ATTENTION: All Postings that advertise items for sale will be deleted from the Discussion Forum. You may post sale items for free in the Classifieds section. Sign up now.
While driving 55/65 mph for no apparent reason (on level ground)after it has been running fine for 15 min. It will completely (just like the key was shut off mommentarely) it looses power then it will backfire. It doesnt always regain fullpower, sometimes I pull completely over to the side of the road, the engine stays running and then it gets better and runs ok again until 10/15 min go by. But I found if I take it real easy it seems to run ok. I just purchased this Rv and so it was just smogged and the previous owner didn't use it much at all.
I have heard that it could possibly be the MODULE, bad fuel(it has set for along time)it had a 1/4 tank when I bought it, its Know full is there anything I could check Maybe timing retarded/advanced to pass smog?
Check the ingnition module. It is located on the passanger side, usually mounted to a bracket. It is black and about 6x4 or so. I have a 1988 460 and I had to replace it 2x. Upon driving the engine just quits on you at about 60mph. There could also be white smoke. It will start right up again usually right away or after a minute. Usually happens after heat up.
Check and change all the fuel filters as a first move...with no use and long set, they may have hardened or clogged
While driving 55/65 mph for no apparent reason (on level ground)after it has been running fine for 15 min. It will completely (just like the key was shut off mommentarely) it looses power then it will backfire. It doesnt always regain fullpower, sometimes I pull completely over to the side of the road, the engine stays running and then it gets better and runs ok again until 10/15 min go by. But I found if I take it real easy it seems to run ok. I just purchased this Rv and so it was just smogged and the previous owner didn't use it much at all.
I have heard that it could possibly be the MODULE, bad fuel(it has set for along time)it had a 1/4 tank when I bought it, its Know full is there anything I could check Maybe timing retarded/advanced to pass smog?
In response to your 460 engine, I might offer you the following suggestions. Check the crimped fitting inside the rubber fitting that allows the stator wires inside to the magnetic engine pickup. I have seen the crimped fittings completely become disconnected while enclosed in this rubber grommet fitting. This will cause your problem of running for 15 minutes and then the backfire, once the connection cool, the wires join back together and then it runs for another 15 minutes or so until the pickup wires disconnect and then its backfire again. Sometimes the crimped wires get hot while inside the rubber grommet and show no evidence of separation but they do and open the connection either to the magnetic pickup or the side to ground. If that does not correct the problem, check the coil connections around the crimped connectors in the coil harnness and delete the coil harness altogether by using stacon connectors to the positive and negative connectors on the coil, If this fails try checking the wiring harness behind the key switch assembly for hardness as the insulation on the key ignition wires will crack and separate with age., If this fails you might try replacing the key switch assembly, I've seen these go bad as well.
Just as a sidenote, I've rebuilt 4 F460 engines and 3 C-6 transmissions in my diamond conversion motor home. Each engine lasted 200 thousand plus+ and each C-6 overhaul went 130 thousand plus. If you need any other information its NaFilm1@aol.com
Sorry, I guess I failed to identify the location of the crimped connectors in the precending reply. They are located at the conncection between the ford plastic connector and the inside of the distributor. The rubber grommet fits in a groove located on the distributor underneath the rotor cap and on the side of the distributor. There are at least two wires in this grommet, one goes to the stator magnetic pickup and the other to ground.
email Bill
reply to message
post new message
search forums
