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-   -   weird engine/hesitation/bogging down problem (https://www.rx7club.com/3rd-generation-specific-1993-2002-16/weird-engine-hesitation-bogging-down-problem-689188/)

Turbo95Max Sep 17, 2007 01:00 PM

weird engine/hesitation/bogging down problem
 
Recently my FD has been acting up on me. When I put some load on the car it backfires and bogs down alot. I also noticed that my Power FC commander resets and shows the intro stuff(screen you see when you first turn key on) It idles relatively normal and if i drive it with very light throttle itll be ok. Only when I put load on the car does it run like crap.

I havent had time to look at it yet but was hoping to get some ideas. Thanks

rxguru Sep 17, 2007 01:13 PM

Oui! Where to start! perhaps I would start with the vaccuum line that goes to the MAP sensor. Or maybe you blew a coupler....either of those would make it run like crap under load but fine until then....

Turbo95Max Sep 17, 2007 01:17 PM

It seems to me that the ignition is cutting out, and then coming back on causing the backfire. Ill check vaccum lines and couplers but it doesnt seem like its that type of problem. Thanks

Sprockett Sep 17, 2007 01:53 PM

With the PFC resetting itself, I could definitely see an electrical problem somewhere. Maybe a loose/bad ground somewhere.

Turbo95Max Sep 17, 2007 08:34 PM

so I went to start my car just now and it doesnt start anymore. I dunno if thats good news or bad news. I guess itll be easier to diagnose then an intermittent problem.... all my cars are broken rite now.....crap

Turbo95Max Sep 19, 2007 12:39 PM

Car is cranking but doesnt start. No spark at both rotors. Igniter is good, crank sensors are good, coils are good, main relay is good, ECU is good. What else could cause no spark? Crank sensor wires?

Copeland Sep 19, 2007 05:10 PM

Check your fuel pump (speed) relay in the front relay box under the stock air intake. I had a very similar problem fixed by the replacement of it.


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