Question about 2002 Jeep Grand Cherokee

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Long crank time but always starts

Can take upto 30 seconds or so to start. Checked all obvious things like fuel pressure, spark plugs, bad gas, fuel filter

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It may have good fuel pressure while running or cranking over, but sounds like it is not holding the pressure in the system.
Could be a weak fuel pump, and or fuel pressure regulator.

Posted on Mar 11, 2009

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Posted on Jan 02, 2017

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I have a Ford Expedition XLT with a crank no start I changed the fuel pump and check all the fuses can somebody else tell me what may be the problem


A "crank, no start" condition is usually because either gas or spark has been lost. You changed the pump, but now you need to verify that gas at the proper pressure is at the engine's fuel rail. You would need a fuel pressure gauge tester for that- Autozone and others loan them, too. Or, do you hear the pump turn on with the key cycled to on, not start? It should turn on for 2 seconds to pressurize the fuel lines and the fuel rail. If it turns on, probably at proper pressure since you have a new pump, but never hurts to check the pressure. If it doesn't turn on for those 2 seconds with key in ON, then you will have to diagnose the fuel pump circuit. Post back for that.
Next thing to check is spark. Buy a simple spark tester at the parts store (real cheap) and hook it up to a spark plug wire, crank the engine over, and watch for a strong blue spark. Good idea to check more than just one plug wire-sometimes a bad coil will lose spark at a particular cylinder. If you have good spark (a blue, snapping spark), then assume the ignition system is good, and so then you would need to verify the injectors are putting gas into the cylinders-post back if you need to test the injector circuit.
If no spark, then the ignition system has a failure-this can be from a bad Ignition Control Module, a bad crank position sensor, or cam position sensor, among other things. Good luck.

Apr 25, 2017 | Ford Cars & Trucks

1 Answer

Hard to start fuel pump has been checked


Need much more information about the car, age, care it has had. Only 4 things cause hard start. Lack of Air coming into the intake, Lack of Fuel, Lack of spark, Lack of torque from the starter. Assuming the starter is good & battery, and fuel is there, i would check the spark plugs, and spark output. If it has a lot of miles check the Air Filter. The injectors could also be clogged. I always dump 2 bottles of injector cleaner in the tank every 2 months. If you have never done this i would go for 3 bottles. Again the spark cannot be weak, fuel pressure cannot be low, or have restrictions like dirty a fuel filter, or dirty fuel injectors or even bad Gas. And last a computer problem providing incorrect timing to the Injectors or Spark Plugs.

Apr 23, 2016 | Nissan Pathfinder Cars & Trucks

4 Answers

93 Buick PA ran out of gas, batt died. Change battery and put gas,new fuel filter,New coils and base spark wires,cam and crank censor,fuel pump /sending unit still no start


Check for a good spark at the plugs ,if ok check fuel pressure and fuel flow. fuel pressure should be around 300 kpa, Flow around 500 ml, in 30 seconds.

Feb 23, 2015 | 1993 Buick Park Avenue

1 Answer

What else could cause a no start condition turns over ok occasionally it will fire


Fire when? as you release the key? If so replace the ignition switch. If you have fuel and spark it should start unless it is way out of time or the security is set. Another thing to consider is the spark plugs. Since you have had so much gas threw the engine, they may be fouled out.

Feb 05, 2015 | Cars & Trucks

3 Answers

98 ford ranger idles shaky give gas smooths out floor it revs fine get on road real sluggish and popping only about 45 will only go up to 55 aand more gas u give it will pop and hesitate mind 1 though 3...


Several things may cause this: 1. Bad distributor cap. 2. loose connections on one or more spark plug wires. 3. Cracked coil. 4. Bad injector. 5. Cracked spark plug.
So did you recently pressure wash your engine? It is possible if you did that the cold water may have cracked a spark plug ceramic.
So this is a start. A place for you to begin to look.

