Ford Explorer Anti-theft problem

[samrod]

Would an exhaust leak at the exhaust manifold to cylinder head conjucntion cause an excessive loss of power upon acceleration?

[scotty]

No, an exhaust leak would not cause a bad loss of power. It will cause of course a noise and can effect the reading of the oxygen sensor on that side. That can effect fuel delivery, but would not cause an extreme loss of power.

[samrod]

No, an exhaust leak would not cause a bad loss of power. It will cause of course a noise and can effect the reading of the oxygen sensor on that side. That can effect fuel delivery, but would not cause an extreme loss of power.

Thanks Scotty, I think I found the source, open vaccum port on intake manifold, however, still misfiring.

[scotty]

A vacuum leak would not cause a loss of power. That will just give you a rough or high idle.
If the engine is misfiring, check the basics.
A bad spark plug.
Plug wire.
Ignition coil.
Cap and rotor (depending on year).
Low fuel pressure.

[Hvincent]

Recently my truck's been running unusually loud when driving, most noticable when coasting after taking my foot off the pedal and on the highway. It idles normally and seems like it shifts fine (auto). There is also a slight vibration in the gas pedal I didn't notice before, but could be unrelated. There's only 60K miles on it, the check engine light is pulling an EVAP code, but other than that my mechanic say everything appears to be fine when he checked it out. Just had an oil change, fluids are fine, new air filter. Should I have the spark plugs changed or a tune up, could it be something else? I can't spend too much $$ on this problem but I know something's wrong. What else should I have checked out? Thanks.

[ProTech]

Could be something like an exhaust leak, or related exhaust problem. Those are most noticeable when letting off gas usually, such as a bad baffle in a muffler, or a catalytic converter coming apart internally.

Possibly other drivetrain related problems such as a transmission noise, hub bearing, bad tire, etc. Quite a lot of possibilities. I'd recommend having your mechanic drive it with you so you can point out the noise as it happens. He might be able to pinpoint a bit better that way.

[DarthNeo]

1999 lincoln navigator having problems starting in cold weather

[carriedi]

what kind of problem are you having in your starting? Just get one click when you turn the key to start? (bad starter relay) (bad starter solenoid) Get a series of clicks? (low battery) Starter cranks over but doesn't start? (Check for spark, fuel pressure and injector pulse) Cranks over but takes a while before it will start? (check if your area uses oxygenated fuel in the winter time)

possibly: there is a TSB for Ford and Lincoln vehicles. tsb#98-26-2
includes 98,99 lincoln navigator

http://www.performanceprobe.com/index2. ... e=98-26-02

[Allen]

My 2005 Explorer Sport Trac will not start. It appears to be locked out on a continually cycling anti-theft module. No interior lights, constant relay chatter. I had to disconnect the horn to maintain my sanity. Neither key fob made a difference. Disconnected the battery, but that didn't reset it. Did replace the battery but the problem didn't surface for a week. Did notice the needles on the gauges were pulsating below the printed ranges. Any ideas as what to check before I tow the problem to the dealer?

[carriedi]

have you tried to open the door with the key and then turning on the ignition? (bypasses the key fob to turn off the alarm)