Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSFORD1990RANGER 4WD L4-140 2.3L SOHCREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSTECHNICAL SERVICE BULLETINSCUSTOMER INTERESTENGINE - HARD COLD STARTS/HESITATION/STALLS ON START-UPLABOR STANDARDS OPERATIONS
1990 Ford Ranger 4WD L4-140 2.3L SOHC
Labor Standards Operations
1990 Ford Ranger 4WD L4-140 2.3L SOHCSECTION Labor Standards Operations
The labor operations shown in the following Operation/Description/Time columns are identified by procedure number and vehicle line. Specific engines for various vehicles are identified in the sludge cleaning procedure application charts. The throttle body cleaning operations with combinations and the air by-pass valve cleaning combinations will appear in future Labor Manuals under the following operation numbers.
^ 9926 B - Throttle body and idle air by-pass valve cleaning
^ 9926 B2 - Adjust idle speed
^ 9715 A - Air by-pass valve cleaning only
^ 9715 A1 - Adjust idle speed
PART NUMBER PART NAME CLASS
F2PZ-9F939-A Idle Air By-pass Service Kit B
D9AZ-19579-AA Carburstor Tune-Up Cleaner BG
OTHER APPLICABLE ARTICLES: 89-13-8
SUPERSEDES: 88-24-5, 88-24-6, 89-16-5, 91-10-9, 91-7-4
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.