, year round. If you don't know how it works,you can't
diagnose it.

Aug 31, 2012 | 1999 Mercury Villager

1 Answer

2001 nissan maxima engine misfire

The Fuel Pump, I assume failed & was another issue

The Fuel filter is changed every 3 years, as preventative

The Codes for the most part are O2 Sensors, that are over six
or seven years old & over 100,000 miles & should be replaced
as preventative maint or if they fail ,sooner

You don't throw out any what if senerios, or replace any parts
in an effort to resolve anything

You component test & replace only failed parts, related to the codes
& system that has a fault & drivability symptom

You should know if the spark plugs are over 3 years old

Clean the MAF Sensor & check for vacuum leaks on the entire car

Aug 01, 2012 | 2001 Nissan Maxima

1 Answer

I just replaced the ignition module the ignition coil the throttlr positioning sensor and tje coolant temp sensor.on my 1995 pontiac trans sport 3.1. It also has a new battery and it still wont start. Do I...

Have you checked for spark or fuel pressure? If your missing spark the solution may be as simple as a new crank sensor. If you don't have fuel pressure than you might have a bad fuel pump. Have you tried to start the car with a couple shots of carb spray into the throttle body? If it starts than we can reasonably assume you have spark and are missing fuel. Let me know which of the above you are missing and I'll be a happy to get you pointed in the right direction.

Feb 26, 2012 | 1995 Pontiac Trans Sport

1 Answer

Fuel pump won't run unless engine is cranking, but won't start

Are you sure it's running when cranking? It should have come on when key turned on.
This is for camrys up to year '91. It may apply in your '95, also. Check the 7.5 amp ignition fuse and the 15 amp EFI fuse and the EFI main relay, all located in the fuse box next to your battery. There is also the circuit opening relay tied in to fuel pump operation. It is usually found under center of dash. It is usually not the problem, but it is part of the checks for fuel pump operation.
If your car has a " check connector" or "service connector" (also called a fuel pump check connector) under hood on driver's side near the firewall (a little 1 inch cube with a cap on it), then bridge terminals +B and Fp with a jumper wire. Turn key to on (don't start car). The pump should come on. Listen for fuel return noise from the fuel pressure regulator, and verify pressure in hose from the fuel filter. If nothing, check those fuses above. Here is how power runs to pump: Battery to 40 amp main fusible link-to 15 amp EFI fuse-to EFI main relay-to circuit opening relay-to fuel pump-to ground. Ignition switch and the computer (ECU) work the relays to pass power to pump. Hope this helps some, Randy. Good luck.

Nov 10, 2011 | 1995 Toyota Camry

2 Answers

I have trouble code p3016 on my 2004 Ford ranger edge 3.0 liter v6 I've tried new plugs, wires ignition coil, throttle positioning sensor and I've cleaned out the idle air control valve, replaced...

What you have done so far is throw parts at your truck,
without vehicle knowledge.

If your going to work on your own vehicles ,spend the big
bucks at Helm.Com & buy the factory Powertrain Control/
Emissions Diagnostic Manual for year 2004 ford vehicles

You surely had to know as you proceeded, that all those parts
didn't fail at once & you tested nothing, to determine they were
in need of replacment.

Now you need to know why you have a PO316

Air,fuel,spark or vacuum leak.

Not easy to diagnose if you don't work at it for a living

Sep 16, 2011 | Ford Ranger Cars & Trucks

2 Answers

Why is my 1995 3.4 liter 6 cylinder Pontiac firebird less fuel efficient than it was 2 months ago and how do i change the fuel pump

I don't know why its not fuel efficient. But the fuel pump is inside the fuel tank. you should not attempt to replace it yourself, and don't change it on a whim. prove that's its bad, its an expensive guess.

Aug 26, 2011 | 1995 Pontiac Firebird

1 Answer

Have a 99 suburban its been sitting for a year and had no problems but now the engine is missing changed plugs cap and rotor but same exact problem

If it's been sitting for a year with the same fuel, drop the tank and flush it and the fuel lines completely. Also take out the fuel pump and replace the fuel pump screen and don't forget to replace the fuel filter as well. Fuel WILL go bad sitting for that long.

Aug 19, 2011 | 1999 GMC Suburban

1 Answer

29@yahooi have a 2001 chevy cavalier. i let it get down on empty on gas &drove abt 10 to 12 miles on empty. then it quit &would not restart. it turns over like it wants to start what could b the...

Its possible that you have ruined the fuel pump by running it low on gas. Since the fuel pump is cooled by the fuel in the tank it is important not to run them empty.

There are a few things you can do
1. Listen for the sound of the fuel pump running when you turn the key on. It should run for 3-5 seconds.
2. Check for fuel pressure with a fuel pressure gauge.
3. check for spark.
4. Always post an engine size when asking for automotive advice. This will help give better, more clear directions and what, where, and how to do the above mentioned.

If you can't here the fuel pump running or there is no fuel pressure than your pump is likely bad. A new pump and fuel filter should have you back up and running.

If you here the pump or you have fuel pressure and you don't have any spark than there are several things that can cause this. I can run through those with you once you know whether or not you have spark.

If you're missing fuel or spark or both let me know and I will help you further.

Aug 16, 2011 | 2001 Chevrolet Cavalier

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

12 people viewed this question

Ask a Question

Usually answered in minutes!

Top Cars & Trucks Experts


Level 3 Expert

79865 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22326 Answers

john h

Level 3 Expert

14512 Answers

Are you a Car and Truck Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides