: Will idle, but will not hit 2000rpms!!!


Run dog
07-14-2007, 08:03 PM
Here we go again:shaking:I need some advice. I replaced the plenum and alternator. The 3.9 RRC will idle fine. However, at around 2000rpms in neutral it completely cuts out. Does anyone know where to start? Thanks

lwg
07-14-2007, 10:40 PM
Here we go again:shaking:I need some advice. I replaced the plenum and alternator. The 3.9 RRC will idle fine. However, at around 2000rpms in neutral it completely cuts out. Does anyone know where to start? Thanks

Check the fuel pressure. Unfortunately if it's an early 1990 model it won't be easy. You'll either have to disconnect the fuel line at the fuel rail and do this or back by the fuel filter.

So are you going to drag that thing out to Montrose for the National Rally?

PTSchram
07-15-2007, 10:25 AM
Let's get back to the basics (Cue the country music).

Fuel, spark, compression?

Suck, squeeze, bang, blow. Gots to have all four.

DChapman
07-15-2007, 05:56 PM
Could be sucking air at the new plenum....

Junkyddog11
07-16-2007, 06:29 PM
Could be sucking air at the new plenum....

good god for once I'll have to agree with Dan.....although I'll try hard to never do it again......:D