Breaking up when I give it gas

THOMAS BENNETT

MEMBER
2003 FORD CROWN VICTORIA
4.6L
V8
2WD
AUTOMATIC
235,000 MILES

When I first started I brought it to my mechanic. He wasn’t able to come up with a code to see what’s going on. So he change the plugs and change the gas filter. It seem to be working for about two weeks. Then it started up again and it’s worse. I just moved to Georgia couple days ago and my nephew that works at the station says he can’t get a code either. So my mechanic in Jersey said to try putting in a IAC motor in it. So we’re going to try putting that in tomorrow and I hope it works. Any help would be really appreciated.
Thanks,
Tom

3 Replies

KASEKENNY

MECHANIC
18,907 POSTS

So when you are accelerating the vehicle is hesitating? This does sound like a fuel issue but if it got better after the filter was changed you may have fuel contamination which is clogging the filter. So we need to start with checking the fuel pressure to find out if it is restricted.

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

https://www.2carpros.com/articles/engine-hesitates

Let's run through this material and let me know what you find. Once we find out if the pressure is correct then we can go from there. Thanks

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Thursday, April 1st, 2021 AT 10:49 AM

THOMAS BENNETT

MEMBER
2 POSTS

I found out it was a cracked coil and it was arcing.
Thank you for your input !

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Friday, April 2nd, 2021 AT 10:13 AM

KASEKENNY

MECHANIC
18,907 POSTS

Sounds great. Thanks for coming back and updating us. Clearly when fuel checked out that was the next place we were going so I am so glad you jumped to it and found it. That info will surely help others. Thanks again for using 2CarPros and please come back in the future.

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Saturday, April 3rd, 2021 AT 10:04 AM