Question about 1993 Chrysler New Yorker

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3.8L V6 engine will turn over run 2 sec. shut down. replaced map, fuel inj., o rings, fuel pump, press. reg.,

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There's no use guessing anymore, have a quailfied independent repair shop diagnose and fix it. Stay away from chain stores. The money you have already spent guessing would have it fixed by now. Ck the ASD and Fuel pump relays, and go from there. Is there any tropuble codes in the ecm? On some of these you can turn the ign key on-off 3 times and read codes from the ck eng light.

Posted on Feb 06, 2010

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Replaced fuel pump,strainer,fuel filter,battery,computer,car will only start when you pour gas down air intake.


Sorry this vehicle does not have a fuel shut off switch or inertia switch > that's ford ! If you pour fuel in the throttle body an it runs It's something with the fuel system , an if you replaced the pump an filter an regulator , It has to be electrical ! did you check voltage at the fuel pump relay ? What engine does yours have , 2.5 , 3.3 L ? There is a in line fuse for the fuel pump near the relay ! There are four relays front right of engine compartment mounted on radiator support cross member . The one for fuel pump is the one on the inside . Fuse is near there an there is a connector not connected to anything ,this is for fuel pump prime . Jump battery voltage to it a see if it runs then ! or replace relay !

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2002 international 4400 truck W DT466e engine No start after replacing air brake compresser


It doesn't make any sense that you HP pump died while you were replacing the air compressor. Also, I don't think the crank circuit has to see oil pressure in order for the starter to turn...where would the pressure come from if not the pump rotating , how were you going to test for pressure if the starter isn't supposed to crank with a gauge installed? Does the A/C gear drive the oil pump?

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2002 cavalier 2.4 will not start fuel pump runs has spark


FUEL PUMP ONLY HUM'S FOR 2 SECONDS WHEN YOU TURN KEY TO ON, NOT START, POSITION. YOU CANNOT HEAR PUMP RUN WHEN CAR IS RUNNING ! THIS 2 SEC., IS THE PUMP PRIMING ITSELF TO START ENGINE. YOU MIGHT BE HEARING EITHER THE POWER STEERING OR WHATEVER, NOT THE FUEL PUMP!!!!!! GIVEN THE YEAR OF THIS CAR, YOUR FUEL PUMP COULD BE BAD, CHECK FUSES, RELAY, GROUND WIRES, TO PUMP, ALSO CHANGE YOUR FUEL FILTER !!!!! AIR FILTER ALSO !!!!!!! SPARK PLUG WIRES SHOULD ALSO BE REPLACED !!!!

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98 Pontiac Grand Prix GT 3.8 won't after engine warms up


crank pos. sensor or maf sensor ck. the fuel press reg. also

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I have a 1993 gmc 2500 van with a 4.3 v 6 engine stalls will not start. get no fuel at throttle body inj. if I add fuel to throttle body van will start and run as long as I give it gas . when allowed to...


You must have a leak or one of the lines are clogged. The reason it stays running when your on the gas is because it keeps the fuel pressure up. Then when it shuts off it loses all pressure in the line and the pump cant handle the initial start with the leak in the line.

Sep 14, 2010 | 1993 GMC G2500

1 Answer

Our 1999 Chevy Truck looses power after the engine warms up. We have changed the knock sensors, o2 sensors, catalitic converters, and the fuel pump relay? What are we missing?


Have you had the s10 scanned for the DTC codes. Auto Zone scan free of charge and this should help figure out why your loosing power when the engine warms up. You could have a faulty MAP sensor or a weak fuel pump, dirty fuel filter.

Not knowing what has been done, here is a few things you can do and check.

You may be weak on fuel pressure, even a couple of lbs low on fuel pressure can cause low performance.
Double check cold start cranking fuel pressure. If under 63-62 lbs you have problems. Run the full fuel pressure test and post back pressures.
Here is the guide lines on testing.
Check cold start fuel pressure.
Check engine running fuel pressure.
Check engine running on the road fuel pressure.
Then shut it off and watch for fast leak down.
Pinch off at rubber part or block off return line and check full pressure.
Later V6 and V8 gm engines should have 60-66 fuel pressure.
Cold start should be 64-65 lbs of pressure.
If you do not have full fuel pressure on a cold start the injectors will not squirt fuel.
Engine running should be 60-66 lbs pressure depending on engine load.
Full pressure with return pinched off should be 75-85 or more.
And if it has a fast leak down after shut off you have a leak.
Post back fuel pressure readings.

The 75-85 is only a check on the capable full pressure of fuel pump.
If you can not find the rubber return line check full pressure by plugging return line or just or the true full pressure can be taken direct at the end fuel filter.What are the pressure readings that you have done.
What are your cold start pressure readings?

You need 3 things.
Compression
Good hot blue spark to all plugs.
Good gasoline and proper fuel pressure. 63-64 lbs.
If you have all 3 then move on to injector pulse to all injectors.
I think each injector is on a separate driver on that one.
Check for pulse to all of them.

The next thing you can look at is the Cap and Rotor, inspect for any damages and corrosion which is common to accumulate in the distributor due the a clogged vent screen at the bottom of the distributor. That is where is ICM is located also and my be on it's way out and needs to be replace.

Best thing to do is check for any DTC codes at Auto Zone and that should help determine what is causing your loose or power. A bad fuel pump and dirty fuel filter will not trip any DTC codes.

Start with the simple and check all the fuses, the wire leads to the MAP sensor, it's located on the passenger side on the intake manifold by the throttle body. Check then check the distributor Cap and Rotor and replace, check the fuel pressure reading, and almost forgot to check the MAF sensor.

Try this in the mean time, turn you ignition to the run position "engine not running" and pull the fuse to your ECM for 1 min and place back in. Turn your ignition off for 5 sec and turn on again for 10 sec and then start the engine. It may stall out, let it. just start it again and let idle for 2 min and go for a test drive. This will reset your ECM to default and relearn all the sensors on the engine and transmission. Any DTC codes will have been erased and any DTC codes will be new to the issues your engine is having. Good luck and keep me posted, be glad to help you get your S10 running 100% again soon.

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1999 f350 diesel engine shut down, turns over but


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1994 Dodge Grand Caravan 3.0 V6 Runs fine for about 10 min after that engine bogs down like it is not getting gas. I have replaced the fuel filter, map sencor, and fuel pressure regulator as was suggested...


Have you put a pressure gauge on and then drive to see if pressure drops. If it does it is likely the pump. Sometimes these problems lead to it being the computer.

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1 Answer

Hard starting hot or cold. Battery and starter are fine.


check fuel pump relay/should run pump for two sec when key is turned on. try turning key on but dont crank did pump hum/if it did look towards leaky fuel inj./faulty pressure reg. poss clogged fuel filt.

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