1993 Aerostar doesn't fast idle on cold start. Idles fine after warm up. Starts with difficulty when below 32 degrees
Feb 22, 2011 at 2:50 PM
Cold Start Idle
1993 FORD AEROSTAR
JACKKUBAN
- MEMBER
- 1 POST
Advertisement
ERNEST CLARK
- ✓ASE Certified Mechanic
- 1,730 POSTS
Should idle fast at cold start. The computer does this to quickly bring the engine up to temp. It should slowly drop the idle after a minute or so.
Hard starts during cold could be bad gas (use a bottle of HEAT), or a failing fuel pressure regulator. Check it with a fuel pressure gauge. Pressure should be 39-45 psi and hold for at leas 15 minutes after you shut down engine. If it doesn't, bad FPR
Hard starts during cold could be bad gas (use a bottle of HEAT), or a failing fuel pressure regulator. Check it with a fuel pressure gauge. Pressure should be 39-45 psi and hold for at leas 15 minutes after you shut down engine. If it doesn't, bad FPR
Feb 22, 2011 at 3:06 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.