02 Rendezvous Cylinder 5 Misfire and Random misfire detected
#1
02 Rendezvous Cylinder 5 Misfire and Random misfire detected
Hi I have a 02 Rendezvous it runs but it has misfire when driving and a loud noise towards the top end under load. I'm not sure what it can be and I have a video of what it'* doing here. www.youtube.com/watch?v=GMquaYvgRUk
#3
Senior Member
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The missing hose at the rear corner of the intake manifold connects from that port then a 90* elbow sends it toward the drivers side of the intake manifold where it connects onto the MAP sensor.....in your video you can see the clip that is holding the three spark plug wires together. The clip is resting on top of the letters "SFI". Well if you look at the other spark plug wire clip, that clip is resting on the MAP sensor.
#4
Senior Member
Posts like a Supercharger
The missing hose at the rear corner of the intake manifold connects from that port then a 90* elbow sends it toward the drivers side of the intake manifold where it connects onto the MAP sensor.....in your video you can see the clip that is holding the three spark plug wires together. The clip is resting on top of the letters "SFI". Well if you look at the other spark plug wire clip, that clip is resting on the MAP sensor.
The other port at the other end of the intake manifold....there is supposed to connect onto the transmission.
The noise you hear could be "piston-slap". Does the sound go away after the engine is fully up to operating temperature?
Last edited by 1.8TTony; 08-26-2015 at 03:15 AM.
#5
Senior Member
Posts like a Supercharger
Here is a link to a pic of that rearward vacuum port.....see how the hose comes off it and travels towards the passenger cabin of the car........different vehicle......same system.
http://troubleshootmyvehicle.com/gm/...crank-sensor-1
http://troubleshootmyvehicle.com/gm/...crank-sensor-1
Last edited by 1.8TTony; 08-26-2015 at 03:22 AM.
#6
Here is a link to a pic of that rearward vacuum port.....see how the hose comes off it and travels towards the passenger cabin of the car........different vehicle......same system.
Part 1 -How to Test the 24X Crank Sensor (GM 3.1L, 3.4L)
Part 1 -How to Test the 24X Crank Sensor (GM 3.1L, 3.4L)
#7
Senior Member
Have you addressed the cyl #5 misfire?
Have you checked for spark at the end of the 5 and 2 wires? Is there corrosion on the 5/2 coil terminals?
Have you ohmed out #5 injector(disconnect harness and attach ohm meter to the appropriate circuits?
Have you checked for spark at the end of the 5 and 2 wires? Is there corrosion on the 5/2 coil terminals?
Have you ohmed out #5 injector(disconnect harness and attach ohm meter to the appropriate circuits?
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