PCM P0171 & P0174 history codes

Tiny
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15 for which part is bad?

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Saturday, June 23rd, 2012 AT 3:31 AM
Tiny
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Just a little sarcasium :) I'm glad you guys enjoyed this topic. What kind of money is this going to cost me?

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Monday, June 25th, 2012 AT 12:02 PM
Tiny
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The cost of the repair is going to be based on what the repair entails. It all depends if it is a intake gasket leaking a hose leaking etc. Without knowing the cause cant estimate a repair cost.

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Monday, June 25th, 2012 AT 4:44 PM
Tiny
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Just a follow up guys, I took the car to Tires plus and they chkd it and did a smoke test. They took care my old and cracked vac hoses. But they say it has a pinhole leak in the thottle body gasket. The car shakes horribly at idle. They said it would cost $460 p&L. Does that sound right? Just to change a gasket!

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Tuesday, July 17th, 2012 AT 6:35 PM
Tiny
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The labor would be about 2hrs times what ever there shop labor rate is. Parts would be about 60 depending on how much there marking them up. Also what ever they charge for hazzardous wastes fees etc.

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Thursday, July 19th, 2012 AT 10:45 PM
Tiny
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Had the throttle kit installed. Still have problems. They (tires Plus) even installed new fuel injector rings ($700 total spent). They thinks it's internal because it keeps burning out the spark plug in cylinder #5. I should of just taken it to the Cadillac dealer. Any other suggestions before I shoot it. LOL!

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Tuesday, August 7th, 2012 AT 7:02 PM
Tiny
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Oh, where is the #5 spark plug located? (Actually, I cant find any if them, where are the spark plugs wires located?)

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Tuesday, August 7th, 2012 AT 7:34 PM
Tiny
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I sorry guys, one more small question. Is the resonator and air intake supposed to b clamped together? I think the two are slightly separating because of the rough roads here in PA and because I cant tighten it down. Tonight i'll add washers to the holding screws, hopefully it'll solve the running out of thread problem.

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Tuesday, August 7th, 2012 AT 7:58 PM
Tiny
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Sorry it took so long to get back too you some how I didnt get a email you posted some more responses. You have a coil cassette for each bank of cylinders with boots going from it to your spark plugs.I posted a pic pf it for you iam contaqcting our caddy expert to help out on this question.

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Sunday, August 12th, 2012 AT 7:40 PM
Tiny
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So thats what that is.I thought it was a cover of some sort. LOL! Can u tell me where spark plug #5 is and how to get to it?

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Monday, August 13th, 2012 AT 12:42 PM
Tiny
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I didnt get to read the whole thread. Been sick guys.A history code means a fault happened with that circit. You cant really track it down because it happen so fast. Go in the obd sys. It stops on ecm data then push the high fan button for yes and low for no. Push yes to enter paremiters. Then push no keep pushing no untill u see o2 sensor. Drive the car a make sure the number is going up and down and not stuck on 1 number. Then youll no the o2 is swinging up and down.A history code is really no big deal. When its current then u can follow a code troble tree chart. To pin it down. Hope this helps.U could replaceing the o2 sensors. And see if its stops. Gl

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Monday, August 13th, 2012 AT 5:41 PM
Tiny
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Read a little above your post cadieman now there asking why is the number 5 spark plug keep burning out?Also where it is and how to get to it?

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Monday, August 13th, 2012 AT 7:47 PM
Tiny
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Resestance in the connection to the plug.#5 I would replace the plug and ingnition wire.#5 is the 3rd plug on the front of the engine. Gl

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Monday, August 13th, 2012 AT 11:32 PM
Tiny
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Ok guys, not to leave you in the dark. I took Betsy to the dealership. 1st problem was the fuel pump, instead of 45 psi I only had 30 psi. One fuel pump and regulator installed. 2nd. As for the fuel trim being lean, there was a vacuum hose connector sheared off by tires plus and a couple of gaskets needed replaced. 3rd (and finally), I needed the rear ignition coil and #5 spark plug replaced. Oh she runs like a dream now (let me knock on wood). Please don't anyone ask me how much this cost me, i'm still crying :( I want to thank cadieman & saturntech9 for your help with this craziness. I called Cadillac the other day and told them I thought my gas gauge was broken, it was just I was wasting that much gas! Lol!

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Monday, October 1st, 2012 AT 6:45 PM
Tiny
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Wow sounds like it would have been cheaper just take it to the dealer to begin with thats crazy. Also your are welcome thats what were here for.

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Monday, October 1st, 2012 AT 8:09 PM
Tiny
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Your right! I was expecting $750 -1000 bill. Lol the fuel pump alone cost me $539! They kept adding on, I had already committed myself. If I would have known it would have gonna cost me $2200 to fix it, i've would have went for the new Caddy ATS. Oh well, I guess I have wait till nxt yr.

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Monday, October 1st, 2012 AT 8:17 PM
Tiny
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Oh the cts?I love those cars a expensive repair you had glad I do all my own repiars and all family and friends also that keeps me pretty busy with just those cars.

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Monday, October 1st, 2012 AT 8:23 PM
Tiny
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Not the CTS, the 2013 Caddy ATS. It's "suppose" to compete with the 3-series. Lol, we'll see.

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Monday, October 1st, 2012 AT 8:31 PM
Tiny
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Wow that is a new model.

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Monday, October 1st, 2012 AT 8:40 PM
Tiny
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One thing I like to mention before we stop beating this dead horse; I was told the #5 spark plug was in the front of the engine. In fact, it is in the back (firewall side). That's why I had to replace the rear (firewall side) ignition coil it was burning out spark plug #5.

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Tuesday, October 2nd, 2012 AT 12:26 PM

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