93 MIATAS RPM GOES UP AND DOWN;BUT NOT ALL THE TIME

Asked by Feb 23, 2013 at 05:27 PM about the 1993 Mazda MX-5 Miata Base

Question type: Maintenance & Repair

3 Answers

any trouble codes? the Check engine light come on? you did not say it was a cold engine...but not all the time means what? does it when it's warmed up? want to know more about your particular problem, sounds like an old manual distributor, but I wouldn't think they still used these on the '93 models. A centrifugal avance mechanism in the distributor will give you somethin' like this-

6,495

Ah. My 5.0 does this sometimes... Usually only when its hot and in park. Check engine light blinks sometimes en the highway... I havent even read the codes (Lazy me) but I just assumed it was probably something with the EGR valve and I was dreading taking off the exhaust tube bolts >_< Bob brings up a great point though... An old distributor will definitely have these symptoms.

1 out of 1 people think this is helpful.
170

Is your A/C on? If so your compressor may be kicking on and off...

Your Answer

Add photo

Related Questions

MX-5 Miata

Looking for a Used MX-5 Miata in your area?

CarGurus has 4,515 nationwide MX-5 Miata listings starting at $1,995.

ZIP:

Search Mazda MX-5 Miata Questions

Mazda MX-5 Miata Experts

#1 Michael Kane
Michael Kane
Reputation 1,950
#2 Tom Demyan
Tom Demyan
Reputation 1,140
#3 Racer_X
Racer_X
Reputation 390
View All

Related Models For Sale

Used Ford Mustang
389 Great Deals out of 47,196 listings starting at $1,500
Used Chevrolet Corvette
112 Great Deals out of 20,363 listings starting at $3,495
Used BMW 3 Series
1,023 Great Deals out of 33,910 listings starting at $1,000
Used Chevrolet Camaro
163 Great Deals out of 33,383 listings starting at $1,995
Used Honda Civic
511 Great Deals out of 88,521 listings starting at $1,499

Used Cars For Sale

2017 Mazda MX-5 Miata For Sale
1,535 listings starting at $24,549
2016 Mazda MX-5 Miata For Sale
1,561 listings starting at $19,999
2015 Mazda MX-5 Miata For Sale
3 Great Deals out of 123 listings starting at $17,450
2014 Mazda MX-5 Miata For Sale
3 Great Deals out of 113 listings starting at $13,900
2013 Mazda MX-5 Miata For Sale
126 listings starting at $10,995