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ebodycab
07-07-2006, 11:31 PM
problem is a very slow 94SC 5spd...sounds like a misfire..changed new plugs and wires..didn't help..what could be the problem..car has 90K miles..thanks

Kevin Varnes
07-08-2006, 09:30 AM
Have you scanned for codes to see if anything is in the computer?

Sweet90SC
07-08-2006, 12:02 PM
what do mean by slow?...is the car bucking or just mssing or what? is your upshift light comming on? help us out with a bit more info.....

ebodycab
07-08-2006, 06:08 PM
what do mean by slow?...is the car bucking or just mssing or what? is your upshift light comming on? help us out with a bit more info.....
no power compared to my 89SC 5spd...difference is like day and night..no bucking,just feels like a misfire,has good boost but it is slow...this 94SC feels like a LX model...no upshift light..I don't have a code reader,maybe I need to buy one,what is the best model to get? thanks

ThunderDave
07-08-2006, 06:24 PM
I have one made by Actron that works good. Bought it at Advance. Maybe the cats are clogged, that can kill power quickly. Best to get a scanner and go from there.

92_coupe
07-08-2006, 06:41 PM
sounds like plugged cats
i had a ford van that lost power it got so bad that top speed was 40 mph, took it to a muffler shop and the guy drove it around the block and said you got other troubles not the cats. i said just change the damn cats and ill deal with other troubles ....when i left the shop i was burning rubber out of the driveway !
oil from bad valve guides, coolant from blown headgaskets, or lead additives in the fuel really mess up cats.

ThunderDave
07-08-2006, 07:04 PM
A bad O2 sensor can send a bad signal to the eec (and my CEL didn't come on either) and the eec will try to balance the fuel and can overload one side of the motor and clog the cats. Happened to me. :( I checked over every possible thing on that car till I had run out of ideas. The right side O2 was bad and left side cat was clogged. Cut em and gutted em and it ran fine after that.

Jogi
07-09-2006, 08:06 AM
How much does your vacuum gauge read at idle?

ebodycab
07-10-2006, 12:27 AM
How much does your vacuum gauge read at idle?
it stays exactly at 20 idling

Jogi
07-10-2006, 04:35 AM
it stays exactly at 20 idling

Then balancer should be ok as broken one usually retards timing -> vacuum goes down.