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post #1 of 5 (permalink) Old 12-11-13, 04:50 PM Thread Starter
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Merkur XR4Ti stalls during heavy acceleration

I'm new here and I think this is the right place for my issue.
I've posted on a Merkur forum but it has a lot less traffic.

I just picked it up the other day and this is the only main mechanical issue with the car.

The car idles good and runs great under low acceleration.
If I floor it, it will shut off.
Basically, if I stay out of boost, it runs fine.
Previous owner thought it may be a plugged cat and was causing too much back pressure. I checked the temps and the outlet of the cat is about 50 degrees F cooler than the inlet. So, it seems to be working.

The exhaust is full 3" with a high flow cat, some sort of glasspack, and then a supertrapp at the end. Not a fan of the supertrapp and planned on removing it and also wonder if that could be causing the back pressure but the car was driven for a few years with that exhaust setup.

I have yet to disconnect the exhaust and drive it to see if that solves the issue. I'm currently waiting for a day when the roads aren't covered in snow to drive it again.

I'm not sure what the issue behind this is so I thought maybe someone on here could help me out.

Thanks

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post #2 of 5 (permalink) Old 12-11-13, 07:07 PM
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Re: Merkur XR4Ti stalls during heavy acceleration

What year and what engine? I'd still check for a plugged exhaust too. What's the vacuum at idler and what does it do when you raise the RPM to 2000RPM and hold it there?

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post #3 of 5 (permalink) Old 12-11-13, 08:08 PM Thread Starter
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Re: Merkur XR4Ti stalls during heavy acceleration

1987. turbo 2.3 lima motor
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post #4 of 5 (permalink) Old 12-11-13, 09:19 PM
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Re: Merkur XR4Ti stalls during heavy acceleration

What about the vacuum readings?

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post #5 of 5 (permalink) Old 12-11-13, 09:25 PM Thread Starter
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Re: Merkur XR4Ti stalls during heavy acceleration

I will have to check tomorrow.
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