Codes.

[rhipsher]

Im very happy with the work the body shop did but I noticed the car was running kinda rough when pulling out of the body shop. And almost didnt run at all when starting it up to leave work. So natually I pulled the codes when I got home. H32 34 36 38 74. I suspect all the codes in the 30's are banks. Just don't have an SFM to confirm it.

[1990 quasar blue]

Any chance they blew off the map sensor hose?

[rhipsher]

Nope that's the first thing I checked.

[xlr8nflorida]

Code 36 indicates a direct ignition system circuit fault.

[GOLDCYLON]

ZR1 ECM CODES 1990 TO 1992:

Code #12: Normal No Codes.
Code #13: Left Oxygen Sensor Circuit.
Code #14: Coolant Temperature Sensor Circuit High.
Code #15: Coolant Temperature Sensor Circuit Low.
Code #16: Direct Ignition System (DIS) Fault Line Circuit
Code #21: Throttle Position Sensor Circuit High.
Code #22: Throttle Position Sensor Circuit Low.
Code #23: Manifold Air Temperature Sensor Circuit Low.
Code #24: Vehicle Speed Sensor Circuit.
Code #25: Manifold Air Temperature Sensor Circuit High.
Code #31: Camshaft Sensor Circuit.
Code #33: Manifold Absolute Pressure Sensor Circuit High - Low Vacuum.
Code #34: Manifold Absolute Pressure Sensor Circuit Low - High Vacuum.
Code #36: Direct Ignition System (DIS) Circuit (missing or extra EST signal)
Code #41: Cylinder Select Error (Faulty or Incorrect Mem-Cal)
Code #42: Electronic Spark Timing (EST) Circuit.
Code# 43: Electronic Spark Control (ESC) Circuit.
Code #44: Left Oxygen Sensor Circuit Lean.
Code #45: Left Oxygen Sensor Circuit Rich.
Code #46: Vehicle Anti-Theft System (VATS)(PASS-Key) Circuit.
Code #51: Mem-Cal Error.
Code #52: Engine Oil Temperature Sensor Circuit Low.
Code #53: System Voltage.
Code #54: Fuel Pump Circuit (Low Voltage)
Code #55: System Voltage
Code #56: Vacuum Sensor Circuit.
Code #61: Secondary Port Throttle Valve System.
Code #62: Engine Oil Temperature Sensor Circuit High.
Code #63: Right Oxygen Sensor Circuit Open.
Code #64: Right Oxygen Sensor Circuit Lean.
Code #65: Right Oxygen Sensor Circuit Rich


ECM

31 LCD Data Circuit-Circuit shorted to battery voltage or CCM driver open
33 Data Clock Circuit-Circuit shorted to battery voltage or CCM driver open
35 Data Strobe Circuit-Circuit shorted to battery voltage or CCM driver open
37 M Clock Circuit-Circuit shorted to battery voltage or CCM driver open
72 LCD Dimming Open Circuit-Circuit open or shorted to ground (radio & Climate control)
H History code. May be intermittant.
Code 31, 33, 35 related to the circuit from the CCM to the Instrument panel LCD.
CCM 74 is also a lighting circuit problem.
CCM 41 is loss of communication with the ECM.

[rhipsher]

As soon as this happened the first thing that came to mind was that I have been having a coolant leak thats been draining out the valley drain tube on to the floor. When I put the top end back together a year ago I noticed the drivers side injector housing to head gasket had a cut on it all the way through one side. But I figured if I put some 518 on it and torqued it down it would be ok. But if its leaking a little coolant into that cylinder than that could cause this to. I'll pull the spark plugs on that side and take a llok at them. I've got no choice. I have to pull the top end off to see where this leak is coming from and just fix it. And this may have nothing to do with the way its running. It may just be coincedence that after I got it back from the body shop my radio is dead and all these codes popped up and the car runs the same way as they do when the map sensor is unpluged but not near as bad as when the map sensors unpluged.

[USAFPILOT]

could it have dropped a coil pack? Maybe a plug wire is loose? Dont forget to check the easy things first.

[ittlfly]

Radio dead too? Sounds like a bad fuse or ground. If you ahve a FSM you might check to see what else is on that circuit....or a common fuse/ground.

[rhipsher]

About 6 months ago my dash display with the tac/speedo light would get bright then really dim and sometimes the radio would pop and crack but not often. I always check the easy stuff first. But for this to just happen all of a sudden. But a coil pack can go out all of a sudden. And so can an injector so we will see.

[Demps]

Free to check---> I would check that all grounds are tight.
Ted

[rhipsher]

I guess its just my turn to fix something. I had a good run for a couple of years. I'll figure it out and hopefully it doesnt take to long. Great weather is on the way.

[sammy]

i am just wondering if when they did the repair that they may not have got a ground back on tight . or if they might have knicked one of the rubber hoses that go to the fuel tank. or knicked one of the wires going to the fuel tank. i am not saying they guys dont do awsome work because it looks like they do. but sometimes funky things like this can happen . am i correst in that the car was running fine went she went into the shop? she does look very nice rick .just thought to share with ya , that you might ck stuff around the repair

[gbrtng]

Multiple error codes sounds like a bad ECM to me. Swap in a known good one to isolate the problem.

