TDI Ranger
Member
- Joined
- Apr 19, 2020
- Messages
- 70
- Reaction score
- 87
- Points
- 18
- Location
- Birmingham,AL
- Vehicle Year
- 2003
- Make / Model
- Ford Ranger
- Engine Type
- 4.0 V6
- Transmission
- Manual
- 2WD / 4WD
- 4WD
I need some help. Back in July I purchased a 2011 Ranger Sport with the 4.0 SOHC, The truck had a blown head gasket. I briefly heard the truck run it started up but ran with a miss. There were codes for cylinder misfire on #5+6.
I pulled the engine and sent the heads to a machine shop to be reworked. I purchased the OTC tool kit and valve spring compressor to set the chain timing. The engine was reassembled using the 2003 Ford service manual I have.
After the engine was put back in the truck it would not start, no codes, no PATS issues. I preformed a preliminary diagnosis and found there was no spark. There is a fuel injector pulse with a noid light but no spark. Referencing the 2003 service manual, for the diagnosis the CKP, PCM, and coil are the major components in the ignition system. The CKP is good, wiring good, coil is good, and proper voltage and grounds are good. I came to the conclusion the PCM had lost it's ability to close the ground on the coil. I replaced the PCM replaced with a used one and had it reflashed and PATS unlocked. No spark... I had 2 other really good technicians I know go over the truck. They came to the same conclusion. Bad PCM.
I gave up and took it to a Ford dealer with 3 master techs and informed them of everything that was done and told them to fix it. They diagnosed it with a bad PCM. I told them I wasn't convinced that was the problem but told them to go ahead. After several weeks I found out new PCMs are on back order until next year. I bought a remanufactured PCM from O'Reilly and they installed it. No Start....
I am being told the engine is out of time and it will be 23 hours labor to fix it. I am not beyond a mistake. I'm not perfect, but it was set per the 2003 manual with OTC tools.
Here is my question. Has something changed on the 2011 where the CMP is being used to control the ignition? On a lot of engines the CKP is the primary timing source and the CMP is a reference. The engine will run like crap with a failed CMP, but it will run. It will not run with a CKP failure. Using only the CKP, If the cams were out of time and somehow I didn't bend valves, wouldn't this be the same? If it was out of time it should still spark right? Just at the wrong time?
Help. I'm going to pick up the truck from the Ford dealer Monday. The first thing I'm going to check is the cam timing again. I'm really not expecting anything to be wrong, but.... I'm really at a loss. Does anyone have any information on the 2011 ignition system?
Thanks for the help
I pulled the engine and sent the heads to a machine shop to be reworked. I purchased the OTC tool kit and valve spring compressor to set the chain timing. The engine was reassembled using the 2003 Ford service manual I have.
After the engine was put back in the truck it would not start, no codes, no PATS issues. I preformed a preliminary diagnosis and found there was no spark. There is a fuel injector pulse with a noid light but no spark. Referencing the 2003 service manual, for the diagnosis the CKP, PCM, and coil are the major components in the ignition system. The CKP is good, wiring good, coil is good, and proper voltage and grounds are good. I came to the conclusion the PCM had lost it's ability to close the ground on the coil. I replaced the PCM replaced with a used one and had it reflashed and PATS unlocked. No spark... I had 2 other really good technicians I know go over the truck. They came to the same conclusion. Bad PCM.
I gave up and took it to a Ford dealer with 3 master techs and informed them of everything that was done and told them to fix it. They diagnosed it with a bad PCM. I told them I wasn't convinced that was the problem but told them to go ahead. After several weeks I found out new PCMs are on back order until next year. I bought a remanufactured PCM from O'Reilly and they installed it. No Start....
I am being told the engine is out of time and it will be 23 hours labor to fix it. I am not beyond a mistake. I'm not perfect, but it was set per the 2003 manual with OTC tools.
Here is my question. Has something changed on the 2011 where the CMP is being used to control the ignition? On a lot of engines the CKP is the primary timing source and the CMP is a reference. The engine will run like crap with a failed CMP, but it will run. It will not run with a CKP failure. Using only the CKP, If the cams were out of time and somehow I didn't bend valves, wouldn't this be the same? If it was out of time it should still spark right? Just at the wrong time?
Help. I'm going to pick up the truck from the Ford dealer Monday. The first thing I'm going to check is the cam timing again. I'm really not expecting anything to be wrong, but.... I'm really at a loss. Does anyone have any information on the 2011 ignition system?
Thanks for the help
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