Engine stop will not start

Asked by Dec 09, 2014 at 03:03 PM about the 1991 Mitsubishi 3000GT 2 Dr STD Hatchback

Question type: Maintenance & Repair

91 3000gt quad cam non-turbo auto.Driving home engine cuts out, all lights still on. cranks no start. Cam belt ok, timing marks all line up. all coils sparking,fuel pump checked ok, new fuel filter fitted, ECU replaced, all fuses checked. both relays on either side of tunnel appear to be ok. compression low but not low enough to prevent starting. Used a multimeter to do a manual diagnostic check and the needle just waved side to side on the gauge so no error codes indicated.

6 Answers


Crank Sensor could be bad

True, but would that cause the engine to suddenly die when driving. I had just kicked it down to climb a small hill, over the hill it changed up then engine died.Go figure..


It could..

I think the problem is much deeper than that. I wish it were that simple.Still looking for answers.

If the crank sensor died then I wouldn't still be getting any spark, right? It's a 91 DOHC model and the crank & cam sensors are all together in the one unit. I just get the feeling we are missing something. Everything has been either checked replaced and still not starting. For the engine to suddenly die while driving is still a mystery. It didn't just splutter and stop, it just die All the lights still on etc It cranks over ok but nothing happens. It's going to the garage shortly to be put on a diagnostic machine which we hope will solve the mystery. Fingers crossed.


Compression is low? How low? Yours should be 150 psi to 200 psi. You removed the upper intake to check the compression on the back head? Sure sounds like your timing may have jumped. You say your timing marks all line up. So you removed the whole drivers side of engine dust covers, belts, motor mounts, alternator, power steering pump, harmonic balancer, ect to properly inspect the timing marks?

Your Answer

Add photo

Related Questions


Looking for a Used 3000GT in your area?

CarGurus has 86 nationwide 3000GT listings starting at $2,995.


Search Mitsubishi 3000GT Questions

Mitsubishi 3000GT Experts

#1 dandyoun
Reputation 2,460
#2 Daniel Foster
Daniel Foster
Reputation 890
#3 T_S_T
Reputation 260
View All

Related Models For Sale

Used Mitsubishi Eclipse
24 Great Deals out of 1,521 listings starting at $2,695
Used Nissan 300ZX
160 listings
Used Mitsubishi Lancer Evolution
23 Great Deals out of 647 listings starting at $15,250
Used Ford Mustang
398 Great Deals out of 44,403 listings starting at $1,000
Used Dodge Stealth
45 listings
Used Chevrolet Camaro
308 Great Deals out of 38,867 listings starting at $1,250
Used Toyota Supra
47 listings
Used Mazda RX-7
55 listings
Used Chevrolet Corvette
201 Great Deals out of 20,888 listings starting at $4,993
Used Nissan 240SX
14 listings