Where is inj. ecm or driver

10

Asked by Oct 22, 2013 at 10:33 PM about the 1979 Cadillac Eldorado

Question type: Maintenance & Repair

When the eldo I bought thats been parked for 15yrs ,starts missing,bucking,backfiring a half mi. from shop. Before I even tryed to start it I replaced the fuel tank, both fuel pumps, fuel filter. Then we started and ran in shop for probably an hr. before taking on road when started acting up. After babying back to shop I had good fuel psi and volumn,all inj.ohm'd the same, left #2 unpluged to check for noid when it started and sounded good again after plugging #2 in , took it on road again just to get stranded again. Have any ideas?  primative injection   6.0  368    Thanks

4 Answers

60,965

I'm assuming you don't have a diesel engine and the fifth character of the VIN is the letter "B"? If that is correct you have the V8 350 (5.7 Liter). The ECU (Electronic Control Unit) as they called it back in those days is usually found behind the glove box under the passenger's side dash. It will have a vacuum hose connected to it for the MAP (Manifold Absolute Pressure) sensor. That vacuum hose needs to be connected to the intake manifold. Check the EGR (Exhaust Gas Recirculation) valve for sticking. Also check the throttle position sensor for proper operation with an ohm meter. HTH. -Jim

3 out of 3 people think this is helpful.
10

Your rite it is a 5.7 and I did find the ecu. I disconnected the map hose from it to check for vac. or blockage and it started rite up reved, idled, ran rich but ran. Put hose back on while running, then it leaned out to the point of missing, bucking, stall. I'm thinking ECU Thanks Jim

1 out of 1 people think this is helpful.
60,965

You're welcome. Glad to help. Thanks for letting us know. -Jim

10

Coolant temperature sensor and intake manifold temperature sensor are likely the source of trouble. Both should show 1000 ohms give or take when cold.

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

Eldorado

Looking for a Used Eldorado in your area?

CarGurus has 423 nationwide Eldorado listings starting at $2,250.

ZIP:

Search Cadillac Eldorado Questions

Cadillac Eldorado Experts

#1 spiderblu
spiderblu
Reputation 780
#2 COMETGUY61
COMETGUY61
Reputation 290
#3 Js08016
Js08016
Reputation 280
View All

Related Models For Sale

Used Cadillac DeVille
6 Great Deals out of 1,954 listings starting at $1,750
Used Chevrolet Corvette
180 Great Deals out of 20,810 listings starting at $3,995
Used Chevrolet Camaro
282 Great Deals out of 38,308 listings starting at $1,250
Used Chevrolet Impala
795 Great Deals out of 34,381 listings starting at $799
Used Ford Mustang
362 Great Deals out of 44,353 listings starting at $1,000
Used Lincoln Continental
3,713 listings starting at $42,294
Used Chevrolet Monte Carlo
15 Great Deals out of 1,662 listings starting at $2,000
Used Buick Riviera
137 listings starting at $2,495