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SN95 Cobras
98 Cobra starts but dies immediately - Help needed
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<blockquote data-quote="5.0calypso93lx" data-source="post: 16887557" data-attributes="member: 16611"><p>Again, thanks so much for all the help!</p><p></p><p>I actually have two IAC's. An older Motorcraft piece and a new aftermarket piece. What's weird is if I plug the connector in on the motorcraft iac that's bolted to the upper intake lid the car dies immediately. If I plug the connector in on the aftermarket one while just holding it in my hand the car does nothing different and continues to run. Makes me think the Motorcraft IAC bolted on the lid is doing something.</p><p></p><p>The MAF is the stock MAF that I ran on the car last year and one the car ran fine with. I will give it a good cleaning regardless.</p><p></p><p>Tuner is expecting 40psi with the vac hose unplugged so I've now got that dialed in exactly.</p><p></p><p>The 98's do not have a rail pressure sensor. My Fore rails have the provision for it, but I actually had to buy a blockoff plate to close the hole on the rail. The difference with the fuel system on the 98 is that Ford went to the bucket style variable voltage fuel pump in the tank, but still used a true return system.</p><p></p><p>I got another good suggestion about opening up the throttle body blade screw a touch as the TB should be slightly open</p></blockquote><p></p>
[QUOTE="5.0calypso93lx, post: 16887557, member: 16611"] Again, thanks so much for all the help! I actually have two IAC's. An older Motorcraft piece and a new aftermarket piece. What's weird is if I plug the connector in on the motorcraft iac that's bolted to the upper intake lid the car dies immediately. If I plug the connector in on the aftermarket one while just holding it in my hand the car does nothing different and continues to run. Makes me think the Motorcraft IAC bolted on the lid is doing something. The MAF is the stock MAF that I ran on the car last year and one the car ran fine with. I will give it a good cleaning regardless. Tuner is expecting 40psi with the vac hose unplugged so I've now got that dialed in exactly. The 98's do not have a rail pressure sensor. My Fore rails have the provision for it, but I actually had to buy a blockoff plate to close the hole on the rail. The difference with the fuel system on the 98 is that Ford went to the bucket style variable voltage fuel pump in the tank, but still used a true return system. I got another good suggestion about opening up the throttle body blade screw a touch as the TB should be slightly open [/QUOTE]
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98 Cobra starts but dies immediately - Help needed
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