Wife's Bronco Stalling

[broncolovernewmexico]

:-B Man-o-man am I confused.....My wife's 88 bronco XLT, 302,5.0,V8,EFI stalls when she has to turn a corner or even when she has to stop at a stop light-sign.

Only when she has to let go of the accelarator not while driving. But, there is also a delay when she hits the gas pedal to accelerate after being stopped.

I have already pulled the codes in two different steps with my EEC IV.

EOIO : codes 54 & 32

32= EGR pressuer feedback

54=Intake air charge temp. sendor circut open:vane air flow sensor out of range

EO : Codes all r codes 21 , 44 , 77 , 52

21=cooling temp. out of range or ECT out of range

44= Thermactor air system fault

77= Operator error during Dynamic Response Test/Wide Open Trottle not sensed

52= Power Steering pressure switch open.

These are the codes. Now, the problem started about 3-4 months ago. I went ahead and changed the plugs, wires, Dist. Cap, Router cap and put a new Fuel filter on it. (I was tunning my Bronco so I bought everything twice.) I thought this would fix the problem but it didn't.

I wanted to post this to see if anyone had any other ideas. I will look into my Manuel to check where everything is and see if I can do it today.

If you have any better ideas, let me know.

thanks a bunch!!!!!

 

[BroncoJoe19]

I'm not familiar with the vane air system, but will ask a couple of questions and give some general advice until better help arrives /emoticons/[email protected] 2x" width="20" height="20" />

First... prior to pulling codes, you should check for vacuum leaks, that your air filter is clean, that you have proper coolent level, and that your engine is up to operating temp.

Insufficent coolent, or an engine that is not up to temp could give one the temp sender code.

When you ran the KOER Key On Engine Running part of the test, it appears that you did not do the throttle test, and based on that I would bet that you didn't do the power steering test (turn the wheel back and forth) If not, that may have given you the power pressure code.

Here is a little ditty I wrote up about pulling codes, and checking for vacuum leaks.

Please read through it, fix any vacuum leaks and then re-pull your codes.

Then get back to us, hopefully we will be able to give more specific information.

EIDT: Sorry I forgot to include the link

http://broncozone.com/forums/index.php?s=&...ost&p=74581

 

[shift1313]

joe you forgot the link

 

[BroncoJoe19]

Here is more info on code 54

see.

http://www.fordfuelinjection.com/?p=29

Before you start blaming the air charge temperature sensor and replacing it make sure the rest of the coolant system is in good condition. All of the following items will affect the ACT:

 

[BroncoJoe19]

Broncolovernewmember,

I just read your sig file and laughed out loud!

All I can say is... Its True! Its True!

LOL

For future reference it would be good to include info about your wife's truck such as engine, year, miles and other particulars in your sig file.

 

[miesk5]

In addition to the great info Joe suggested;

21 ECT (Engine Coolant Temp Engine coolant wasn't brought up to normal operating temperature or ECT sensor is bad.

If c oolant was less than 50 deg F for KOEO run engine until it reaches Normal Op temp; or less than 180 deg F for KOER, or greater than 250 deg F for either. If coolant temp is in proper range, suspect ECT sensor. (It won't be, for KOER tests on cars that have a 160 deg F thermostat!)

[url="http://This%20measures%20the%20temperature%20of%20engine,%20and%20has%20a%20great%20impact%20on%20fuel%20ratio.%20This%20makes%20simple%20work%20of%20enriching%20the%20mixture%20on%20start%20up,%20overheating,%20and%20full%20throttle%20fun.%20It%20also%20allows%20us%20to%20lean%20out%20the%20mixture%20at%20certain%20times,%20to%20shorten%20the%20time%20it%20takes%20to%20warm%20up%20the%20engine%20helping%20us%20get%20great%20fuel%20economy.%20The%20Engine%20Coolant%20Temperature%20(ECT)%20sensor%20is%20a%20thermal%20transistor,%20which%20means%20it%20allows%20less%20electricity%20to%20pass%20through%20the%20sensor%20the%20warmer%20it%20gets.%20The%20ECT%20receives%20the%20