I need help ~PLEASE HELP~

[xDangerRangerx]

hello to all, i have a 1994 ford ranger xlt with the 4.0 v6. i rencently did a full tune-up and my truck is throwing codes. i keep getting these codes.....

#172
Heated Exhaust Gas Oxygen (HEGO) bank #1 "LEAN"

#176
Heated Exhaust Gas Oxygen (HEGO) bank #2 "LEAN"

Can anyone help? i replace the o2 sensors and everything. it spits and sputters and it sounds like its got a huge cam in it when it idles lol. ALSO I AM GETTING 11.6 MPG!!! yes i did say 11.6. any help would be much appreciated!!!

 

[sholzy]

Did you clean the MAF? And always reset the computer when cleaning or replacing sensors.

 

[xDangerRangerx]

i just installed a new MAF around a month ago. my truck had been doing the same thing its doing now but when i replace the MAF the first time, my truck ran fine. now it runs like S**T

 

[sholzy]

Did you reset the EEC? The EEC still has the values from the old MAF stored in the EEC. Reset the EEC and drive it 15-20 miles then pull the new codes and post them here.

 

[trail B2]

Double check to make sure you have the spark plugs wires on right.Even if you know there right double check and look in the book assume nothing.

 

[xDangerRangerx]

Did you reset the EEC? The EEC still has the values from the old MAF stored in the EEC. Reset the EEC and drive it 15-20 miles then pull the new codes and post them here.

EEC you mean the computer right?? if so i have already done that. same codes.

 

[sholzy]

EEC you mean the computer right?? if so i have already done that. same codes.

Yes.

Now check for vacuum leaks.

 

[xDangerRangerx]

Yes.

Now check for vacuum leaks.

how do i do that? just fallow each line??

 

[sholzy]

how do i do that? just fallow each line??

With engine running, follow each hose checking for cracks or splits, rotten areas, especially ends of hoses. Brake booster hose, PCV hose are 2 that are bad about leaking. Spray carb cleaner around gaskets of the intakes, even on hoses. Where there is a leak, the rpm will change.

 

[xDangerRangerx]

well now i got another problem.... i cant find ANY diagrams of the vacuum layout for my truck. i did notice that their is a resivouir right by the main vacuum box. it is all rusted and in really bad shape. could this possible be it? i went around to some vacuum lines and sprayed wd-40 and nothing. i watched for bubbling and everything. any thoughts??

 

[sholzy]

well now i got another problem.... i cant find ANY diagrams of the vacuum layout for my truck. i did notice that their is a resivouir right by the main vacuum box. it is all rusted and in really bad shape. could this possible be it? i went around to some vacuum lines and sprayed wd-40 and nothing. i watched for bubbling and everything. any thoughts??

http://www.therangerstation.com/tech_library/diagrams/95-99_Ranger_4-0_vacuum_hose_diagram.gif

 

[xDangerRangerx]

hmm. i havent found anything major. i did find a few slightly dryrotted endinds but nothing to series. any more thoughts anyone? i also have a fairly good exhaust leak roight after the o2 sencers. could that be giving the sencors a bad feed????