misfire

[nerraw117]

I got a stumble at idle and also under load a bad misfire on a tbi 350. besides plugs and wires what could I first start checking? Cant view codes because when i put in my autometers I could not get my cel to work.

 

[toomany]

Cap, rotor, fuel filter, fuel pump, EGR would be some of the things I'd check first. Can you still scan it? If so I might do that before throwing sensors at it.

 

[nerraw117]

I dont have a obd 1 scanner. I will have to look to see if i can find one. and I have no egr.

 

[chulisohombre]

most auto parts stores will scan it for free.that would be my first step also.even if there is no check engine light on.

 

[nerraw117]

around here they only check it if it is obd2. they will not do obd1

 

[bp71k5]

why not just check them with a paperclip and the check engine light?

 

[USSkoval]

around here they only check it if it is obd2. they will not do obd1

Any half-way decent local garage will be able to scan it. New scanners will work on the old stuff too, as long as the operator isn't too lazy to change a connector and plug a power cord into the cig lighter (or clip to battery terminal).

 

[chulisohombre]

i got to national auto parts.they have both of the scanners,and alot of other tools you can borow for up to 2 days with a small deposit.

 

[nerraw117]

well the miss is at idle sometimes and only below 1500 rpm. above that it is fine.