Car dies after changing exaust manifold

Tiny
SAMUTAI77
  • MEMBER
  • 2000 FORD MUSTANG
  • 6 CYL
  • MANUAL
Hi, I have a 2000 ford mustang v6, after changing the exaust manifold and gaskets I start it and the rpms go up and down (1500 to 500 rpms) then my air intake starts making howling noises like gasping for air also a strong smell of gas comes out, I already check all my sensors (maf, tps, iac, iat, egr even the air pump and charcoil canister) they all good they read properly oms and I have their respective voltage on their plugs, I changed all vacuum hoses and gas filter. I also disconnect the catalytic converter to make sure I did not have any obstruction and still have the problem, I put a obd scan and nothing came out, I dont know what could it be, any help ill apreciate thanks
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Wednesday, February 2nd, 2011 AT 3:31 PM

7 Replies

Tiny
DOCFIXIT
  • EXPERT
Check EGHR tube connection on right manifold tight no leaks? Also did all bolt holds line up? What was reason for replacement?
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Wednesday, February 2nd, 2011 AT 4:50 PM
Tiny
SAMUTAI77
  • MEMBER
I replaced it because the muffler support broke and was hanging only by the exaust manifold and then manifold broke, I put a new exaust manifold and a new egr connection tube, all the holes lined up correctly I took it apart twice and tighten up really good I even bought the original gasket for the manifold coz the one it came with looked really cheap, I am going to check how tight is that egr conecction tube and ill get back with a response thanks in advance
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Wednesday, February 2nd, 2011 AT 5:10 PM
Tiny
SAMUTAI77
  • MEMBER
Well I checked and re-tight all the bolts for the exaust manifold and egr conecction, I still have the same problem this loud noise coming out of the air intake (it sounds like when you blow air on a coke bottle but louder)my car keep idleing up and down and eventually dies also still smell like gasoline. No luck so far :(
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Thursday, February 3rd, 2011 AT 1:18 PM
Tiny
DOCFIXIT
  • EXPERT
May have damaged EGR and it is open at idle causing flux and smell check out remove see if pential is open.
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Thursday, February 3rd, 2011 AT 5:26 PM
Tiny
SAMUTAI77
  • MEMBER
Egr is valve is good I replaced that one 2 months ago I tested is close I checked the egr solenoid as well test good, I already checked all the vacuum and emission sensors all of them visually and with my multimeter ( fluke 725 ). I checked for leaks from the exaust manifold and have none ( I had my brother blocking the exaust pipe while the car was runnning I was checking at the exaust manifold I used somenthing is call snoop, is use for calibration on transmiters pretty much is destilled water with a mild soap), im wondering if a defective fuel pump would cause all this headache or maybe the fuel pressure regulator, I hear the fuel pump as soon I start the car, I dont know if the fuel pressure regulator is not regulating.I dont know anymore
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Thursday, February 3rd, 2011 AT 8:12 PM
Tiny
DOCFIXIT
  • EXPERT
Any chance a plug wire got crossed?
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Thursday, February 3rd, 2011 AT 9:25 PM
Tiny
SAMUTAI77
  • MEMBER
Well I finally found the problem it was the egr, got a cheap brand online and the noise still there then I got one from the dealer noise went away car doesn't idle anymore thanks for your support
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Friday, June 12th, 2015 AT 9:21 AM

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