You are here:

Dodge Repair/1991 Dodge Caravan

Advertisement


Question
Ok, the mechanic and I searched for the valve and could not find one. He showed me where one should be and he looked behind the manifold to. Any other suggestions? The codes that came up were #22 and #11.

Answer
Hi Chris,
As to the egr, only 3.0L engines sold in California originally had that in the '91 model year. So forget about that as the cause of your power output issue.
As to the 11 fault code, that suggests that either there is a problem inside the distributor with photo-optic detector assembly or one of the 4 wires from that assembly is flakey. The orange wire goes to pin 7, the tan/yellow to pin 44, the gray to pin 24, and the black/light blue wire goes to pin 4 of the 60-pin plug at the engine control module. So you would wand to check the continuity of those wires and if OK then replace the photo-optic detector inside the distributor as that code says the signal from the unit is not being reliably "seen" at the ecm.
As to the 22 code it says that the coolant sensor voltage seen at the ecm is outside the expected range. The black/light blue wire is a reference voltage (probably 8v) which is also found on the same color wire at the MAP sensor/throttle position sensor, etc. so verify that  the same voltage on that wire is found at those 3 sensors. The tan/black wire of the coolant temp sensor is variable depending upon the temperature, but in any case test the continuity of that wire to pin 2 of the ecm. The sensor resistance between its two pins should read around 4k ohms when cold, and drop gradually down to around 1k ohms at the normal operating temperature of the engine.
Let me know how this works out, please.
Roland

Dodge Repair

All Answers


Answers by Expert:


Ask Experts

Volunteer


Roland Finston

Expertise

Get a Free Fast answer to your repair question about a Chrysler/Dodge/Plymouth car, minivan, SUV, or truck. Problems with electronically controlled engines and transmissions as well as body wiring problems are my specialty. This free troubleshoot advice forum helps you diagnose faults, minimize repair costs or do-it-yourself.

I answer questions seven days a week and respond to you in about 30 minutes. "Maxed Out" means I am answering another question or asleep overnight so try again later.

I have do-it-yourself experience (50+ years) and a library of 100 1982-2012 Chrysler factory shop manuals and 20 multi-manual Chrysler Corp. CD's.

I was voted "Top expert" from 2010-2015 here at AllExperts, and have answered 20,000+ questions.

Experience

Five decades as a 'do-it-yourselfer' on domestic and imported cars

Organizations
Yahoo Autos Group called The Chrysler Lebaron Club (co-moderator)

Education/Credentials
Degrees in Physics/bruised knuckles.

Awards and Honors
"Top expert" of 2010, 2011, 2012, 2013, 2014, and 2015 here at Allexperts. Quickest "average response time" at Allexperts (currently no. 1).

©2016 About.com. All rights reserved.