My TBI 1991 305 does not fire when cranking. Until the battery starts going dead. Which is then turning over at a slow revaluation. But it's still yellow (no fire). Is it my pick up coil? Or timing?

Asked by Torkerjr Feb 28, 2015 at 07:06 AM about the 1991 Chevrolet C/K 1500

Question type: Maintenance & Repair

Swap ECM/PCM COMPUTER.
Sense I'm going to a 305. From a
350. Or just wire a knock sensor into
the original ECM.

2 Answers

103,735

If you have your original 350 ECM, you will have to get a compatible ECM for your 305.

30

Same ecms a 305 will run off a 350 ecms and vise versa. First off while cranking is the injectors spraying fuel. If not then pull the cap off the distributor and remove the little sensor that's held with 2 bolts. Then get a new one problem solved

Your Answer:

CarGurus Experts

  • #1
    Andrew Olsen
    Reputation
    15,950
  • #2
    Rowefast
    Reputation
    9,670
  • #3
    John Saffrahn
    Reputation
    6,480
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used GMC Sierra 1500
148 Great Deals out of 7,258 listings starting at $3,950
Used Ford F-150
321 Great Deals out of 14,968 listings starting at $1,712
Used Chevrolet S-10
3 listings starting at $12,975
Used Chevrolet Corvette
29 Great Deals out of 1,060 listings starting at $15,871
Used Chevrolet Camaro
16 Great Deals out of 307 listings starting at $10,500

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. Content will be removed if CarGurus becomes aware that it violates our policies.