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Mistery Die

G

gabocar

New CEG'er
Joined
Oct 31, 2003
Messages
8
Hi :
I hope anyone can help with this mistery trouble. This is the history ;
Last night my tour simply die, i made several tries to start it and nothing. 5 minutes later i made the last try and the tour start without any problem. I use my scanner and nothing appers. No CEL.

I still using the tour without any problem, but i want make some diagnostics to now what happen last night.

Any suggestion, step to check all the possibles troubles. The tour is a 96 V6 AT.
 
gabocar said:
Hi :
...i made several tries to start it and nothing. 5 minutes later i made the last try and the tour start without any problem. I use my scanner and nothing appers. No CEL.

...
Click to expand...

Does it crank but not start? (starter or solenoid). Or slow to crank? (battery). Or does the engine sound like it is cranking very fast? (engine lost compression due to starting and turning off right away). The last time when it started (after not starting for a long time), did you press the gas pedal half way or all the way down? (IAC valve).

Where are you located and what was the temperature when it happened?

Edit. Battery and alternator test in M&M how to.
http://www.contour.org/ceg-vb/showthread.php?t=3535

IAC valve
http://www.contour.org/FAQ/FAQ.php?s=probs&displayid=7

and this.

Idle Air Control (IAC) Valve
Removal

1. Disconnect battery ground cable

2. Remove the air cleaner outlet tube and resonator assembly.
3. Disconnect the main chassis vacuum line.

4. Disconnect the ignition coil and radio interference capacitor wiring.

5. Remove the fuel line bracket retaining bolt.

6. On 2.0L engine equipped vehicles, raise vehicle on hoist.
7.
7. Disconnect the engine control sensor wiring or fuel charging wiring (depending upon application) from the idle air control valve (IAC valve) at the idle air control valve connector.

8. On 2.5L engine equipped vehicles, remove retainer for engine control sensor wiring from the upper retaining stud bolt.

9. Remove the two idle air control valve retaining bolts or stud bolt (depending upon application).

10. Remove the idle air control valve and idle air control valve gasket.

Installation

1. Note: If scraping is necessary, be careful not to damage idle air control valve or intake manifold idle air control valve gasket surfaces or drop material into intake manifold.

Clean idle air control valve gasket mating surfaces.

2. To install idle air control valve, reverse Removal procedure. Tighten the fuel line bracket bolt to 8-12 N-m (71-106 lb-in).

3. On 2.5L engine equipped vehicles, tighten the retaining bolt and stud bolt to 8-12

4. On 2.0L engine equipped vehicles, tighten the idle air control valve retaining bolts to 8-11 N-m (71-97 lb-in).
 
Last edited:
My tour did it again. I drove for 30 minutes without a problem. And die again. The fuel pressure was between 30 a 34 psi, and the pump made the sound when switch is open.
After 15 minutes the car crank but not start, and then start inmediatly. 3 block later the same thing, but this time the tour start only after 5 0 6 cranks. I drove 30 minutes without problems.
Yesterday i cleaned the IAC and check the battery and the fuel pressure. Please help me. Sorry for my written english, i´m a mexican ceg'er
 
Last edited:
The temperatre gauge was in the no"r"mal, and sorry but if the battery's cables are loose, the tour crank? I'm a nowie.
 
I've had my 96 SE MTX die for no reason. Some complete fluke. It was very hot outside. Never came back again.
 
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