Miss Fire/chugging

C

crs.5.0

New Member

May 20, 2013

2

0

1

May 20, 2013

#1

• May 20, 2013

• #1

I have been having some trouble with my 5.0...it recently started chugging and miss firing. it seemed like it might be a bad distributor so i replaced that and set the timing did everything right. it seemed to help the problem but its still there. it idling at about .6 and when i start to accelerate it seems to bog and slowly accelerate but if i get on it it helps a little...any body know what it might be

 

94GTCoupe

10 Year Member

May 7, 2006

1,412

92

79

CA

May 20, 2013

#2

• May 20, 2013

• #2

Welcome!

Pull codes and report back.

 

Yellow302

Member

Mar 2, 2003

789

2

19

NJ

May 20, 2013

#3

• May 20, 2013

• #3

Sounds like you are down a cylinder. could be a bad spark plug or wire.
Happened to me once upon a time.

 

toyman

10 Year Member

Jul 19, 2007

1,944

54

79

Vernon BC

May 20, 2013

#4

• May 20, 2013

• #4

Also, clean the MAF with MAF or equivalent cleaner. Probably the most overlooked tune-up item.

 

9

95steeda

Member

Oct 14, 2003

37

0

7

May 20, 2013

#5

• May 20, 2013

• #5

Make sure your harmonic balancer is still good.

 

C

crs.5.0

New Member

May 20, 2013

2

0

1

May 29, 2013

#6

• May 29, 2013

• #6

I just took it to a shop n had them hook the computer up...it said that the MAF was bad and the IAC was bad...i replaced the MAF and still no luck. So i replaced the IAC and once again no luck its still acting up. From what i have read it might be the TP sensor because it wants to die when i come to a stop and it runs ok as long as im above 2 grand...any other ideas

 

Sn(95)

New Member

May 29, 2013

19

0

1

Wichita KS

May 30, 2013

#7

• May 30, 2013

• #7

I would do a quick tune up on it, if its been a while. Wouldn't hurt either way. It does sound like the tps sensor I would get a Volt meter and check it, do you know how to check one? It could be as simple as unbolting it and angling it another way.