Having idle issues Need help

Jamerjoe

Jamerjoe

Member
I am having some issues with my 92 typhoon. Lets see at idle, if I rev the engine up to 1500 or 1000 rpms then let off gas right away the engine comes very close to stalling. Also some times the truck will idle really smooth and most of the time it will idle ruff with puff noise coming out of the tail pipe. One other thing if I push on the gas slow it seems to have a lot more power as if I mash on the gas. Any ideas will be great.

I have a walbro 255 fuel pump that I want to install. Can I do that using the stock rpr??

Thanks

Joe
 
S

Sy769

Donating Member
The trucks do idle rough depending on your definition of rough. The particular calibration you are using can really affect the idle.

Yes you can use the stock FPR with that pump. However I'd suggest getting an adjustable if you plan to do any mods or try to tune it at all.
 
InvisiBill

InvisiBill

Active member
The Walbro will ensure that you're always supplying as much fuel as the FPR is allowing into the engine. You will need an AFPR if you want to tweak your truck, but I wouldn't not put the Walbro in just because you don't have an AFPR yet. (I have a Walbro with Racetronix hotwire harness, with the stock FPR.)

Assuming your stock pump is sufficient (the stock pump is very close, so it may not be sufficient anymore) and your FPR is working properly, the Walbro will not actually improve anything alone. If your stock pump is putting out less than the FPR wants though, the Walbro will fix that. At worst, the Walbro will give you the same results. At best, it will fix problems of a marginal/dying stocker.
 
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