Hank wrote:>> My wife's 1997 Ford Escort, 2.0L hesitates (almost wants to stall)>> when coming to a stop. Other than that the car is OK. About 80,000>> miles on it.>> Any ideas would be helpful.>>

Likely culprits are sticking open EGR valve, dirty MAF sensor elements,>or a sticking/failing IAC motor. All three of these items can be>cleaned or checked for some easy, no-cost diagnosis. The MAF sensor>can be cleaned with almost 100% success rate (won't harm it and can>only make it work the same or better). The IAC can be cleaned along>with the throttle blade with any throttle body cleaner that is designed>to be safe for coated throttle bodies. You could disable your EGR>valve by removing its vacuum hose and see if the problem goes away.>This can/will set an EGR code in the computer, so disconnect the>battery negative terminal for 10 minutes after finishing the test to>clear ECM memory. Infact, if you do ANY of the above tests/cleaning,>go ahead and disconnect the battery when done to reset the ECM learned>values. That way the ECM will start out with a "clean slate" and>adjust to the clean MAF and/or induction passages that you have>created.>

Don Bruder replied:>>Carb or Fuel-injected? If carb, MAYBE>>float shifting so that it sticks>>closed when braking, resulting in the>>engine starving. (Just encountered>>a variation on this theme myself not>>too long ago, and boy was it a bear>>to track down...)>

I hope it's fuel injected! I mean, 1997 and all, OBDII, etc.>Unless its a RWD converted Pro Street project or some such...>

Toyota MDT in MO

In article <73ir41lbb0gcat0ekk­7to1rgnu0dbu1ir3@4ax­.com>,> Hank <hakone@ptd.net> wrote:>

Leaky brake booster diaphragm? So that when the brake is stepped on, >there's effectively a giant vaccuum leak that leans things out so bad >the car wants to die.>

Automatic tranny in it? If so, maybe torque converter not freewheeling >properly on decelleration.>

Stick? Maybe clutch not releasing properly.>

Hard to tell from such a ... "concise" ... problem report. We need some >more details. >

Details like:>Does "coming to a stop" mean "as the car ceases to move", "all during >the braking process", or "When the brake is first stepped on to stop"?>

Is it a stick or an auto?>

Power brakes or no?>

Sometimes? Every time? Once at the first stop of the day, then not again >until the next day? Once at the last stop before pulling into the >driveway at the end of a long commute, then not again until tomorrow >night? Other?>

When braking from what speed(s)?>

Carb or Fuel-injected? If carb, MAYBE float shifting so that it sticks >closed when braking, resulting in the engine starving. (Just encountered >a variation on this theme myself not too long ago, and boy was it a bear >to track down...) >

Can you reproduce the "wants to stall" by playing with the brakes while >sitting still, or does the car have to be in motion to exhibit the >symptom?>

RPM range where it happens? Between X and Y RPM? At X RPM? Below X RPM?>

Give us more to work with, and I'm sure there will be folks who will at >least take a stab at it.

Thanks Hank…>