Why is my injectors spraying fuel even if I'm not turning over the engine

Asked by Nov 26, 2015 at 07:49 AM about the 1990 Chevrolet S-10 Tahoe Standard Cab SB

Question type: Maintenance & Repair

4 Answers

?

223,315

All modern fuel systems work that way. Because as soon as you turn the key to the 'on' position, the fuel pump is activated and the fuel system pressurizes so there will be enough fuel for you to start the car when you turn the key to crank the car over.

140

they should not be spraying with the engine not cranking, we control the the injectors with a ground inside the ecm (engine control module) the injectors always have power, a simple test would be to disconnect the ecm jump the fuel pump on and if they continue to spray the control wire is shorted to ground or the injector are stuck open, if it doesnt spray the ecm is no good

86,945

If they are spraying all the time with the key then the most common is a shorted injector driver inside the ECM, the next problem is the injector driver wire is shorted to ground. HTH

Your Answer

Add photo

Related Questions

S-10

Looking for a Used S-10 in your area?

CarGurus has 1,657 nationwide S-10 listings starting at $2,450.

ZIP:

Search Chevrolet S-10 Questions

Chevrolet S-10 Experts

#1 Andrew Olsen
Andrew Olsen
Reputation 2,190
#2 Trebor66
Trebor66
Reputation 940
#3 John Saffrahn
John Saffrahn
Reputation 920
View All

Related Models For Sale

Used Ford Ranger
203 Great Deals out of 6,719 listings starting at $1,450
Used GMC Sonoma
13 Great Deals out of 521 listings starting at $1,100
Used Ford F-150
2,690 Great Deals out of 212,354 listings starting at $1,000
Used Dodge Dakota
122 Great Deals out of 4,297 listings starting at $1,495
Used Chevrolet Blazer
1,343 listings starting at $1,995
Used GMC Sierra 1500
939 Great Deals out of 62,274 listings starting at $1,395
Used Chevrolet C/K 1500
1,049 listings starting at $2,000
Used Chevrolet Camaro
282 Great Deals out of 38,299 listings starting at $1,250

Used Cars For Sale

2004 Chevrolet S-10 For Sale
53 listings starting at $3,995
2003 Chevrolet S-10 For Sale
3 Great Deals out of 390 listings starting at $2,995
2002 Chevrolet S-10 For Sale
5 Great Deals out of 268 listings starting at $2,450