Slight Missfire At Idle And Up To Approx 2000 Rpm.

[Guest Phil Waller]

Hello all,

 

I have tried to do a search on the site for people with issues with missfires at idle and low revs.

 

Mine is a slight occasional missfire at idle and from idle to about 2000 rpm.

 

Everything on my vehicle is in good working order (plugs leads etc)..

 

I am concious that the throttle body could need cleaning as it was filthy when I looked..

 

Is there anything else I need to check?

 

Thanks

 

Phil

[Ivor_E_Tower]

I am concious that the throttle body could need cleaning as it was filthy when I looked..

Definitely clean it up before it causes trouble, even if it may not be directly responsible for your present rough running.

[Guest MATT]

I had a 2.3 gal before this one, and it had missfires, came down to poor sparks :unsure:

[Guest vr6galaxy]

Check the coil packs, they are a known weak point!

[seatkid]

Is this a Scorpio? Is it worth fixing? :unsure:

 

I keep repeating .....95% of rough running problems are ignition related. Unless the ignition components are new, it is virtually impossible to say "plugs/leads etc" are OK. It is usually impossible to see the early breakdown (more leakage than breakdown) of these components. HT Leads particularly....

 

Its theyre old (5+ years), in this order treat yourself to

 

1. New distributor/rotor arm (if it has one)

2. New leads

3. New plugs

 

Thoroughly examine and clean coil(s)/coilpack.