Feels like a misfire under load 🤷****♂️

[blue62]

Originally Posted by colacharlie

‘’A proper vacuum gauge is very inexpensive and a valuable diagnostic tool.
The first Vacuum test to do is:
Find a place to connect the gauge directly into the intake.
Have the car fully warmed up:
Let the car just Idle (I believe you Brits call it tick over)
Record the reading and very importantly the action of the needle if any.
Ideal reading is 18-22 in.hg with a rock steady needle.
Watch the gauge for several minutes at idle look for any changes in reading or needle action’’



Guys I’ve read your other posts like ‘car dies’ but can’t work out where I’m meant to be connecting for the vacuum test. Might you post a pic of an arrow pointing to the location of it in the engine bay please?

Your engine is a little different then mine (I have a 2000S 3.2) so layout may be different.
But if you go to post #50 in the "Car Dies" there is a picture of part of the intake.

Also anyplace after the throttle body that you can attach your vacuum gauge to.
The gauges usually come with a section of hose and "TEE" fitting. So look for a small hose coming off of the intake then use the "TEE" fitting to connect up.
If that is of no help let me know and we will get you sorted.

A few questions:
If you sit in neutral or park can you make the engine judder or misfire by working the throttle or does it on happen while driving.?????

In the video you exhaust sounds a little odd to me even at idle.
Is there any possibility of an exhaust leak????

Could just be the fact that is is a video.
But need to rule things like that out.

Is it a stock exhaust system or aftermarket???

Try this as a test:
Disconnect your MAF sensor (just unplug it) then take the car for test drive. Let me know if it changes anything.

[colacharlie]

Originally Posted by blue62

Your engine is a little different then mine (I have a 2000S 3.2) so layout may be different.
But if you go to post #50 in the "Car Dies" there is a picture of part of the intake.

Also anyplace after the throttle body that you can attach your vacuum gauge to.
The gauges usually come with a section of hose and "TEE" fitting. So look for a small hose coming off of the intake then use the "TEE" fitting to connect up.
If that is of no help let me know and we will get you sorted.

A few questions:
If you sit in neutral or park can you make the engine judder or misfire by working the throttle or does it on happen while driving.?????

In the video you exhaust sounds a little odd to me even at idle.
Is there any possibility of an exhaust leak????

Could just be the fact that is is a video.
But need to rule things like that out.

Is it a stock exhaust system or aftermarket???

Try this as a test:
Disconnect your MAF sensor (just unplug it) then take the car for test drive. Let me know if it changes anything.

I’m not sure what this was attached to but do you mean put the pressure Tester tube on here?

[colacharlie]

Originally Posted by blue62

Your engine is a little different then mine (I have a 2000S 3.2) so layout may be different.
But if you go to post #50 in the "Car Dies" there is a picture of part of the intake.

Also anyplace after the throttle body that you can attach your vacuum gauge to.
The gauges usually come with a section of hose and "TEE" fitting. So look for a small hose coming off of the intake then use the "TEE" fitting to connect up.
If that is of no help let me know and we will get you sorted.

A few questions:
If you sit in neutral or park can you make the engine judder or misfire by working the throttle or does it on happen while driving.?????

In the video you exhaust sounds a little odd to me even at idle.
Is there any possibility of an exhaust leak????

Could just be the fact that is is a video.
But need to rule things like that out.

Is it a stock exhaust system or aftermarket???

Try this as a test:
Disconnect your MAF sensor (just unplug it) then take the car for test drive. Let me know if it changes anything.

Driven with MAF unattached and no change really.

Here’s a pic of my vacuum test and it shows a very steady 15 hg so …. Now I’ll do the durametric