The Check Engine light is on all the time and the following two symptoms
1. When its cold it takes a couple seconds of cranking longer to start than
when its warm
2. At wide open throttle it loses power and seems to stutter like its
running out of gas. Again only when its cold. If the car has been run for a
good 15 minutes or so it works fine at WOT.
I'm only assuming these are not normal since the Check Engine light is on.
My questions are: has anyone else expeirienced this? And, secondly: assuming
the ECU goes into closed loop at WOT does anyone know which sensors are or
are'nt being used at WOT?
No need to be rude now, I was just checking to see if someone else had the
same problem before I drop $50 on a code scan. I would have thought that 10
minutes of driving down the highway would be enough to warm the engine up,
but it still stutters till at least 15 minutes into the drive.
well... if you explained it as you just did, i wouldnt have been rude.
i pictured you backing out of the drive and nailing it.
yes certainly 10 minutes on the highway is enough... more than enough. if
you see the engine is slow to warm up on the gauge.. I'd question that
are you somewhere that parts stores dont offer free readout?
I'm sorta thinking ACT totally out or ECT off.. probably act cause ect
usually acts the opposite.
here's something... disconnect the MAF harness; if it runs better, bingo...if
it doesnt want to run at all, it's not the maf or act.
Thanks! I'll try disconnecting the MAF tonight. After reading about the ACT
it sure sounds like it could be the culprit.
There will be an AutoZone opening soon in my area, and I've heard they do
free scans. I'll have to check if Advance Auto or Checker Auto does them
though as they already have stores open here.
Well, I got the codes read at Advance Auto. They came up with PO171 System
Too Lean Bank 1 and PO174 System Too Lean Bank 2
When I disconnect the MAF the car is even more prone to stuttering or even
dying completely when I give it any amount of gas.
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