Question about 1991 Ford Explorer

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I have a 1991 ford explorer 4.0L Eddie Bauer edition. The idle revs to 2000 rpm's and then will drop to no less then 1200 rpm's. If I give it the gas it dies whether I'm in gear or not but when I disconnect the TPS( throttle position sensor it will still rev high but at least I can put it in gear and hit the throttle and it won't die. I've replaced the ICV, the TPS, sprayed out the MAF and the throttle body. Checked for vacuum leaks, replaced the fuel filter, checked the fuel pressure and the fuel pump all of which seems good. Any ideas?

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There are several problems and they are all related. Check plugs if they a white with gray ash buildup. Gap .054

1. Fuel pressure regulator, if it is ruptured fuel will be vacuumed straight into the the intake causing idle surge also in causes temperature fluctuation and poor performance. It will also cause lean running condition.
2. The Mass Airflow Sensor also has a huge impact on mixture, defective symptom was a knocking and clattering under load especially uphill. Cleaning will only give temporary fix.
3. Spark Plugs- Do not use Platinum plugs they run hotter than standard plugs!
4. Any intermittent starting problems are likely fuel pump related, when you turn the key in the ignition you should hear the pump running!!
5. Preventive maintenance is the key change your fuel filter at recommended intervals.

I have a 94 Explorer, it run very poorly after changing these items it runs great, restored power, idles great and great mileage again and finally no more temperature fluctuation.

Posted on Feb 22, 2011

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My 97 Ford Explorer Eddie Bauer Edition V8 engine is shaking, running rough and low idling. What could be the problem?


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2007 FORD EXPLORER HAS LOW IDLE RPM. RUNS A LITTLE ROUGH AT IDLE ONLY


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Fuel filter installation


Hello there:
assuming that thisiswhat youare loking for here Ford Explorer Fuel Filter - Hastings Product Description: HASTINGS FUEL FILTER -- OEM Direct Fit Replacement In-Line Fuel Filter, 3 1/8 O.D., 5/16 Inlet, 5/16 Outlet, 6 25/32Length, Replaces Ford F0TZ-9155-B; Baldwin BF1166,
  • 1991-1998: Eddie Bauer; 6Cyl 4.0L GAS, FI, VIN "X";
  • 1991-1998: Sport; 6Cyl 4.0L GAS, FI, VIN "X";
  • 1991-1998: XL; 6Cyl 4.0L GAS, FI, VIN "X";
  • 1991-1998: XLT; 6Cyl 4.0L GAS, FI, VIN "X";
  • 1993-1998: Limited; 6Cyl 4.0L GAS, FI, VIN "X";
ahg8018.jpg Ford Explorer Fuel Filter - Fram Product Description: FRAM IN-LINE GASOLINE FUEL FILTER -- 7.16" Height, 5/16 (Tube) I.D., 2.13" O.D., Features High Technology Filtration, Designed To Provide Optimum Balance Between Low Restriction And Required Efficiency, Comes With....
  • 1999-1999: XL; 6Cyl 4.0L GAS, FI, VIN "E";
  • 1999-1999: XL; 6Cyl 4.0L GAS, FI, VIN "X";
  • 1999-2000: Eddie Bauer; 6Cyl 4.0L GAS, FI, VIN "X";
  • 1999-2000: Sport; 6Cyl 4.0L GAS, FI, VIN "X";
  • 1999-2000: XLS; 6Cyl 4.0L GAS, FI, VIN "X";
are several filters that willfit your vehical

Nov 22, 2009 | 1996 Ford Explorer

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