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not much activity---POP QUIZ!

blacksnapon

blacksnapon

Moderator
Staff member
9,461
301
waynesville,mo.
2000 ranger with the 4.0 sohc has check engine light showing lean condition on the pass side. Tech A says egr valve is stuck closed, Tech B says the timing chain is a tooth off on one side. Who's right? Tech A, Tech B, Neither, Both.
 
Mr. Stroker

Mr. Stroker

CASE IH
3,121
67
Michigan
I hated those TEC a TEC b questions on the NAFTA test..... I say they are both on crack! lol jk idk...
 
andym

andym

Real men are fanatics
604
33
Roseville, CA
I pick neither. A stuck *closed* EGR valve wouldn't cause a lean condition. If it was stuck open and not allowed exhaust gas through, then it would cause a lean condition.

As for the timing chain being off a tooth on one side, I never heard that one before. Maybe you should check the blinker fluid and muffler bearings too. ;)

Even if it *were* possible, it wouldn't cause a lean condition.

Sounds like you need some new techs! :)
 
6L PWR

6L PWR

Kansas Chapter member
7,961
255
Osage Beach, MO
blacksnapon said:
2000 ranger with the 4.0 sohc has check engine light showing lean condition on the pass side. Tech A says egr valve is stuck closed, Tech B says the timing chain is a tooth off on one side. Who's right? Tech A, Tech B, Neither, Both.
Click to expand...
Well neither of course.


Waiting for my PM with the correct answer now. :)
 
john112deere

john112deere

caffeine junkie
Staff member
10,807
405
central Vermont
I say neither, too.

Bad sensor on that bank, maybe?
 
fatherdoug

fatherdoug

Tonto Papadapolous
18,892
650
90 Clicks East of Hell
I am a little late, but I just can't help myself. I would agree with JD112. If the Rangers still have an 02 sensor on each exhaust bank, then the one on the passenger's side might need replacement.
 

mtflat

Flatheads Forever
2,559
147
So much for research ~ o/b experience I should have trusted my instincts.
 
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