90 rx7 tach stops working engine light comes on at times it dies everything goes back to normal on restart WTF!!!!!

Asked by May 26, 2012 at 03:14 PM about the 1990 Mazda RX-7 GTU

Question type: Maintenance & Repair

really strange car works perfectly but tach quits and a/c has no power car sometimes dies but will restart then tach and everything is normal for a while then off again this has me totally confused help please

1 Answer

5,865

Check the ground connections and the connectors in your electrics, this is normally the culprit in older automotive electrical systems, either thar or chafing (but then you'd have blown fuses to go with it). Seeing as the tach signal is taken off the trailing coil, that might be the best place to start your investigations. As for your A/C it might be the acceleration controlled A/C cut-out system acting up. Get a copy of the FSM and preferably the wiring diagram before you start though. FSM can be found here: http://www.rotaryheads.com/PDF/2nd_gen/

Your Answer:

Mazda RX-7 Experts

  • #1
    Lars Cats
    Reputation
    410
  • #2
    tennisshoes
    Reputation
    190
  • #3
    Tom Demyan
    Reputation
    100
View All

Related Models For Sale

Used Toyota Supra
55 listings
Used Mazda MX-5 Miata
52 Great Deals out of 4,637 listings starting at $1,900
Used Ford Mustang
260 Great Deals out of 37,873 listings starting at $1,350
Used Nissan Skyline
3 listings
Used Nissan 240SX
12 listings
Used BMW M3
22 Great Deals out of 1,494 listings starting at $5,995
Used Chevrolet Corvette
86 Great Deals out of 15,056 listings starting at $3,620
Used Chevrolet Camaro
233 Great Deals out of 27,354 listings starting at $2,077

Used Cars For Sale

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.