The Central Hub for DSM Community and Information

For 1990-1999 Mitsubishi Eclipse, Eagle Talon, Plymouth Laser, and Galant VR-4 Owners. This is where the DSM platform history is documented and archived. Log in to help us in our mission, and to remove most ads from the browsing experience.

My car shuts down around 3500 rpm's? whats wrong?

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

ShadyTalon

15+ Year Contributor
99
0
Feb 15, 2004
Newtown, Pennsylvania
Il start off with my mod list
1997 Eclipse GSX
intake, 1st gen bov, dejon UICP, turbo xs MBC.
Im currently venting to the atmosphere.


When i boost WOT, its ok, everything is cool. But when i boost from 0-5 or 6 psi and steadily hold it there, my car will boost, then shut down kinda, but still boost, it feels as if the boost just goes away, possibly a leak in the bov? im not sure, but it feels like a boost cut (if there is such a thing).
EXAMPLE:
Im in first, around 2000 rpms, rolling, no clutch engaged. i go, say almost 1/2 throttle, so i hit around 5 psi, the car will boost ok, until about 3500-3800 rpm's, where it bogs down, but the turbo will still spool as if nothing happened, i dont hear the bov. It feels as if the rpm's are dropping, but they arnt, and it feels as if the turbo isnt producing boost, but i still hear it, and my gauge still reads the same psi. So all in all, it feels likes im letting off the gas, when in reality, im not.

(ps, this happens in every gear, i just used 1st as a example).

Can one of you DSM junkies help me?
 
First of all, venting is a possibility. If your bov is leaking at all then that is a boost leak and will cause the car to do that. I bet that you do have a boost leak somewhere. Check for leaks using a boost leak tester and fix any that you find.
 
I felt a similiar feeling in my T-25. I changed the plugs(again) and changed to a new a set of NGK SparkPlug Wires and it went away. It feels like timing is being pulled. Mine was lack of spark. Hope it helps.
 
aero_sallee said:
First of all, venting is a possibility. If your bov is leaking at all then that is a boost leak and will cause the car to do that. I bet that you do have a boost leak somewhere. Check for leaks using a boost leak tester and fix any that you find.
Consider venting without a MAFT a boost leak.

Spark plugs need to be NGX bpr6es gapped at .028
Fact, not opinion.

It's one of these two problems, or a combination of both.




Why do you people insist on running open atmosphere? I don't understand.....
You need to recirculate your BOV.
 
Add Value - Be Respectful - No Trolling - No Misinformation - Participate Often!
Support Vendors who Support the DSM Community

Build Thread Updates

Latest Classifieds

Back
Top