Jan 08, 2015 | 1998 Ford Ranger

1 Answer

WHEN I GIVE IT GAS IT START TO MISFIRE


Misfires are caused by one of 3 things-gas, spark, or compression-one of those is the problem. For gas, check the fuel pressure and see if it is at the right pressure for your car. Low fuel pressure will cause misfires. If pressure is good, it could still be an injector problem, like a clogged injector. If low pressure, suspect the fuel pump or the fuel filter.
For an ignition spark problem, check your spark plugs. Pull them out and inspect them for broken or cracked plugs, check the spark plug gap, check for oil fouled plugs. You may be able to isolate the misfire to a cylinder or two by the plugs condition. A misfiring plug or cylinder should show more black, sooty deposits than the other plugs. A normal firing plug will have a tan or brown colored insulator on the end with very little deposits. If the plugs are okay, clean them a bit if needed, and check for spark on the spark plug wire ends with engine cranking. Buy an inexpensive spark tester, or hold each spark plug wire metal end terminal 1/4 inch from a ground on the engine block, while cranking the engine. Wear a heavy glove to avoid getting shocked. Check that every cylinder is getting a strong blue spark to eliminate ignition as a problem. A weak, yellow or orange spark is an ignition problem, possibly a bad coil, or other ignition part.

If spark and gas is good, you may need to check engine compression. Any cylinder that has significantly lower compression than the other cylinders will cause a misfire, and set a misfire code. You should check for any trouble codes in the engine computer. A code reader or scanner would have to be connected to the diagnostic connector under the dash. What is "significantly lower" compression? About 15-20% less compression. Say you checked and had 150 psi compression in most cylinders. If one had 20% lower compression ( 150 X 20%= 30 psi, 150 -30 =120 psi, or same as saying 150 X 80%= 120 psi.), a condition like that can cause a misfire. I hope I have made sense here. Good luck, and post back what you find, or if any questions.

Apr 10, 2014 | 1998 Ford Windstar

1 Answer

Fuel pump


Testing of the fuel and ignition systems is in order. Intermittent problems need testing when the problem is present, otherwise it won't help find the problem.
I would start by checking for spark on a spark plug wire (or two or three plug wires, in case it may be a bad coil), during those times when it won't start. You need to see a blue, snapping spark to verify ignition system is working.
To check the fuel system, have the fuel pressure checked, and the injector circuit checked. Good that you hear the pump, but you don't know if fuel pressure is correct, or if fuel is getting into the cylinders. One short test is to spray starting fluid or carb cleaner into the intake while engine is cranking. If engine fires up for a few seconds, you know it is a gas related problem.
If ignition system is the intermittent problem, could be failing coil or coils, ignition module, crank position sensor, even the computer, or a wiring problem like a bad connection. Testing of each component will be required, or you could start throwing new parts at it, like many people do, until you find the bad part. Find a reputable mechanic-there still are a few, lol.

Jul 30, 2013 | 1998 GMC Sierra

3 Answers

My 2003 ford focus se.sounds like it wants to start but wont.is that my fuel pump?


If you open your fuel cap and have someone turn the ignition on you should hear a buzzing noise in the gas tank for two seconds. That's your fuel pump. Also go to the pressure regulator under the hood, access the pressure tester valve, press on the valve and have someone crank the engine for one second. You should get gas coming out.

May 29, 2011 | 2003 Ford Focus

1 Answer

When i try to start my 99 vw passat gls v6 it will barely start and stay started for possibly 5 sec with no presure on gas pedal if i keep my foot on the gas it will stay running but the rpms wont rise...


it hard to say there few things that could cause this but sounds like it a Fuel issue
Possible bad fuel pump totallly clogged fuel filter bad injectors Out of gas etc.
first thing you need to do is check your fuel pressure ( I bet it be low ) if it low check fuel filter if fuel filter good replace fuel pump
If Fuel pressure is within Specs then test the injectors
if Fuel pressure is ok and injectors test out ok then check ignition system (spark plugs, coils, module etc)

May 11, 2011 | 1999 Volkswagen Passat

2 Answers

1997 chevy blazer 4.3L cold hard start have to add gas to carb to start hot start is fine changed fuel filter and battery new battery it will eventually start but runs down battery.


There may be a problem with the fuel pump itself or the truck may need a basic tune-up. Those would be the first two things to check. Pull a spark plug and see how it looks. If it is in really bad shape, it won't be able to fire properly and this will lead to hard starting. A set of plugs and plug wires can really wake up an older engine. The second thing to check if those are ok would be the fuel pump itself. It may be weak and take longer to build proper fuel pressure. This will have to be checked by a mechanic. The fuel pressure is very high and there are special tools that will be needed.

May 04, 2011 | 1997 Chevrolet Blazer

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