As the title says when I try to start the car up in the morning SOMETIMES not all the time the RPMS would shoot up to 1200 or so as normal then automatically go back down to 0 causing the car to stall. The other day when the car was running it was hesitating A LOT while it was running only when the temperature of the car was cold. The car runs fine, drives fine, etc. I just have this little annoyance sometimes that I want to get taken care of. I showed it to my mechanic, he said no vacuum leaks nothing looks out of place, and he said it may be my MAF Sensor. I don't have a MAF sensor but I'm using the '97 MAF which is hooked up to a Cattman Combo Hybrid Intake with a JWT Air Filter the one with the velocity stack. This is hooked up to a '00 VI with a '00 Throttle Body. Can I use the '99-'01 MAF the ones that are sold on courtesyparts.com? Does this sound like it may be an MAF issue, how do I test my MAF to see if it is good or not? BTW, no codes at all.

 

Sounds like a clogged fuel filter. When was the last time you changed it?

 

Umm 15K miles ago.

 

I have no hard or cold starts car starts just like 3.0 did. But i dont have a clue why yours is doing that

 

Check the FPR. Friend of mine just had a similar problem... especially after sitting for a while (eg overnight). FPR wasn't holding pressure.

 

Is that a part of the fuel pump, I have a Walbro Fuel pump.

 

Ok I see the FPR per the haynes manual, but I have a '00VI with a '00VI fuel rail and injectors, and a return system fuel setup. One line to the fuel filter another running from the top of the fuel filter to the fuel rail. Which FPR do I need?

 

With the 00VI fuel rail and injectors... the FPR should be on the rear bank (ie line from tank goes to filter, then to front rail, then to back rail, then through the FPR and then return line to tank.

 

so u have the 00vi with the 3.5 conv? didnt think that could be done? How is the performance when its actually running? ANy dyno #s?

 

No dyno #s yet, running good.

Back to topic.

A friend of mine is saying it maybe my IACV. But that seems to be fine, I have 2 lines. One going to the cattman intake, one going to the IM.

 

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