Rpm going up and down sounding like it’s cammed

[Ryanb101]

I have a 17 mustang gt full bolt on e85 and if I get in my car after it’s been running and everything is warmed up when I crank it, it sounds like it’s cammed and rpm is going up and down anyone had this happen ??

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[MikeyV]

Haven't had this happen...but maybe a cam phaser went bad? Maybe the connector is loose?

Only happens when warm, eh?

 

[Cobra Jet]

I have a 17 mustang gt full bolt on e85 and if I get in my car after it’s been running and everything is warmed up when I crank it, it sounds like it’s cammed and rpm is going up and down anyone had this happen ??

Are you getting any DTC’s?

The most common to create that sensation would be failing IMRC or VCT’s.

 

[Ryanb101]

Haven't had this happen...but maybe a cam phaser went bad? Maybe the connector is loose?

Only happens when warm, eh?

Yes

Are you getting any DTC’s?

The most common to create that sensation would be failing IMRC or VCT’s.

nope

 

[Elp_jc]

Did you check with FORScan, so you can also read 'soft' DCTs that don't trigger a CEL?

 

[Ryanb101]

Did you check with FORScan, so you can also read 'soft' DCTs that don't trigger a CEL?

I didn’t

Did you check with FORScan, so you can also read 'soft' DCTs that don't trigger a CEL?

I didn’t

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