Home
What's new
Latest activity
Authors
Store
Latest reviews
Search products
Forums
New posts
Search forums
What's new
New posts
New listings
New products
New profile posts
Latest activity
Members
Current visitors
New profile posts
Search profile posts
Log in
Register
Cart
Cart
Loading…
What's new
Search
Search
Search titles only
By:
New posts
Search forums
Search titles only
By:
Menu
Log in
Register
Navigation
Install the app
Install
More options
Change style
Contact us
Close Menu
Forums
Cobra Forums
SN95 Cobras
98 Cobra starts but dies immediately - Help needed
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="slow98cobra" data-source="post: 16887540" data-attributes="member: 60276"><p>I’m glad to hear there is some progress!</p><p></p><p>Unplugging the IAC is a good way to test its functionality. I’m no expert but I believe when it is unplugged, it is completely closed. It’s sounds like you may have a little issue with it and it may be worth either trying to clean it or replace. </p><p></p><p>I would ask your tuner what fuel pressure they are expecting with the tune and try to dial in from there with the regulator. I’m not sure what they are expecting with vac attached/unattached. I would also check your FPDC reading on your hand held if available. It has been quite awhile since I tinkered with the fuel system on the 98 so can’t recall if they have a fuel rail pressure reference sensor and if that is failing or has a misreading between the pressure it is expecting and what the sensor is telling it, it cranks up the PSI. Don’t think so because that is mainly returnless but I believe the 98 fuel system was a little different than standard return. </p><p></p><p>On the MAF, I would put back on the one before you did the build but I would go buy some MAF sensor cleaner. It may be that it some how got dirty or has some debris in it. It almost sounds like the elements are not heating up so it thinks there is a ton of air crossing the sensors tricking the computer to give it more fuel. </p><p></p><p>Just a couple thoughts. Let us know how it works out!</p></blockquote><p></p>
[QUOTE="slow98cobra, post: 16887540, member: 60276"] I’m glad to hear there is some progress! Unplugging the IAC is a good way to test its functionality. I’m no expert but I believe when it is unplugged, it is completely closed. It’s sounds like you may have a little issue with it and it may be worth either trying to clean it or replace. I would ask your tuner what fuel pressure they are expecting with the tune and try to dial in from there with the regulator. I’m not sure what they are expecting with vac attached/unattached. I would also check your FPDC reading on your hand held if available. It has been quite awhile since I tinkered with the fuel system on the 98 so can’t recall if they have a fuel rail pressure reference sensor and if that is failing or has a misreading between the pressure it is expecting and what the sensor is telling it, it cranks up the PSI. Don’t think so because that is mainly returnless but I believe the 98 fuel system was a little different than standard return. On the MAF, I would put back on the one before you did the build but I would go buy some MAF sensor cleaner. It may be that it some how got dirty or has some debris in it. It almost sounds like the elements are not heating up so it thinks there is a ton of air crossing the sensors tricking the computer to give it more fuel. Just a couple thoughts. Let us know how it works out! [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Cobra Forums
SN95 Cobras
98 Cobra starts but dies immediately - Help needed
Top