I have a 2002 VW Cabrio that recently had to have its cylinder head redone and timing belt replaced.After the job was done the mechanic could not get the car to start and run.It only starts and stops right away.Won't stay running.HELP somebody cause he is stumped and I need my car back..Thanks...Paula M
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On some models, the Engine Control unit has a power supply relay. These relays some times get internal dry solder points. After driving for some time the the solder will get hot and separate. When it cools down it makes contact again. You will have to replace this relay or open it up and re- solder the solder joints. The relay is usually located on the main relay station in position 3. the relay station is located behind the right dash panel.[right hand drive vehicles]. You may need to refer to a manual for your specific model to find the exact location of the relay.
Your 94 should be a 350 engine,is it? That would be a timing chain,which means the distributor cap was removed to locate cylinder 1, Your high rpm in neutral,and low rpm in gear sounds like a vacume leak,The turn signal problem I'm not sure because you didn't say if the battery is going dead or if it starts right back up.
OK!... did you do a cylinder 'leak down test'?.. .if not, do it! If any 'unacceptable' leakage, have the head REDONE! NOW!.. you must BE SURE the valve timing is accurate!... Go to www.hmaservice.com and register( Vehicle by VIN). Afterward, you have access to shop manuals, service bulletins, wiring diagrams, etc. about your vehicle.
I hate to be the barer of bad news, if your timing belt broke, you will probably need to replace the heads also. Not a small job. When a timing belt brakes the timing is out (of course) and when that happens the valves hit the piston and bend. So remove the water pump belt, a/c belt and the alt. belt. you will have to remove the harmonic balancer through the right wheel well. Before you remove this make sure number one piston is at the top of the cylinder. Then unbolt the black plastic timing belt cover, clean all the debris out. When this is done check the all the pulleys in there to see if they are nylon or metal, if they are nylon replace everything (nylon cracks over time from stress). Once that is done you will have to remove the heads to check for valve damage. If damaged you will have to get new or used heads or have yours rebuilt.
There is no recall on the cylinder heads of a Navigator,if it was then the repair would be free,so he must be refering to a technical service bulletin.
The problem with having head redone is if they resurface the head then the bolt holes in the front timing chain cover will not line up with the bolt holes in the head when you reinstall the cover. Ford has recently come out with oversized headgaskets for this purpose so it is do-able now but it would have to be done by a machine shop fimilar with this proceedure.We tried to have this done one time by a local machine shop here and it was a total disaster.Wound up replacing heads anyway. The problem with this type of repair though is that the dealer wouldn't be able to warranty the repair but if it saves you a couple thousand that probably wouldn't matter to you. But you would definately need to be aware of this.