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Stock JK TechBulletin board forum regarding issues with OE (original equipment) components of the Jeep JK Wrangler (Rubicon, Sahara, Unlimited and X) such as factory suspension parts, engine, transmission, body parts, interior fixtures and the on-board computer.
If my 2011 jk turns over only when using starting fluid (and dies shortly after), what could I eliminate as a problem (C-position sensor, F-pump relay, Grounding wires, etc)? Would the problem definitely be the F-pump?
Suggest first checking the relevant fuses with a meter. Is the check engine lamp on? Even if the lamp isn't on there may be "pending codes" that can be read with a good scanner. Sounds like you have proven it's a fuel delivery problem, but one would have to verify the electric pump has power with low fuel pressure (or it blows the fuse) to condemn it.
Thanks Mr.T!
I did check all of the fuses with a MM. I don't have any lights on the dash indicating I have a problem.
I put my ear to the open gas cap, but I didn't hear anything when my with turn the key to "On"...but I didn't know what I might hear if it did energize.
I need to verify the pump is getting power (how), and if not, chase down the wire and look for problems there?
How many components/sub-components are in the fuel delivery system?...I'd rather isolate everything and then replace the FP. Thanks again for the response!
The pump is in the tank, so the wires are probably accessible nearby. The wire insulation can be pierced with a straight-pin or needle, and the meter connected that way to check for power. The fuel line could be disconnected, it should have pressure even without power if the pump was working properly the last time it was energized.
F#!@-ing plastic piece snapped off! See pics please help asap
This line comes down with the gas filler tube...connects on top of fuel tank...it snapped off. I don't know what it is. See pics and please help asap! Must fix tonight if parts are on hand at local auto parts store a. Where snapped from line running along fuel fill hose. Where snapped on tank Top of tank
That part is almost certainly going to take a dealer parts department or a wrecking yard to find. If I'm reading the pic correctly, it's a filler vent and it broke where the quick-connect attaches. The dealer will have a parts diagram, should be easy to identify what parts are available separately and as an assembly. I'd search the on-line dealers for a parts diagram and prices tonight...
F#!@-ing plastic piece snapped off! See pics please help asap
Mr. T,
Replaced the fuel pump....apparently not the issue. So what I know is, fuel pump replaced and still only starts with a shot of engine starting fluid. Man I'm frustrated....
Is the pump is running, and is there pressure? Hate to say this, but it may take a high-end scan tool, the special tools to test fuel pressure, and the factory service manual to troubleshoot it. Might help to know if any symptoms preceded the crank no start.
I looked briefly in the manual, here's the first part of "crank no start".
ENGINE CRANKS BUT DOES NOT START
Possible Causes
NO START PRE-TEST
POWERTRAIN FUSES OPEN
SECONDARY INDICATORS PRESENT
ENGINE MECHANICAL
(A209) FUSED B+ CIRCUIT OPEN OR SHORTED TO GROUND
(F342) FUSED ASD RELAY OUTPUT CIRCUIT OPEN
FUEL CONTAMINATION
Diagnostic Test
1. NO START PRE-TEST
NOTE: The following list of items must be checked before continuing with any no start tests.
The battery must be fully charged and in good condition. A low charged battery may produce invalid test
results. If the battery is low, charge the battery and then attempt to start the vehicle by cranking the
engine for 15 seconds, 3 consecutive times. This will allow any DTCs to set that may have been erased due to a dead battery.
Try to communicate with PCM if not able to communicate check fuses.
Make sure the Powers and Ground to the PCM are OK.
Make sure the PCM communicates with the scan tool and that there are no DTCs stored in the PCM memory. If the PCM reports a No Response condition, refer to section 8 Electrical Electronic Control Module Electrical Diagnostics for the proper tests.
Read the PCM DTCs with the scan tool . If any DTCs are present, they must be repaired before continuing with any other No Start diagnostic tests. Refer to the Table of Contents for the related P-code that is reported by the PCM.
Make sure that the Bus is functional. Attempt to communicate with the Instrument Cluster and VTSS, If you are unable to establish communications refer to 8 Electrical Electronic Control Module Electrical Diagnostics for the proper Diagnostic procedures.
The Sentry Key Immobilizer System must be operating properly. Check for proper communication with the scan tool and check for DTCs that may be stored in the Sentry Key Immobilizer Module (SKREEM). Repair the DTC(s) before continuing.
If no DTCs are found, using the scan tool, select Clear PCM (BATT Disconnect).
Crank the engine several times. Using the scan tool, View DTCs. If a DTC is present perform the DTC diagnostics before continuing.
Will crank, won't turnover without starting fluid
