98 Ford Taurus 3.0 DOHC, CHECK ENGINE LIGHT

Old Soldier · 07-03-2008, 05:37 PM

Hello.
I'm new to this forum, but, obviously, I'm NOT the only one with problems with a Taurus.
My problems started about four months ago, with the Check Engine Light coming on. I had the codes chacked, and got PO174, and (I think) PO 175. In any case, if pointed to BOTH O2 sensors being bad. Also, BOTH banks were running Lean.
I checked and REPLACED all vacuum hoses, and sprayed injector cleaner on ALL vacuum connections to check for leaks. Didn't find any.
I have CLEANED the MAF, problem went away for about 2 days.
I replaced the EGR Valve. SOME improvement, DIDN'T LAST!
Then, I replaced the IAC Valve. It was gunked up, and the voltage test suggested by FORD said it needed replacing. No CHANGE.
I replaced the FUEL FILTER. NO DIFFERENCE!
TODAY, I drove about 50 miles up the Interstate at speed, to an appointment. After it was over, I drove BACK.
I noticed that if I accelerated while at speed, (70 MPH), the engine would 'bogg', as if it were out of gas. (nearly FULL tank).
If I released the accelerator, then SLOWLY eased it back down, the engine would slowly pick up the power and return to speed.
If I pressed hard on the pedal, NOTHING. It seemed to 'back up'.

The car has 151100 miles on it, and it has been in my family since new. I am at my wits end with this car, and I think the next step is the 'Gallon of Gas, and a Match' remedy.
Any help will be REALLY appreciated.

jmolter · 07-09-2008, 12:55 AM

dito my ford 92 ranger same thing loses power after heats or warms up try turning off ignition(motor) in neutral then start back up if you get power back thats where i am changed everything you mentioned. I like the match and gas

fix any suggestions are appreciated