makes sure your wires are away for the manifolds too

 

Yes, wires are good rechecked them this PM. It isn't just one or two cylinders dying it's the all of them. When you nail it, it lays down completely. No power what so ever, like you hit the brakes.


Thanks for the suggestion.

Thanks, Jeff

 

Not sure of what the voltage is supposed to be at wot, but I think it would be included in the factory service manual available here in pdf format. Look in the faqs section for the download; this is the manual dodge mechanics use, and a very good one (has helped me many times).

Another method to go about it would be to go ahead and throw the tps on there, and if it solves your problem there you go. If not, put the old one back on and clean the new one so that it looks like it just came from the factory; take it back and tell them you figured out the problem was something else and never used it (its not exactly lying).

Its likely that if the tps isnt to blame then you probably have the common blown plenum issue; which clogged your cat. If this is the case, repair it asap. It will lead to other, more serious issues which will have a far greater impact on your wallet

 

Ha gl on the caliber getting him around. I'm on my second one and it's already got two new engines before 30k miles.

Any way. Does his truck use oil?

 

have you check to make sure all your positveand ground wires on the baterry are tight . to both the termanal and the the wires going to the piece that connectos to the terminal

 

new cap and rotor may be called for too..

 

Thank you so much, just what I was looking for. I went through the FAQ's first but didn't know what I was looking for.

My TPS is out of range by at least a volt. Gonna be cold next few days so I won't get back on it for a few. I will post back my results, you can bank on that!

Truly appreciate the help!

Thanks, Jeff

 

No prob man, just do what I can.

Good Luck

My money is on clogged cat or tps

Cap and rotor would affect the engine at all times. Since his problem is at a specific point in the throttle, it is unlikely to be spark related. Not a bad idea though.

 

Gotta be a clogged cat or fuel filter or bad pump. I know fuel pressure was at 52 lbs, but that's in the yard with no load.

 

Couple different ways... Backprobe the connector with a VOM, and watch voltage, should be less than 1 at idle, and over 3 at WOT. (seems like a rather narrow range....) voltage should progress steadily,and not jump all over the place.

Other way would be to measure resistance across the sensor, with it unplugged. Resistance should decrease steadily with larger throttle openings. Again, if it dances around, that's bad.

An analog meter is best for these tests.

It still might be fuel pressure too..... when the engine is unloaded, it takes a lot less gas to spin it up to redline. Certainly wouldn't hurt to check it.

To test for a clogged cat, Remove the pre-cat O2 sensor, and take it for a ride. (yes, it will be a bit loud, and will set an O2 sensor code.)