Question about 1996 Jeep Grand Cherokee

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Injector 4 in ford diesel

Reading 4th injector circuit high what does this mean

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  • Jeep Master
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Reading what does that mean.
1:your read this in a book.
2: or the DMM voltmeter reading measured, 12v (high or hot)> did you?

Posted on Nov 27, 2013

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Posted on Jan 02, 2017

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SOURCE: my 96 v6 4.0 grand cherokee is reading these codes

douple ck all the ground wiresto engine,trans bell housing ,battery or frame/firewall look for any that may have separated from any pack of wires or broken off eyelets then thightnen all points,,.these grounds are very important to comp/injection controls and can cause a multi code problem like yours.

Posted on May 07, 2009

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I havve a2015 Ford F-350 6.7 diesel with a code p1556. What does it mean and how to fix it


P1556 - Cylinder 6 Injector Circuit Range/Performance
You need to have the injector on cylinder 6 tested. It is probably clogged.

Nov 12, 2016 | Ford Cars & Trucks

1 Answer

How to prime the injectors and fuel rail after replacing the injectors?


Electromagnetic or electronic fuel injectors are self-priming and all that is needed is to crank the engine, though I believe on later systems the injectors are coded and will not work unless the ECU has been informed the codes have changed. I think this applies more to diesels than petrol engines but on such matters I am not expert...

Staying with diesels for a moment - new injectors on either engine would usually mean fitting a new fuel filter. Sometimes this would require the primary diesel circuit to be bled in order for the high pressure pump to work.
The amount of starter cranking required can be cut by leaving each injector pipe loose in turn until diesel is dribbling from it.

Feb 20, 2016 | Cars & Trucks

1 Answer

There is supply of diesel fuel from the lnjection pump but it seems no diesel going inside the chamber,,


Not enough information. What vehicle? What year? What kind of injection system? There are basically two kinds of diesel injection - injector pump and common rail.
I did notice you talking about an injector pump, but both these systems need a high compression pump to operate the injectors. On the older systems, the injector pump is connected via a gear system to either the crank or the camshaft, and its task is to supply fuel to the injectors in very much the same way as a distributor does on a petrol car.
Now, do you mean the header pump that supplies diesel to the injector pump, or do you mean there is diesel coming out of the injector pump between the pump and the injectors?
On the other system, which I assume you are talking about, diesel is supplied to a high pressure pump which keeps a rail at high pressure. All the injectors are connected to this rail - from there the name "common rail" - and the timing is supplied by the Engine Control Module (ECM) via electrical impulses. Now ,if you have diesel supplied to the common rail but the injectors are not popping, the problem is most likely with the ECM.
However, there is no way of helping you unless you supply more information.

Oct 06, 2014 | Cars & Trucks

1 Answer

Po204


Well code 204 means the computer has detected a high or low resistance in the circuit for injector number 4. The problem could be in the wiring harness or the injector itself.
The resistance of the injector would be checked first.

May 10, 2013 | 2004 Ford Freestar

1 Answer

How do you remove the fuel injector on a ford 6.0 liter diesel engine?


V8 6.0L DSl Turbo VNP 1. Remove the valve cover 2 disconnect the fuel injector electrical connector 3 remove the bolts and the high-pressure oil rail 4 Caution, Do not attempt to apply battery voltage to the injector or damage to the fuel injector will occur. using a 19mm (.074 in) socket, push the fuel injector electrical connector out of the rocker arm carrier. 5 Note - there is no need to drain the fuel rail - if the engine coolant is found in the chambers,it may be necessary to install a new injector sleeve. Remove the bolt, fuel injector hold-down clamp and fuel injector.

May 04, 2010 | 2004 Ford F350

1 Answer

P1211, P1249, P1280 fault codes on a 7.3 L turbo diesel


p1211=ICP Not Controllable-regulates oil to Injectors
p1249=Wastegate Fail Steady State Rate
p1280=ICP Circuit Out Of Range
All but p1249 deal with your High Pressure oil system that controls your injectors

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1 Answer

04 f250 diesel cranks but won't start


this is an oil pressure problem, either a sensor is not sensing enough oil pressure, or the high pressure pump is not building enough pressure(possibly leaking or head is leaking). this engine requires 450 psi minimum oil pressure at the injectors to actuate the injectors.

Mar 22, 2009 | 2004 Ford F250

1 Answer

Running perfect parked for the evening would not start in the mor


this is jason and in the caption above you said its a diesel right well nin diesel fuel there is a lot of water start by checking where the fuel filter is there shjould be a valve that can release water like on diesel trucks the light will come on and say theres to much water in fuel or whatever maybe that might be the case the sensors just might be reading water rather than fuel.

Dec 14, 2008 | 2003 Ford Focus

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