98 Tahoe Cat's bad?

[reloder28]

Comedy of errors chain of events:
Jan 2013 - CSPI went out, new MFPI installed $800
Jan 2013 - Cracked head dumping coolant into the exhaust - $2200
Dec 2013 - Threw code, major tuneup - $500 Threw another code en route home from repair shop. Returned to shop and the code read "right bank rich" so said the mechanic. He said it meant the converters were bad due to the fuel rich situation prior to tune-up. SES still illuminated. Engine runs fine except it's a slug.

I began to wonder if possibly the cat's survived ($800..ouch!!) and maybe the O2 sensors were the culprits of the new code.

Opinions?

P.S. what's next? Geez. I think it's time for a Toyota.

 

[lesterl]

#1 TOYotas fail also, that is why shops exist to repair them.
#2 $2200 for a head, find another shop.
#3 the coolant could have killed an O2 or the converter.
#4 define "major tuneup"....
#5 if it is a slug, quite possibly you have a plugged up cat, unbolt the cats, tie up out of way, take a VERY NOISY spin around the block and see if power is back.

 

[reloder28]

The $2200 was a complete head job with one replacement.
Major Tuneup - plugs @ $10 each, AC Delco wires, Coil, Cap, Rotor

 

[lesterl]

Must have been an OEM head, I picked up 2 new ones off Ebay for $400 for a truck I worked on last year....

Why was the tuneup done? What were the symptoms leading up to the tuneup?

How did the CSFI unit fail a year ago? Dumping fuel?

I would wonder if the Cats did survive, would need to check back pressure to find out, or like I said (and have done before) disconnect the cats and see how it runs, or you could check temps of the cats if you had a non contact thermometer....

http://www.youtube.com/watch?v=9VZ5K8n5jj0

 

[reloder28]

Severe random misfire dictated the tuenup.

CSFI began dumping fuel.

I have an infrared thermometer &I will check them. Thanks for the YouTube link.

 

[lesterl]

NP, let us know how it goes.... What was the code set with the severe random missfire?

 

[reloder28]

I did not ask the code number. Just had them fix it.