DIAGNOSTIC TROUBLE CODE (DTC) P1316 INDICATES THAT CODES ARE STORED IN THE IDM
Possible causes:
Injector(s) or circuit(s)
Open or shorted IDM enable circuit
Open/short in EF circuit
Open/short in FDCS circuit
IDM relay
IDM powering circuits
IDM
PCM
Check your Injector Driver Module wires, circuits 821 (Brown/Orange)
and 818 (Grey/White) between the PCM and IDM. On the IDM side, the
connector pin numbers are 17 for circuit 821, and pin 4 for circuit
818. You should check for high resistance in that circuit, short to
ground, or open circuits. If wiring checks out good, you may need to
replace your IDM. It's not uncommon for water intrusion into the
module, due to its mounting location. Also check the engine wiring
harness where it routes up over the driver side shock and/or driver
side valve cover. That code is either a key-on/engine-off or a
continuous memory code.
Also how do you know the valves aren't sticking? Have you tried running a gunk removal oil in it for a week or anything?
Benjamin
I would also check the injectors and the coil in this case then if it sometimes runs fine. Also I would check the crankshaft and camshaft sensor
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That P1316 is a multiple/random cylinder misfire detected--code. There is a possibility that you have one or more sticking intake valves, so the first thing I would do is add a full quart of Magic Marvel Mystery Oil to the crankcase AFTER performing a oil and filter change (only add 5.5 quarts of oil to allow for the one quart of Magic Marvel). Then drive the vehicle for about a week and change the oil again. This time add a quart of Rislone. Then drive it for the normal interval between oil changes. You are trying to remove the gummy deposits on the piston rings and valve guides by going through this procedure. As far as checking the coil pack, there is really no known procedure. They do fail and usually throw a misfire code but the misfire is usually consistent.The loss of coolant is a concern. Have the vehicle pressure tested through the cooling system expansion tank filler neck-- at 10 psi. Inspect the seam of the expansion tank for seepage. Inspect the cylinder head gaskets for seepage by peering under the exhaust manifolds from underneath the vehicle with a flashlight. Head gaskets are a typical failure item on Land Rovers that can lead to engine meltdown if not addressed.
--------------------------also another reason for The 1316 code is related to the crankshaft sensor. My guess is that one/some of the teeth on the reluctor ring are bent or just out of range causing crank sensor pattern to be out of range. If you have had a rear main seal or transmission work done before and then this problem started I would bet the teeth are bent.----------
now the other code is for ----------- as after 1177 comes the other codes mentiones may also occur in near by time----------
P1177 Maximum Negative FMFR Correction Fault
to resolve the code p1177 try this.
Adaptive mass fuel flow rate is to high,(running rich)It means that the adaptive values are at their limit and cannot rectify the problem.A good place to start is the misfire as this will be picked up by the lambda sensor as a rich mixture.
Check the plugs on the lamda sensor are clean and secure.
--------- the mass air flow meter is dirty or bad. check out if any mud/water into the intake system while wheeling, but just from everyday driving some dirt and grime can accumulate on the wires. The MAFS is what tells your computer how much air and what temp that air coming in is, then the computer adjusts the fuel mixture using that info. . Try buying some mass air flow sensor cleaner at any local auto parts shop. Take off your positive battery cable, undo the wires going to the sensor, undo the two clips after your airbox, and the hose clamp on the other end, and spray that out. Hopefully that is all it needs.
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keep updated.thanks.
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P1187 Oxygen Sensor Heater Circuit Short Upstream
P1179 Maximum Negative AMFR Correction Fault
P1177 Maximum Negative FMFR Correction Fault
I had EXACTLY the same codes about a year ago. truck would idle roughly and then the ses would light up..exact same.....drivers side injector harness was partially disconnected. If I were you I would pull the passenger side first and maybe you'll get lucky... but on the other hand pull them both and replace both harnesses.
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and 1st it used to do the same with me i change the fuel pump and the plugs and then it still the same. but what i did i change the elic cup and now it's runing fine and so power full !
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FJ9 DIAGNOSTIC TROUBLE CODE (DTC) P1316 INDICATES THAT CODES ARE STORED IN THE IDM
l Possible causes:
-- Injector(s) or circuit(s)
-- Open or shorted IDM enable circuit
-- Open/short in EF circuit
-- Open/short in FDCS circuit
-- IDM relay
-- IDM powering circuits
-- IDM
-- PCM
l Check for other codes.
l Key on, engine off.
l Perform KOEO On-Demand Self Test.
l Are IDM or any other codes stored?
Yes
GO to the appropriate pinpoint test.
No
GO to «FJ10».
Thanks
What is an elic cup?? When i search it, the only thing that comes up is your comment.
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what and where is the elic cup?
1997 Land Rover Discovery. Car has hard start I receive codes P1316, and P1177 sometimes sounds like a misfire while driving, even when it starts it will take a good 20 seconds or so before it is able to drive. was told to change the elic cup what at where is that?
I have already checked the things mentioned in the last comment and it isnt a coolant or pressure problem. Valves arent sticking either. I still dont understand what the elic cup is or where it is, was that a misspell or is that a real thing. misfire happens when car is under heavy load, going up hills or when AC is on. When starting car after not driving for a couple of days it is VERY hard to start having misfires and will not stay running.
I have run miracle oil in the vehicle before and have done all the checks suggested. I have taken the car for a test run for about 5 miles then a stop for 5 min then again for a 5 mile drive stop and then another 5 miles. The first part of the drive the rover ran smoothly the second part it was a little rough the last portion of the drive it was making the misfire sounds and was even harder to drive.
PLEASE HELP!!!!! This car is driving me crazy :(
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