Question about 1999 GMC Suburban

1 Answer

99 gmc suburban throwing crank shaft postitioning sensor circut code after full engine replacement turning over with fuel correct timing triple checked tdc no spark replced coil pack and cps with new parts still no spark no fire at all checked circuit from cps to computer and have no breaks in continuity why code why no spark ?

Posted by on

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Master
  • 2,101 Answers

Are all the ground wires hooked up

Posted on Jan 03, 2013

Ad

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Ad
  • 1214 Answers

SOURCE: 1997 GMC CRANKS NO START

Go to a library that has a set of the factory service manuals (not Chlton's or Haynes or Motor's). The FSM's will give you all the trouble hotting charts that the dealer techs use.

Posted on Feb 01, 2009

dennymulford
  • 1055 Answers

SOURCE: 1997 GMC CRANKS NO START

check the ecm fuse and power wire from starter

Posted on Feb 01, 2009

  • 5 Answers

SOURCE: Miss fire code on computer

check fuel pressure regulator for bleeding.

Posted on Mar 22, 2009

  • 33 Answers

SOURCE: i have a 2003 gmc yukon, i have misfires on1,3,5 and 7 cyclinders mainly on 1 and 7. i've replaced spark plugs,wires and cam shaft position sencor. i've check fuel presure and it was fine, checked fue

either a new clutch or timeing belt. hopefully the trasmission is ok

Posted on Jun 02, 2009

Outofworkjoe
  • 216 Answers

SOURCE: rough idle

Yes bad o2 sensor,check for vacuum leaks also.do you cross your plug wires?

Posted on Jun 26, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

3 Answers

Excessive crank time on cold engine start


The way the newer systems work the engine spins at least a few turns while the computer checks everything for correct readings. In the old days it was "cool" to be able to reach in and "bump" the key and have the car start. It meant you had the car tuned perfectly. Now the vehicle computer will not turn fuel on until it is happy with readings. One trick you can try is turn key to full on position and let it sit for a second or two before turning key the rest of the way to crank. This allows the system a second to do it's checking without wasting power cranking. Had Nissan that was just like this. Just wait a few beats before turn to full crank. You can also listen for fuel pump whine in that few seconds, and then hopefully whine to stop when pressure hits full. If whine never stops fuel pump may be getting weak. If you can get access to higher end code reader you can also check for "pending" codes that may be showing up sometimes (holding start up) but then working (so engine finally fires).

Feb 27, 2015 | 2000 Isuzu Rodeo

1 Answer

Starting issues


Yes, the crank shaft position sensor tells the engine when to send fuel and spark to the cylinders in conjunction with the camshaft position sensor. If the crank sensor isn't working properly, the engine doesn't know when do do anything. Depending on what the other codes where, I'd highly suspect the CPS. It's not terribly hard to get at nor expensive of a part, but you will need a diagnostic scanner capable of doing a Crankshaft Learn procedure.

Jan 13, 2014 | 1999 GMC Jimmy

2 Answers

99 GMC suburban 5.7l P1345 wont start/misfire


The primary intent of this code is to detect slipped camshaft timing. Have you checked the camshaft timing? Your symptoms indicate you are a tooth off.

May 24, 2017 | 1999 GMC Suburban

1 Answer

My 1997 gmc 1500 suburban will not run but it pulls no dtc codes on the cpu


My 97 Suburban had a similar problem. Would not crank on a regular basis. Replaced spark plug wires, plugs and rotor cap. Vehicle cranked and ran just fine, plugs were in poor shape. Checked fuel pressure, above 55psi with engine running or just the switch turned on. Immediately after switching engine off the pressure would bleed off to "0" PSI. Otherwise everything OK. Problem solved, so I thought. A couple days latter I had to make a road trip from Mobile, Al to Fort Meyers, Fl when cranking problem re-occurred after approx. 100 miles into trip. I stopped at parts houses on the way to ask questions and to obtain their best ideas, at times it would take 30 minutes before engine would again crank after making a stop. I replaced almost all of the sensors. Finally made it to Fort Meyers that night. Next morning vehicle was dead would not crank no matter what I tried. Fuel pressure OK. Only thing left to replace, Fuel Injector spider system. Problem solved.

Jul 19, 2012 | 1997 GMC Suburban

2 Answers

99 suburban runs rough throughout driving range little bit of backfire wants to die but rumbles on.


Any Service Engine light? If so, the first thing that should be done is to get whatever codes are stored. Most part stores will hook up a generic code reader for free.
Last time plugs, wires, fuel filter, etc. was done?

Nov 02, 2011 | 1999 GMC Suburban

1 Answer

My check engine light is on my 1999 GMC suburban and the fault code that comes up is related to my crank shaft positioning sensor i have no symptoms of any problems although i do have some acceleration...


the cam pos sensor and crank pos sensor run hand in hand to controll your ignition timing and spark advance among other things. if any of your sensors are triggering a code or codes you should write them all down then clear them. when the light comes on compare what you had to what you have now. if you have one that keeps coming back change it it is probably the problem.

Nov 04, 2010 | 1999 GMC Suburban

1 Answer

Engine will not crank, car just stopped running, then towed home, hooked up code reader and car was not throwing out a code. then i checked the coolant sensor. it was bad replaced. then code poped up cam...


If there were no codes present upon initial inspection, check for fuel pressure and replace the pump if nothing or little is present. This is most likely with no codes. Also replace the filter. Let me know if you need instructions on pump replacement.

Oct 24, 2010 | 2003 Chevrolet Suburban 1500

2 Answers

Code p0340 on 2000 dodge intrepid


it might be the cam shaft sensor it might be the crank shaft sensor the best thing to do is replace them bolth. but it does sound like it may be either one because if one goes out the other will still work but when starting the car it will take longer for it to read from either or the one sensor that is still working because they work together to tell the system to deliver the gas. im pretty positive that it is either the cam or crank shaft sensor

Jun 21, 2010 | 2000 Dodge Intrepid

1 Answer

99 Gmc Suburban


On the 1999 - 2000 5.7 vortec engines the distributor gears wear causing the timing to change 2 or more degrees. The ecm is designed to shut down at 2 or more degreedifference. This is in a GM bulletin that recommends replacement at 160k miles. Mine went out at 150k miles. Very similar driving symtoms until it quit running. Both cam sensor codes were set on mine though, not the crank sensor.

Aug 05, 2008 | 1999 GMC Suburban

Not finding what you are looking for?
1999 GMC Suburban Logo

81 people viewed this question

Ask a Question

Usually answered in minutes!

Top GMC Experts

yadayada
yadayada

Level 3 Expert

76691 Answers

Freddy

Level 3 Expert

1311 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22219 Answers

Are you a GMC Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...