Intermittent no power below 3000rpm
Having some problems with how the Miata is running and looking for thoughts on where to look for the problem...
Quick background on the car: 97 Miata WRX turbo 550 injectors MSPNP This problem is intermittent, it comes and goes with no apparent pattern or trigger. Sometimes the car runs fine all day and other times, all of a sudden it loses most of its power. When the car is running well, the engine revs freely when you press the gas. Pulling away from a stop there is good power. When the car is running poorly, the engine is sluggish to rev below about 3000rpm when you press the gas. Pulling away from a stop, there is no power. The car can barely accelerate itself and it will be making 5psi or so of boost to do this. When things are good, at idle: Idle vac: 20inhg Engine RPM: 1050rpm Wideband reading: 13:1 When not running well at idle: Idle vac: 8-10inhg Engine RPM: 850rpm Wideband reading: 10.5:1 Any thoughts on where to look for a problem or things to test?? thanks |
Check for leaks.
The change in idle vac suggests for this. Perhaps a connector or hose comes loose or wiggles itself out under the right condition. Check your hoses and clamps. |
datalogs.
|
Originally Posted by bogly
(Post 635302)
Check for leaks.
The change in idle vac suggests for this. Perhaps a connector or hose comes loose or wiggles itself out under the right condition. Check your hoses and clamps. I took a data log the other day, will upload it tomorrow. |
Originally Posted by Braineack
(Post 635323)
datalogs.
|
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