Problems with truck taking forever to start...

[adaml23]

Ok, I'm new to this forum and have a problem with my ram.

It's a 1995 ext cab short bed 2wd 1500 w/5.2 Magnum.

This truck has been sitting for a few years and I finally found time to mess with it this year and got it going, but I have been having one main issue. For the last ~6 months, when trying to start the truck, I have to let it sit for a little bit before being able to start it. It will turn over, but will NOT start up until you wait for a while then you can hear the ASD relay click a bunch under the hood in the relay box and the Check Engine flicker and eventually come on solid. When it does this, you can then hear the fuel pump prime and then you can start the truck normally and won't have any problems driving after until shutting the truck off again. The longer it's off, the longer it takes before the ASD relay kicks on. Today it took ~25 minutes of leaving the ignition in the ON position before it would start... (yes; I'm patient)

I've tested the ASD relay and it is good. Even switched it out for another one my FIL had and it still did the same thing. From what I've gathered/researched, I think I have a ECU that's going out. But since it's a OBD-1 vehicle, I can check any codes. Has anyone else had this issue or have any insight? I don't mind going and pulling a ECU from a local yard but don't want to without knowing what the issue is for sure. Apparently the 1994-95 computers are the same.

Any help is GREATLY appriciated!

 

[dapepper9]

ASD relay was a good start. I think you may be right about pcm going. If it was fuel pump or regulator i would think it wouldn't be holding pressure still 25 minutes later. I would start with pulling one from a yard like you mentioned. If it works maybe start saving up for a new reman

 

[crash_eco]

checking OBD 1 on a dodge

ON-BOARD DIAGNOSTICS Dodge OBD1 Pre 96

1. Cycle the ignition key ON-OFF-ON-OFF-ON within 5 seconds. To cycle the ignition key ON means to turn it only as far as it takes to get the radio to come on. It does not mean to turn the engine on.

2. Count the number of times the "check engine" lamp on the instrument panel flashes on and off. The number of flashes represents the code. There is a slight pause between the flashes representing the first and second digits of the code. Longer pauses separate individual codes. For example, flash-flash-flash [pause] flash-flash represents the code 32.

A code of "55" represents end of error codes. If this is all you get then no error codes are stored in the computer. This is the normal condition

CODE Description of Trouble Code
11 Timing belt skipped 1 tooth or more from initial learned value, Intermittent loss of either camshaft or crankshaft position sensor, No crank reference signal detected during engine cranking
12 Direct battery input to PCM was disconnected within the last 50 key-on cycles (normal)
13 No change in MAP from start to run
14 MAP sensor voltage too low
15 No vehicle speed sensor signal
17 Closed loop temp not reached or engine cold too long
21 02s sensor problem (oxygen sensor), upstream or down stream
22 Engine coolant temp sensor out of range
23 Intake air temp sensor out of range
24 Throttle Position sensor out of range
25 Idle air control motor circuits, target idle not reached (+/- 200),vacuum leak found
27 Injector control circuit
31 Evap purge flow monitor failure or evap solenoid circuit
32 EGR system failure
33 A/C clutch relay circuit
34 Speed control Solenoid circuits
35 Rad Fan control relay circuit
37 Torque converter clutch solenoid CKT or park/neutral switch failure
41 Generator field not switching properly
42 Fuel pump relay control ckt, Auto shutdown relay control ckt, No ASD relay output voltage at PCM, Fuel level sending unit volts out of range, Fuel level unit No change over miles
43 Multiple/ single cylinder misfire
44 Battery temp sensor volts out of range
46 Charging system voltage too low
51 Fuel system lean
52 Fuel system rich
53 Internal control failure
54 No Cam signal at PCM
55 End of error messages (If you get this only, no errors were found)
62 PCM failure SRI mile not stored
63 PCM Failure EEPROM write denied
64 Catalytic Converter Efficiency Failure
65 Power steering switch failure