Engine Power loss, especially when uphill?

KATS4V

MEMBER
2008 FORD TRANSIT
2.2L
4 CYL
TURBO
2WD
MANUAL
155,000 MILES

The past week I had some stalling happening while on idle (engine was warm and temperature was -2). I replaced the fuel filter and that seemed to do the job for 2 days. On the third day it was losing power, especially when uphill and decreasing gears didn't seem to help a lot. Since then, I replaced MAF and MAP sensor, one at a time when I did the MAF it drove as should for about 30 miles, I turned the van off for an hour and then it would start to lose power again. Nothing seemed to change when I replaced the MAP after that happened. I get no error codes neither from my OBDII scanner or forscan (at least anything that might seem related). Any idea what could cause it?

3 Replies

KEN L

MASTER CERTIFIED MECHANIC
47,702 POSTS

Is this a diesel engine euro car? We don't have this in the US until 2009 and it's a non turbo. If it is a gasoline engine, I would check the primary catalytic converter. This guide can help, and I have included the cat system in the images below. When the primary catalytic converter falls apart it will clog the outlet with the catalyst material causing low engine power.

https://www.2carpros.com/articles/how-to-test-a-catalytic-converter

This guide may help as well:

https://www.2carpros.com/articles/engine-has-low-power-output

Can I ask what the codes are anyway? Please go over these guides and get back to us.

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Tuesday, December 5th, 2023 AT 11:23 AM

KATS4V

MEMBER
2 POSTS

Hello Ken, no it's a UK version 2008 Ford Transit diesel 2.2 with turbo, I don't receive any codes or lights, I plugged it in with forscan but nothing related or OBDII codes found.

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Tuesday, December 5th, 2023 AT 12:32 PM

KEN L

MASTER CERTIFIED MECHANIC
47,702 POSTS

Yep, it sounds like the turbo could be going out, I would disassemble the inlet or outlet pipe from the turbo to check the engine play of the turbo shaft, if more than about.030 the turbo is bad. If you have a question about the play upload a short video so I can see and confirm the failure.

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Friday, December 8th, 2023 AT 8:34 AM