86 325 won't rev past 1500rpm

[littlejim]

driving home it just lost power (but still idling ok) and when I held the throttle all the way down it would take a couple of seconds then it would rev up to 1500 then drop down to idle, then a couple of seconds later it would rev again and drop back.

so I drove it home holding it at 1200 rpm and when about a mile from my house it started to rev past 1500.

I haven't taken it out on the road since but left it idling a few times and it hasn't done it since (it has a slight miss fire when reved hard but this might not be part of the same problem)

[Simon13]

How is your throttle cable? and how is the throttle body itself?

[Nelly]

Rotor arm + Dizzy cap check

[littlejim]

the cable looks ok and the throttle is opening fully.

[fugazi33]

Fuel problem? Fuel pump on the way out/pressure regulator pipe split or something?

[Andyboy]

Could be the speed sensor on the bellhousing. When this fails the engine will idle fine but just won't rev.

[Shinobi1]

Have you checked the afm slide is not stuck ? might be worth a look .

cheers paul.

[littlejim]

Its been running ok for the last two days.
I haven't done anything to it.