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I have a 97 Ford Explorer with 157,000 miles - great ...


Sent to Car Experts May 09, 2006 10:32 a.m.
I have a 97 Ford Explorer with 157,000 miles - great vehicle and I love it! I have had a check engine light on for a while - probably an emissions problem. I have been very faithful about oil changes, etc. When I started my car today it backfired through the air intake and blew away the plastic cover??? Help what caused this! My husband is a very good mechanic, but on older vintage cars like a 56 Ford, 55-57 chevys, ford and chevy trucks. He can fix most anything but the newer fuel injected computerized things are more difficult.

Optional Information:
1997 Ford Explorer 4.0-push rods

Already Tried:
Removed the parts of the air intake to start trouble shooting.
Customer (name blocked for privacy)
Status: Closed   Value: $15   
Answer
May 09, 2006 1:40 p.m. (3 hours and 7 minutes later) 		ACCEPTED Check Mark
I would definately check for restricted exhaust on this.Have you had any power loss recently?

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"It is much wiser and cost efficient to ask a question than to stumble blindly through your auto repairs".Please Click Accept if my answer was helpful.

1 Other Expert Agrees with this!
PictureMichael  -- Auto Service Technician -- 99% Positive Feedback on 597 Car Accepts
21yrs.Foreign and domestic driveability diagnosis and repair/ ASE Cert./Fuel Injection Specialist.
Reply to Michael
Sent May 09, 2006 1:56 p.m. (15 minutes and 25 seconds later)
I have not had any power loss. My husband thought it was an intake problem - the upper intake mainford-the plastic housing broke into several pieces when it back fired.
Customer (name blocked for privacy)
Info Request
May 10, 2006 5:37 a.m. (15 hours and 41 minutes later)
YIKES!!!!Never heard that one before.I'll do some research and get back to you.Meanwhile your question will remain open for other Experts who may have run into this issue before.

__________________
"It is much wiser and cost efficient to ask a question than to stumble blindly through your auto repairs".Please Click Accept if my answer was helpful.
PictureMichael  -- Auto Service Technician -- 99% Positive Feedback on 597 Car Accepts
21yrs.Foreign and domestic driveability diagnosis and repair/ ASE Cert./Fuel Injection Specialist.
Reply
Sent May 10, 2006 6:03 p.m. (12 hours and 25 minutes later)
Relist: I want a different opinion.
Customer (name blocked for privacy)
Info Request
May 11, 2006 1:45 a.m. (7 hours and 42 minutes later) 		REPLIED to Info Request Check Mark

Do any of the vaccuum lines going to the intake smell like fuel? Have you ever checked the trouble code for the engine light? That will probably give a good idea to what might be going on here.



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PictureJames  -- Helicopter mechanic -- 92% Positive Feedback on 42 Car Accepts
6 yrs helicopter mechanic on Blackhawks and Hueys
Reply to James
Sent May 11, 2006 10:41 a.m. (8 hours and 55 minutes later)
No fuel smell, however the inside of the intake manifold was coated with an oily carbon like residue. We will check the trouble code.
Customer (name blocked for privacy)
Info Request
May 12, 2006 2:20 a.m. (15 hours and 39 minutes later) 		REPLIED to Info Request Check Mark

Have you got those trouble codes yet?



__________________
If this helps, please ACCEPT. In not, send me a reply and I will help you further.
PictureJames  -- Helicopter mechanic -- 92% Positive Feedback on 42 Car Accepts
6 yrs helicopter mechanic on Blackhawks and Hueys
Reply to James
Sent May 18, 2006 4:15 p.m. (6 days and 13 hours later)
Finally got the trouble codes today - Cam positioning sensor and Ignition coil sensor. My husband is reading up on the problems and I believe he is replacing the Ignition coil sensor
Customer (name blocked for privacy)
Info Request
May 19, 2006 12:52 a.m. (8 hours and 37 minutes later)
Sounds like you're on the right track now. I'm certain after replacing one or both of those sensors you will be back in shape. Let me know how it all turns out.

__________________
If this helps, please ACCEPT. In not, send me a reply and I will help you further.
PictureJames  -- Helicopter mechanic -- 92% Positive Feedback on 42 Car Accepts
6 yrs helicopter mechanic on Blackhawks and Hueys

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