You need to have a scanner that can read the input and output sensor RPM, Before you do any repairs.

 

It has everything to do with it. An input or output speed sensor WILL put the trans into limp-in.

 

I live in a small town where we only have a couple of small time mechanic's, which of course do not have the scanner needed to do the check. The closest dealer is 40 miles away.
I either have to drive it in limp mode to the dealer, or have a wrecker haul it for me.
I was hoping to avoid that, but looks like that is what I will have to do in the end.
Thanks everyone
avery

 

1st issue, trans in limp in and no speedo (output sensor not input)]

2nd issue, when accelerating intake backfire, bogs...(can't be anything trans sensor related)

avery53: Do you have any other auto repair resources less than 40 miles away? I'd think someone with a good scanner could at least take an educated stab at your 2 main issues.

 

The strange part of this whole thing is that it ran and drove great.
I feel what ever is causing these issues are related somehow.
I did nothing but disconnect the battery, and o2 sensor, no other wires were touched.

My only option is to have it hauled the 40 miles, no one has anything but the hand held scanner in these parts.
Sometimes small town living has it's drawbacks.

Thanks
avery

 

What small little town are you in? I live in a town of less than 800 and there are 2 repair shops. Both guys have a decent scanner: Snap-on Modis at one and the other guy has a couple Snap-on's and an OTC. I think I could set you up with a old Snap-on scanner. The one shop wants to sell his Snappy scanner.

 

I just pointed out that you are dead wrong in your statement about it being related. And YES, it can be trans sensor related if he has wires touching together somewhere. But then again amateurs only focus on parts replacement.

 

I don't see why you have to say I'm dead wrong!! Not one of my possible solutions to his problems could be construed as wrong. I don't feel I'm wrong with his issue/probable cause as I answered. I don't feel saying his input sensor is even a remote possibility based on his explanation of problems (no speedo, no shift indicates an output sensor not an input sensor. even suggesting an input sensor is a premature thought without sufficient data to support that speculation given the described issues). As he said, all he did was replace a power steering pump. There isn't one wire anywhere near that part. I just replaced a pulley on my parents Town and Country. I didn't have to remove one wire, unplug on thing. The whole mystery of this guy's issue is everything was perfect before he fixed the PS pump. As Master Tech suggested a scanner would be necessarry to assess the situation. It's to bad the guy can't find any scanner any closer than 40 miles. You'd thing there has to be someone closer that fixes cars and has a good scanner and maybe a little knowledge.

 

Avery53 needs to get the van to someone with a DRB3 or a scanner that will read all modules. If the transmission is in limp in, It can cause all kinds of problem. I see that the member had clean the battery. We don't know if battery acid has eatten thru the wires (output) sensor or if the wires are broken.I am posting the possible cause's. I want everyone else to behave themselfs. Until we hear from Avery53. Now it time to throw more tools.
Symptom:
P-0500 NO VEHICLE SPEED SENSOR SIGNAL
When Monitored and Set Condition:
P-0500 NO VEHICLE SPEED SENSOR SIGNAL
When Monitored: For 3 Speed:With engine running, transmission not in park or neutral,
brakes not applied, engine rpm greater than 1500. For 4 Speed: With the engine running,
transmission not in park or neutral, brakes not applied, engine rpm greater than 1500.
Set Condition: For 3 Speed: No signal from the vehicle speed sensor for more than 11
seconds for 2 consecutive trips.For 4 Speed: No signal from the vehicle speed sensor (TCM)
is present for more than 11 seconds for 2 consecutive trips.
POSSIBLE CAUSES
ELECTRONIC AUTO TRANSAXLE TROUBLE CODES PRESENT
8-VOLT SUPPLY CIRCUIT OPEN
PCM DEF (NO VSS SIGNAL CKT)
PCM TERMINAL DEFECTIVE
VEHICLE SPEED SENSOR GROUND CIRCUIT OPEN
VEHICLE SPEED SENSOR GROUND CKT OPEN
VEHICLE SPEED SENSOR SIGNAL CIRCUIT WIRING HARNESS OBSERVABLE DEFECT
VEHICLE SPEED SENSOR SIGNAL CIRCUIT WIRING HARNESS OBSERVABLE DEFECT
PINION GEAR DEFECTIVE
OUTPUT SPEED SENSOR CIRCUIT OPEN
OUTPUT SPEED SENSOR CIRCUIT SHORTED TO GROUND
VEHICLE SPEED SENSOR SIGNAL CIRCUIT OPEN
VSS SIGNAL CIRCUIT OPEN
VSS SIGNAL CIRCUIT SHORT TO GROUND
VSS SIGNAL CIRCUIT SHORTED TO GROUND
OUTPUT SPEED SENSOR DEFECTIVE
OUTPUT SPEED SENSOR DEFECTIVE (RES > 5.0)
PCM DEFECTIVE (NO VSS SIGNAL CKT)
PCM DEFECTIVE (NO VSS SIGNAL CKT)
TCM DEFECTIVE (VSS SIG CKT)
VSS DEFECTIVE

 

Have someone rev the engine while you feel the exhaust.

Lightly tap on the muffler and catalytic converter to determine if there are loose or broken baffles in the muffler or a loose or broken element in the muffler and catalytic converter.

Here's a link for a more extensive test:
http://www.aa1car.com/library/exhaust_backpressure.htm