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 > Loss of power when driving

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init6

Near Fredericksburg, VA

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Posted: 07/29/21 06:37pm Link  |  Quote  |  Print  |  Notify Moderator

Just an update…. Have tried a new tank of gas. Ran all the old out first. Replaced the air filter and vacuumed out some deteriorated foam in there with a shop van. Replaced the mass airflow sensor with a new one and still the same issue.

I’m wondering if it isn’t fuel pump or fuel filter related.


2005 Pace Arrow 37c
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Grit dog

Black Diamond, WA

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Posted: 07/29/21 08:00pm Link  |  Quote  |  Print  |  Notify Moderator

Fuel pressure is easy to check and good to eliminate as the problem, but electric fuel pumps usually are good or don't work. Not ususally an in between.


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lryrob9301

Mid-Atlantic

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Posted: 07/29/21 09:25pm Link  |  Quote  |  Print  |  Notify Moderator

Replace your fuel filter !!!


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Janss

Sedona, AZ

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Posted: 07/30/21 12:00am Link  |  Quote  |  Print  |  Notify Moderator

I have the Workhorse 8.1L, but not W24. Few years ago I was driving on the freeway and suddenly heard a loud sort of backfire noise and dropped to about half power. Limped off the freeway at the upcoming exit and went to a repair shop. The O2 sensor in the exhaust pipe had popped out. It was actually hanging down from its wire, creating a hole in the exhaust pipe up in the front half of the chassis. You might want to get under the rig and inspect the whole length of the exhaust pipe.
Another time I was driving on a different freeway and suddenly lost all power. That was a fuel pump failure. No warning. It worked, then it didn't...as Grit dog stated.


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wnjj

Cornelius, Oregon

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Posted: 07/30/21 01:11am Link  |  Quote  |  Print  |  Notify Moderator

init6 wrote:

Just an update…. Have tried a new tank of gas. Ran all the old out first. Replaced the air filter and vacuumed out some deteriorated foam in there with a shop van. Replaced the mass airflow sensor with a new one and still the same issue.

I’m wondering if it isn’t fuel pump or fuel filter related.

Did you also replace the MAP sensor? Also, you said the check engine light came on. What was the code? Mine was setting p0101 when pulling grades.

init6

Near Fredericksburg, VA

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Posted: 07/30/21 06:49am Link  |  Quote  |  Print  |  Notify Moderator

wnjj wrote:

init6 wrote:

Just an update…. Have tried a new tank of gas. Ran all the old out first. Replaced the air filter and vacuumed out some deteriorated foam in there with a shop van. Replaced the mass airflow sensor with a new one and still the same issue.

I’m wondering if it isn’t fuel pump or fuel filter related.

Did you also replace the MAP sensor? Also, you said the check engine light came on. What was the code? Mine was setting p0101 when pulling grades.



I don’t have a code reader but plan on getting one to see what code it is throwing. Not sure where the map sensor is.

wnjj

Cornelius, Oregon

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Posted: 07/30/21 10:55am Link  |  Quote  |  Print  |  Notify Moderator

init6 wrote:

wnjj wrote:

init6 wrote:

Just an update…. Have tried a new tank of gas. Ran all the old out first. Replaced the air filter and vacuumed out some deteriorated foam in there with a shop van. Replaced the mass airflow sensor with a new one and still the same issue.

I’m wondering if it isn’t fuel pump or fuel filter related.

Did you also replace the MAP sensor? Also, you said the check engine light came on. What was the code? Mine was setting p0101 when pulling grades.



I don’t have a code reader but plan on getting one to see what code it is throwing. Not sure where the map sensor is.

You can stop by most auto parts or oil change places and they’ll check for free.

The map sensor sits on top of the engine under the big plastic cover. It is held in by one bolt with a washer that hangs over the sensor. Its really easy to change. I did both at the time because the MAF test uses the MAP to cross check.

Look here for a picture of it.

init6

Near Fredericksburg, VA

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Posted: 07/31/21 05:31am Link  |  Quote  |  Print  |  Notify Moderator

wnjj wrote:

init6 wrote:

wnjj wrote:

init6 wrote:

Just an update…. Have tried a new tank of gas. Ran all the old out first. Replaced the air filter and vacuumed out some deteriorated foam in there with a shop van. Replaced the mass airflow sensor with a new one and still the same issue.

I’m wondering if it isn’t fuel pump or fuel filter related.

Did you also replace the MAP sensor? Also, you said the check engine light came on. What was the code? Mine was setting p0101 when pulling grades.



I don’t have a code reader but plan on getting one to see what code it is throwing. Not sure where the map sensor is.

You can stop by most auto parts or oil change places and they’ll check for free.

The map sensor sits on top of the engine under the big plastic cover. It is held in by one bolt with a washer that hangs over the sensor. Its really easy to change. I did both at the time because the MAF test uses the MAP to cross check.

Look here for a picture of it.


Ah cool. Thanks for the info. Ordering a cheap code reader off Amazon since I probably need one anyway.

Cheers

wnjj

Cornelius, Oregon

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Posted: 08/19/21 12:44am Link  |  Quote  |  Print  |  Notify Moderator

Did you ever get this sorted out?

Edit: Never mind, I just saw your other post about your RV being miles away.

init6

Near Fredericksburg, VA

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Posted: 09/07/21 07:15pm Link  |  Quote  |  Print  |  Notify Moderator

wnjj wrote:

Did you ever get this sorted out?

Edit: Never mind, I just saw your other post about your RV being miles away.


Well, I was able to get someone with a Code reader to go over and check it for me. It was creating 2 codes - The first was P0327 and the second was P0332. According to what I have looked up on them, one is Knock Sensor 2, circuit low bank 2

The other code was - Knock sensor 1, circuit low bank 1

I'm not sure if these are the result of a back fire when I put the gas pedal to the floor trying to go up a hill because it already had no power and no check engine light or if this was the problem already before the check engine light eventually did come on.

I'm still suspecting a fuel filter which is nearly impossible to find with an adapter kit to take it from 3 ports down to just 2. I have tried to order from numerous places and they all seemed to be back ordered. I won't be back at the RV until around Oct at the earliest. If not then, December will be my next attempt.

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