2008 E150 4.6L 2V - Shutting off, restart, then shutting off while driving
My service vehicle [24 hour mobile truck repair since 1981 in middle ga and metro atlanta] since new. 2008 ford e150 4.6l 2v v8 with 247k miles. Runs and drives great but will shut down intermittenly. Outside temp no effect. Have replaced mass air flow sensor, pcm, throttle body, main engine wiring harness. All with new oe parts. Has recently had new plugs and coil packs replaced. Dealer had it from april to november this year until I got fed up and picked it up myself. Oil, filter and lubed every 4k miles. Beginning to suspect fuel pump strainers may be clogged and sometimes collapsing and shutting off fuel flow. Have jpro professional and giotto/autoenginuity diagnostic programs. Could someone give me a direction?
I know this will sound crazy but load test that battery and check the connections if you haven not done so. I chased my tail on a 09 F150 for throttle codes & P060A and U0300 start stall / intermittent stall. New battery fixed it all after me scoping all kinds of things wasting over 3 hours.
I agree, check power and ground. I would say the PCM errors may be setting due to low voltage. Any aftermarket items attached like a high-speed idle?
Still driving me crazy. Installed new fuel pump and fuel filter. Fuel pressure now steady, but now getting P0303 on cylinder 3. Swapped coils between 3 and 4 and still got P0303. Going to check the spark plug tomorrow.
Load tested battery [Fairly New Battery] 12.2V the under load test , dropped to 11.6V. Dealers supposedly checked and cleaned all grounds. ??
Excellent, just trying to help make sure we did not over look something silly.
When it does stall, what is going away; fuel supply, or spark?
Going to hook up computer and drive til shuts down, then start recording then start driving again so it can see something. I Hope
i Agree with Albin. Scope your fuel and ignition even though it wont shut off when you want it too you just might see something happen before it happens.
The one that I had when I caught it in the act was loosing both fuel and spark, so close that I could not tell who left the party first. So I went to cam and crank and it was interesting that they both slowed down same rate. Back probed powers and grounds at the pcm and did not see anything. The U0300 would only set after a P060A, I mean that If P060A set I may get a u0300 , however never a…
The P1000 says PCM software incompatability. Supposedly the Ford Dealer Tech [at 2nd Dealer] was supposed to completely erase the PCM and start from scratch reprogramming it. The last time it shut down I also got a PATS code that supposedly shut it down.
The u0300 says that, instance that I had had 2 computers installed and programmed, 1 themselves and 1 via dealer. Same codes set. Like others said see what is missing as the event occurs. Maybe check for excessive AC from alternator ?
P1000 for Ford is On-Board Diagnostic (OBD) Systems Readiness Test Not Complete. Battery or powertrain control module (PCM) had recently been disconnected or PCM DTCs have recently been cleared with a scan tool.
I assumed that Mr Holden meant u0300 code and got the #s mixed with the definition.
- Rrect. Eyes must have crossed. U0300 code keeps popping up along with the p2105 and occasionly p060a when unit shuts down. I really appreciate* all the help and directions offered. This thing has driven me crazy. - will try various suggestions and see what happens. Gave up on cars when they went away from the points and condensor.
P1000 is monitors have not completed. You get a P1000 when battery is disconnected. You stated when you load tested the battery static voltage was only 12.2. I think as others have said you have a battery issue. PCM is rebooting due to low voltage. Why not just put a new battery in it and see if it fixes the problem.
PATS codes should never shut down an engine, only prevent it from starting.
I have seen coils zap the PCM and cause intermittent shut down. P2105 tell me the pcm is shutting it down for some reason. Maybe can line is causing the UO121. Interesting
Hi, At the risk of being redundant, I would strongly recommend that you very closely check any and every contact point along the power supply current path from source to PCM, to include the underside of the fuse panel. Also, load testing these circuit's ability to carry current while being jiggled. Finally, take nothing for granted, especially someone else's diagnostic steps. Hope this helps. Joe
I remember using a factory service manual for a pre OBD 78 or 79 Ford p/u and one their diagnostic procedures was the wiggle test.Wait and hear me out before you start laughing.I recently had a 2010 Expedition and it had similar symtoms as what we are seeing here.Well sometimes you have to use old school procedures to solve modern issues.Well I have a…