95 sho dieing

[Thermopyle]

I've searched around the forums, but I haven't been able to find a thread dealing with this particular issue....

I have a 95 sho mtx. The problem I am having is that it dies while driving at odd intervals. Sometimes right after I pull out of my driveway and sometimes after I've drove 70 miles. After it dies it refuses to start back up. It will turn over just fine, but that's all. After I wait from 15-60 minutes it will fire up with no problems.

The service desk as the Ford dealer told me that I'll have to wait till it stops working completely for them to be able to diagnose it. I don't like the idea of my wife setting on the side of a dark road in a dead car.....

Any ideas?

 

[Mr Anonymous]

You'll need to start by reading the codes. In my signature there are three links, any of which will teach you how to read them and what they mean. It can be done with something as simple as a paperclip or short piece of wire.

Let us know what codes you find and that will help us assist you in diagnosing and resolving your problem.

 

[luigisho]

Sounds like a crank sensor failure but checking the codes is the first logical step. Follow the links in SHOooo's post to be able to do this easily yourself. At the dalidesign site your EEC-IV codes will be 3 digits.

 

[projectSHO89]

Next time it stalls, observe the CEL and the tach while cranking.

Does the tach register anything?

Does the CEL stay on while cranking or go out after a second or two?

Steve

 

[Thermopyle]

I get 211 and 542 when running both the KOEO and KOER tests.....

 

[Mr Anonymous]

Yup, that 211 code indicates a likely faulty CPS (Crankshaft Position Sensor). Replacing it yourself is far from impossible, but it can be a daunting task for someone not comfortable or familiar with working on cars.

The procedure can be reviewed in this article from www.shotimes.com.

When replacing the CPS, there are some other preventative/routine maintenance items you may want to attend to at the same time such as a new timing belt, and possibly a water pump if there are signs of leaking (which is often how CPS's fail -- the water pump leaks right on to the sensor). You can familiarize yourself with the items by searching the forum for '60k' or 'front 60k'.

The 542 code may indicate a faulty fuel pump or a CCRM fuel pump relay problem. The first logical step would be to test your fuel pressure at the schrader valve which sticks up from the front fuel rail between the intake runners (snakes).

 

[luigisho]

Doesn't the 542 get thrown when it stalls? I think CPS is the only faulty part but Chris is correct with maintenance. It will already be exposed so you won't duplicate labor down the road.

 

[Thermopyle]

Good deal. I'll post back with results. Thanks for the advice!

 

[Markus]

luigisho:
Doesn't the 542 get thrown when it stalls? I think CPS is the only faulty part but Chris is correct with maintenance. It will already be exposed so you won't duplicate labor down the road.

Diagnostic Trouble Code (DTC) 542 indicates that one of the following has occurred:

No Start:
• Inertia Fuel Shutoff (IFS) switch not reset or electrically open (if in secondary circuit).
• Open circuit between the fuel pump and Fuel Pump Monitor (FPM) circuit connection to power-to-pump circuit.
• Poor fuel pump ground.
• Fuel pump electrically open.
Engine Starts:
• Fuel pump secondary circuit short to power.
• Fuel pump relay contacts always closed.
• Open in FPM circuit between Powertrain Control Module (PCM) and connection to power-to-pump circuit.
• Left/Front Heated Oxygen Sensor (HO2S) short to power (dual HO2S applications).
• Damaged PCM.

<small>[ April 05, 2003, 08:38 PM: Message edited by: Markus ]</small>