Project Cars or Member’s Cars sub forum for the build threads so readers can follow the creation or re-creation of a high performance Caddy. Whether it is a CTS-V, a 1970 Eldorado, a Northstar powered Eldo, etc. , an organized way of finding and enjoying and learning from others who have the need to modify their rides for performance or racing.
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18X10 wheels in all four corners with 275/40ZR18 tires. My search for a suitable performance wheel and tire package is finally over. I am finally satisfied.
I lost just a little bit of steering, so I may add 1/2" hubcentric spacers with longer studs. It'll help fill up the fender lip overhang and will give me close to a full lock-to-lock turning ability.
Thanks for advice. Just wanted to let people no what I had done so that they don't mention those things. This is the Northstar V8. When codes revealed lean BANK 1 and Lean BANK 2, I assumed they were talking about banks of coils. Thanks for reply!
Lean codes P0171 and P0174 means you have a vacuum leak they have nothing to do with the coils.
The lean codes could cause the P0300 misfire code also
Borrow a fuel pressure gage and test fuel pressure, the presence of fuel means nothing.
You did not state what engine this is 3.6 or NS?, unless I missed it. The 3.6 had timing chain issues that would cause a no start.
Just a constructive advice, huge tight paragraphs like that are difficult to absorb. Next time try breaking up similar thoughts.
So I bought a 2005 Cadillac Deville Base 195K on it about a month ago. Paid 1k for it because it didn't run and it looks like new. Previous owner came out to the car one day and it wouldn't start and he couldn't figure it out. This was about 2 weeks after he had fuel pump put in. I have owned this car before, 2004 Cadillac Deville DTS, and pretty familiar with these cars as I was constantly having work done on it. Anyways I bought the car and towed it on a Uhaul car hauler to my garage where I have been troubleshooting for the last couple weeks in my spare time. I immediately figured it was a ground fault problem as I have seen this before on my previous Deville. I checked all the ground locations: off the battery, ground to body, ground to engine and they all checked fine. I checked all relays and fuses that were related to Ignition and fuel. I also checked with a multimeter and was getting 12.4 volts at the engine. This led me to believe that it wasn't a ground issue and must be a starter issue. So I ordered a starter and dove into that project. Again I had to replace starter on my 04 Cadillac Deville so I know how to do it. However once I accessed the starter the bolts were seized on and eventually I stripped the bolts. I tried using extractor sockets on it with little success. Must be really seized. I talked to a local machinist and he suggested breaking the bolt tabs on the starter to access the bolts and allow penetrating oil to work. This is a last resort to me. Little worried that I could do more damage. I had previously soaked with penetrating oil and even candle wax but the bolt was so tight I can't imagine any was working its way in. I also tried using a propane torch to heat the bolt up but only got heat on it for a couple of minutes as my propane canister ran dry. So I decided to test the starter while still on the car by jumping the ground post to other post and then ground to little post on the starter. Hopefully that makes sense. Both actions showed the starter working as it should. So led me to believe the starter was fine. I had battery load tested and it showed bad battery. I replaced with new Group 79 battery 840 CCA. This is the battery designed for car. Still no change. Crank but no start. I hear the fuel pump run. I even disconnected the fuel lines at the engine and placed in a container and turn the car to on. There seems to be plenty of fuel. Not sure on pressure but I would think there would be enough to start the car. Maybe I'm wrong on that. I checked the codes on the dash screen and with my cheap scan tool. Scan tool picked up: P0016 Crankshaft sensor, P0122 Throttle Pedel, P0171 Lean Bank 1, P0174 Lean Bank 2, P0300 random misfires. Sorry for abbreviated code terms. The dash screen were several driver and passenger door module codes and a few lost communication codes which doesn't surprise me because of the bad battery and draining battery several times trying to start car. I did some research on crankshaft sensor and that could cause a no start situation. Last night I replace both crankshaft and camshaft sensors. It was a real P.I.T.A, took me way to long and was very tight but I got it done. Tried to start car and no change. I know from the Lean Bank 1 & 2 codes that the coil packs are probably bad but could this cause a no start situation? Again I had to replace coil packs on my 04 Deville. They were kind of expensive if I remember right and had to replace whole pack instead of individual ones. Does that sound right? Is there way to check these in a junk yard? Multimeter and checking continuity maybe? Should I go back to looking at starter? With mileage, I am sure that it needs spark plugs but would that cause a no start? Thanks for any advice! Kind of tired having this car in my garage and I want to drive it!