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Sport Trac Engine Problems

22 messages,  Last post on Aug 08, 2009 at 7:26 AM

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#15 of 22 Re: sport trak shifter issue [yellowvette] by mickeymouse2 Jan 15, 2009 (7:07 am)
Replying to: yellowvette (Jan 14, 2009 3:08 pm) Obviousely its a fuel issue of some kind. Your inertia switch or fuel switch will pop if the fuel pump is drawing too many amps. Thats a sign of a bad pump. Don't trust any t codes untile fuel pressure is checked. Autozone has a guage and the ford adapter you can borrow. Pressure must be at least 30-40 psi. Very unlikely it is your fuel filter. Some of the Ford 4.0L run at 60psi and no spec is listed, those that do come from the factory that way but will run fine at 35-60psi. Just incase you have the odd ball. A low voltage to the inertia switch may cause this also. Unplug the switch and verify 12volts. If you have low voltage reading while it is plugged in, a problem with the pump will cause that reading. If your worried about the diagnosis cut the green wire at the switch key on verify 12v. A shorted pump will fool the multimeter reading. This symtom is always the pump though. Replies to this message: yellowvette (Jan 15, 2009 10:30 pm)
#16 of 22 Re: sport trak shifter issue [mickeymouse2] by yellowvette Jan 15, 2009 (10:30 pm)
Replying to: mickeymouse2 (Jan 15, 2009 7:07 am) Thanks for the info, will check it out.
#17 of 22 engine dieseling at times, then dies!!!!!!!! by lictao Jan 19, 2009 (6:45 am)
i have a 02 sport trac that especially in the am and often times while driving the engine diesels the rpm's drop and eventually after a few minutes the engine dies. the trouble codes points to the o2 sensors which i have replaced all of them!! to no avail....... any thoughts? Replies to this message: mickeymouse2 (Jan 19, 2009 2:07 pm)
#18 of 22 Re: engine dieseling at times, then dies!!!!!!!! [lictao] by mickeymouse2 Jan 19, 2009 (2:07 pm)
Replying to: lictao (Jan 19, 2009 6:45 am) O2 sensor codes may be false and probably are. However it does explain a clue as to what might be wrong. The computer is getting bad information from the O2 sensors so it doesn't trust the info and runs the engine in default. Bad o2 sensors will not cause your vehicle to die. Most likely cause is a drop in fuel pressure, or a malfunctioning EGR valve. Both would cause a lean condition that the PCM would interpret as faulty O2 information. The easiest to check is the fuel pressure. Hook up the gauge and see if the pressure drops below 35psi when the problem symptom repeats itself. You can also do a mechanics trick to check the EGR. When the vehicle is running ok, disconect the vaccum hose to the EGR valve and plug it whith a golf tee. this will set a code, but its part of the test. If the problem goes away, the EGR is sticking open or the vaccum controls to it are malfunctioning.
#19 of 22 Re: fan switch problems 01 ford sport trac [RMass] by rearwheeldrive Feb 04, 2009 (11:11 pm)
Replying to: RMass (Dec 22, 2008 11:40 am) Engine overheat.   Your white smoke was probably steam that the engine was making when the gasket for the cylinder head gave way when it was too hot. My little four cylinder did this once I kept pouring water in it, but it was burning it up so fast, I had to pull over before I maxxed out the temp gauge and damaged the engine more. If you did pull over it might just be a new gasket and no major machine work needed.    Id talk to a local engine rebuilder or NAPA parts store for any recommended machine shop that could check the head for warpage.They can do it in front of you for no charge when you get the cylinder head off.
#20 of 22 engine change by skyfest2001 May 23, 2009 (7:50 pm)
I have a 2001 sport trac bad engine production date 03-00 with vin e 4x4 found a 2003 engine 4x4 with vin e production 07-24-00 would like to no if they will interchange thanks please help
#21 of 22 fuel filter by jzurc Jul 19, 2009 (9:58 am)
2002 Sport Trac fuel filter; do I need to depressurize the fuel system in order to disconnect fuel lines?
#22 of 22 2004 ST by billf2310 Aug 08, 2009 (7:26 am)
I have a 2004 ST the harmonic balance pulley separated after 65,000 miles. I had the pulley replaced and now the check engine light has started coming on. It came on the day I had the pulley replaced on acceleration. It went out and has not come on again for 2 weeks. While driving at 70 mph the engine loses power and the check engine light comes on. The rpm's stay up, the gauge's all remain in the normal range. The engine loses power and will not accelerate, then suddenly it will regain power and again accelerate. I am not sure what is going on unless it is a crank position sensor possibly going bad.

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