Back firing and hard starting....sometimes

[SLOSHO89]

My SHO has been messing with me occasionaly. So it's time to see if any one around here has any ideas/experience.

The symtoms:

1. Some times it doesn't start right away.

2. This morning it back fired and didn't want to start, but after a couple of tries it started right up. No check engine light. It has back fired maybe two other times(sounded like a Whooosh sort of poping sound).

Once it is started it runs good, doesn't stall etc... I put new temp. senders on it about 3 months ago(both of them).

I'm thinking maybe a bad fuel pump or new plug wires for the hard starting. But the backfiring has me confused(what causes back fire?).

She has about 90k miles on her. New spark plugs(motorcraft).

Any ideas?

Thanks,
Efren

 

[1stGenSHO]

Sounds like the Camshaft ID sensor could be going bad. These symptoms are typical when the sensor is disconnected also.

1stGenSHO

 

[jelloslug]

Does you tach work?

 

[Mr Anonymous]

I concur that it's probably the CID sensor. That would cause hard starting and back firing by not knowing the position of cyl #1.

Also, I think that a 214 code will not fire the CE light, just store the code.

<small>[ November 01, 2002, 03:28 PM: Message edited by: SHOooo ]</small>

 

[RI-SHO]

My first guess from experience now would be timing but since you say once it is started it idles/runs great, it defitnaly sounds like a sensor, more specifically the CID(camshaft positioning sensor).

 

[projectSHO89]

Yep, my vote is with the camshaft sensor also.

Unplug it and see if the problems stay the same with the hard starting/backfiring. You will loose your tach with it unhooked.

Luckily, it's not a hard part to replace.

Steve

 

[SHOtimer]

I have the same problem with my 95 ATX...have put in a new CID, didn't solve anything. And the old one was only 6k old. I am doing a 60k in a month and I hope maybe with new plugs/wires..and other things it will solve itself.
Doug

 

[shojuan]

Check the wiring and connectors to the CID.

Rick