1997 Ford Aerostar Ignition and Starter Relay Guide
Troubleshoot no-start problems and understand the critical ignition switch recall relay for your Aerostar.
- A 'no-crank' issue is the most common symptom of a bad starter or ignition relay.
- Check if your van was serviced for the critical ignition switch recall (NHTSA 99V029000), as this adds a relay to the system.
- Replacement is extremely easy for a DIYer and requires no special tools.
- Standard Ignition is the more reliable aftermarket brand choice over URO Parts for this electronic component.
Understanding Your Aerostar's Ignition Relays
If you're looking for an 'Ignition Control Relay' for your 1997 Aerostar, you're likely dealing with one of two issues: a no-start condition or the effects of a major safety recall. Unlike some vehicles, the Aerostar doesn't have a single, easily identified part with this name. Instead, you'll encounter multi-purpose relays that handle various jobs, including starting the engine. A bad relay can leave you stranded, but it's usually an easy and inexpensive fix.
Important: Ignition Switch Recall 99V029000
A widespread recall was issued for 1992-1997 Ford Aerostars due to a faulty ignition switch that could overheat and potentially cause a fire. The official Ford fix was to install a jumper harness that included a new relay. This relay rerouted the high electrical load away from the switch itself. If your van had this recall service performed, the relay you are looking for might be this dealer-installed part. Check the wiring around your steering column and fuse box for any non-factory-looking harnesses.
Symptoms of a Failing Ignition Relay
When an ignition or starter relay begins to fail, the signs are usually clear. Look out for these common problems:
- No Crank, No Start: You turn the key and nothing happens, or you just hear a single click. The dashboard lights may turn on, but the engine doesn't try to turn over.
- Intermittent Starting: The van starts fine sometimes, but refuses to crank at other times. This can be caused by corrosion or wear inside the relay.
- Engine Stalls Suddenly: If the relay shorts out while you are driving, it can cut power to essential systems, causing the engine to shut off immediately.
- Dead Battery: A relay can get stuck in the 'on' position, keeping a system powered even after you've turned the van off. This will drain the battery overnight.
Choosing the Right Aftermarket Relay
For a simple part like a relay, quality still matters. A cheap, poorly made relay can fail quickly or cause more electrical problems. Based on brand reputation, here is how the available options stack up.
Pro Tip: Given the low cost, consider buying two relays. You can use one to fix the problem and keep a spare in your glove box for peace of mind. It's one of the easiest roadside fixes you can perform.
Brand Tiers
- Tier 1: Standard Ignition (SMP): Standard is a well-respected aftermarket brand known for producing reliable electronic parts that often meet or exceed OEM quality. For a critical component that can leave you stranded, this is the recommended choice.
- Tier 3: URO Parts: URO Parts is a budget brand. While some of their newer components have shown improvement, the brand has a long history in owner forums of poor quality control, especially for electrical parts like relays. Users have reported URO relays failing prematurely or not fitting correctly. It is a lower-cost option, but carries a higher risk of failure.
| Part | Price Range |
|---|---|
| New Aftermarket Ignition Relay | $14.36 - $18.94 |
| Shop Labor to Diagnose & Replace | $60 - $120 |
Frequently Asked Questions (FAQ)
Where is the ignition relay located on a 1997 Aerostar?
The starter motor relay and other multi-function relays are typically found in the power distribution box (fuse box) under the hood. Check your owner's manual for a specific diagram. The relay added during the ignition switch recall may be located near the fuse box or under the dashboard near the steering column.
Can I replace the ignition relay myself?
Yes, this is one of the easiest repairs you can do. Relays are designed to be plugged in and pulled out, usually without any tools. Simply locate the correct relay, pull the old one straight out, and push the new one in firmly. It should take less than five minutes.
My van cranks but won't start. Is it the ignition relay?
If the engine is cranking (turning over), the starter relay is likely working correctly. The problem is more likely with the fuel or spark systems. On an Aerostar, a common cause for a 'crank no start' condition is the fuel pump inertia switch, which may need to be reset. Other possibilities include the fuel pump itself or the ignition control components within the PCM.
What's the difference between an ignition relay and an ignition module?
A relay is a simple electro-mechanical switch. An ignition control module is a more complex electronic component that controls spark timing. On the 1997 Aerostar, the ignition control module is not a separate, replaceable part but is built into the main computer, the Powertrain Control Module (PCM).
Technical Specifications
12 Volt, 4 or 5-pin multi-purpose relay.
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The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
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