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Runs rough until it gets to 3,000 RPMs

Tiny
929CHRIS
  • MEMBER
  • 1989 FORD PROBE
  • TURBO
  • 2WD
  • MANUAL
  • 240,000 MILES
Once the turbo kicks in it runs great other than it sounds like it is missing on all cylinders. I change the fuel pump, fuel pressure regulator, and I changed the distributor.
Wednesday, December 15th, 2021 AT 12:01 PM

4 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,700 POSTS
Hi,

A misfire can be caused by several things. Have you checked for engine vacuum leaks? Has anyone changed the air intake tube?

Do me a favor. Let's start by checking for diagnostic trouble codes. This vehicle has an OBD1 system. You can retrieve codes without a scan tool. Take a look through this link and let me know if you find codes:

https://www.2carpros.com/articles/ford-lincoln-mercury-obd1-1995-and-earlier-diagnostic-trouble-code-definition-and-retrieval

Also, let me know if the engine has 240,000 miles. If possible, record how it is running and upload it for me to hear.

I will wait for your reply.

Take care,

Joe

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Wednesday, December 15th, 2021 AT 7:15 PM
Tiny
929CHRIS
  • MEMBER
  • 7 POSTS
How do I upload an audio clip?
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Saturday, December 18th, 2021 AT 10:29 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,700 POSTS
At the bottom of where you are typing, click on the "Add Image or Video."

Let me know if you find it.

Joe
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Saturday, December 18th, 2021 AT 10:41 PM
Tiny
929CHRIS
  • MEMBER
  • 7 POSTS
  • 1989 FORD PROBE
  • 4 CYL
  • TURBO
  • 2WD
  • MANUAL
  • 240,000 MILES
It has codes 15, 16, 17.
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Sunday, December 19th, 2021 AT 11:25 AM (Merged)

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