How do I replace the fuel injectors on a cts 3.6 cadillac? dose the upper manifold have to be removed, how do I bleed the presure off the fuel rail? Thanks for your help.
First off..Do you have the High Pressure direct injection 3.6 LLT engine or basic 3.6 Engine ? Yes the upper Plenium has to come off, but you will have to probably pull your wipers off, and the 7mm screws that hold the cowl beauty panel on and then there is enough cleareance to remove the plenium, disconnect throttle body snorkel tube at throttle body, remove 10mm bolt at brkt drivers side of throttlebody (ball stud) if I remember right, then there are 13mm bolts at back besides the obvious ones you can see and carefully lift it up off engine, thenyou can get to rails for the injectors, to bleed off 3.6 low pressure fuel system pull fuel pump fuse in trunk fuse box and start it let it run out of gas, then bleed Schrader valve too on rail, if you have a high pressure direct injection llt engine let me know, will describe procedure to you
Will you please describe bleeding off a high pressure direct injection llt engine? Thanks!
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SOURCE: how do i replace fuel pump on a 2006 CTS Cadlly
You must remove the fuel tank from the vehicle to get to the fuel tank module. Your vehicle is equipped with two fuel tank modules that are connected by a tube inside the fuel tank. The primary module is the one on the left side and it is the one that contains the fuel pump.
Have you scanned your computer system to verify that there is not a problem with the security system or the fuel pump circuits? Did you actually check for fuel pressure at the fuel rail? I'm only asking because dropping a fuel tank and replacing a fuel tank module is not easy or cheap....A BIG investment if you are not absolutely certain that this will fix your problem.
SOURCE: 1991 cadillac deville 4.9 fuel trouble
You just need to go through a simple Idle Relearn Process.
The Idle Speed Control motor will cause the accelerator pedal to tap and the car will surge back and forth, actually acting like there is a lack of power during intial startup.
Whenever a battery is changed, went dead or the ECM computer is replaced.
In order to make the engine run normal again, you need to take the car through a relearn process. Otherwise the idle could be very slow or have a 30mph idle.
To enable it to relearn, here's what to do.
1) Disconnect the battery cable for 15 minutes, before hooking it back up.
2) (KOEO) Turn the Key On with Engine Off, just so the electronics are on, but without starting the engine and turn the climate control panel to off.
3) Push the off and warmer buttons on the climate control panel at the same time and hold for up to 5 seconds for the computer to go into diagnostics.
On the fuel panel screen it will display 888 then E52 and then 70.
When it gets to 7.0 shut off the key for 1 minute.
4) Repeat step 3, two more times.
5) Start the engine without pushing on the accelerator pedal and let it run for 18 minutes with the climate control panel off.
6) After 18 minutes put your foot on the brake and shift into drive and wait 1 minute.
7) Then turn on the a/c by pushing the auto button. It needs to be warmer than 60 degrees F so the compressor can engage. Wait 1 more minute.
8) Put the shifter back in park and turn the key off.
9) Wait 1 minute
10) Idle relearn is now complete and the engine should start and run correctly.
SOURCE: 95 cadillac deville whith both o2 sensor sending
This may be the result of a faulty catalatic converter, get the exhaust checked out as My 97 caddy had simialr readings. Good luck
SOURCE: 99 Cadillac Deville, fuel pump replaced, new
in this case i suspect air intake,did you replace the air filter?or get the air intake regulater checked to what you are saying its one of those two.adrian,,,
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