[rhipsher]

i am just wondering if when they did the repair that they may not have got a ground back on tight . or if they might have knicked one of the rubber hoses that go to the fuel tank. or knicked one of the wires going to the fuel tank. i am not saying they guys dont do awsome work because it looks like they do. but sometimes funky things like this can happen . am i correst in that the car was running fine went she went into the shop? she does look very nice rick .just thought to share with ya , that you might ck stuff around the repairI tend to fully agree with you about that. Because it ran awesome before I dropped it off. It never Idled so bad that it just about died before. Once I get rolling you don't notice it. But when you take off from a stand still and engage the clutch if sputters until you get rolling. Of course the secondaries are disabled because of all the codes and ses light. I'll check around the repair area. Maybe something got pinched or a wire cut. Checking the repair area makes the most sense.

[sammy]

i notice that you had a mat temp too low code .that can be set if one of the connections has been breached . i know yours is relocated . someone may have caught a wire while working on the car . that code alone will disable the secondaries .dont ask how i know this

[sammy]

did you tell the body shop about what the car is doing????????

[rhipsher]

No! Its kind of hard to tell them they f#cked my car up right after I told them how great of a job they did on it. I wont have time to look at it until this weekend. And if I can't pinpoint the problem on saturday then I'll just cart it off to Coreys and let him deal with it. I just don't have time like I used to work on it anymore. Things are picking up at the machine shop. I run the place while the owners out meeting with customers. Im the first one there and the last one to leave. As soon as I hit the front door its kaos. I don't have time to even sit down and get on the computer anymore. Sorry Carter I missed your call. I'll call you this weekend buddy.

[sammy]

rick i know it can be hard to tell them that but you should really do it . as they may know right where to look .it is their fault that the car is doing this as it was running fine when you brought it in to them .

[rhipsher]

Oh I'll tell them. But what would be back around the bumper and drivers side 1/4 panel that would cause this besides fuel lines and the automatic antenna and rear lights? There's no reason for them to have popped the hood for anything.

[sammy]

you just dont know till you ask them , just approach them very nicely and ask . they had to open the hood to disconnect the battery . i would ck the fuel lines and there are the 2 rubber lines the connect to the fuel pumps that are on the outside of the tank . maybe one of them has a little split in it causing you to suck a little air. they are 20+yrs old . you could start the car get a spra bottle with soapy water and spray the lines. if she blows bubbles shes got a leak .either tha or the worm clamps my not be tight . i doesnt take much to mess up a fuel system that operates at around 50lbs. my best guess is that your problem is at the fuel tank rubber hoses or maybe a intermittin ground issue .but its only my best guess that and 50 gets ya a cup of coffee.just tryin to help my buddy out as best i can .:cheers: you have worked so hard on her for almost 2 years you deserve some quiet driving time without issues .jmho

[sammy]

or another thought maybe a piece of something got into the fuel line and is starting to plug the filter ????

[rhipsher]

I called them today to ask what they had to disconnect or unplug to remove the rear bumper and the 1/4 panel. He said they would have unpluged the antenna and the rear tail lights. He said he hopes its nothing they did but to let him know. Another thought would be the fuel pump ground wires.

[rhipsher]

I think I've found the problem. I checked battery connections and the negative battery cable was not tight. I could turn it with my finger. Tightened it up and the car fired up and idled perfect. Im a little low on engine coolant and need to do an oil change. After that I'll take it for a spin and check for codes then I'll know for sure. But no see light on start up like before. My gut tells me that was it.

[rhipsher]

Looks like I spoke a little to soon. Just fired it up again and it ran rough like before.

[sammy]

you could be on to something with the fuel pump ground. do you have a gauge you can hook up ?

[rhipsher]

No I don't. I crawled up under there to take a look but its hard to see up in there. There's wires running everywhere behind the bumper. Id almost have to remove the gas tank to see everything. My gas tank is empty right now with reserve on and only one bar showing. So now would be the time to remove it. Plus my spare tire and assembly is removed already. Besides where do the fuel pumps ground to?

[sammy]

i will look in my fsm when i get home this afternoon ,maybe give me a call around 6pm my time on my way home from reno right now .

[gbrtng]

If they did any welding and did not disconnect the negative battery cable, my theory about a frazzled ECM is still a good bet. Even some static electricity from sanding and painting could have zapped it.
JMHO ...

[GOLDCYLON]

Man this sucks I hate electrical BS. Are you getting any flickering in the IP while running RHIP?

[rhipsher]

I fixed it. There's always a lesson to be learned in these situations and this one was to take your time and don't take quick glances over areas your looking at. I had quickly glanced at the map hose for a split second in dim light and moved on to the rear of the car. Then I popped the hood to look everything over one more time. As I hovered over where the map sensor was I smelled gas. I grabbed a little flashlight and saw that the map hose was unplugged. End of problem. Im kinda embarrassed about that because that's the first place I looked in very dim light and thought I saw it plugged in but it wasn't. And my radio even works now. Weird.

[GOLDCYLON]

I fixed it. There's always a lesson to be learned in these situations and this one was to take your time and don't take quick glances over areas your looking at. I had quickly glanced at the map hose for a split second in dim light and moved on to the rear of the car. Then I popped the hood to look everything over one more time. As I hovered over where the map sensor was I smelled gas. I grabbed a little flashlight and saw that the map hose was unplugged. End of problem. Im kinda embarrassed about that because that's the first place I looked in very dim light and thought I saw it plugged in but it wasn't. And my radio even works now. Weird.


At least it was something easy!!!! ;)

[rhipsher]

At least it was something easy!!!! ;) Thank god for that. I knew it had to be something simple. My car doesn't give me many mystery problems like some that I've read about. Although the bent clutch fork threw me for a loop. And it took three transmission pulls to figure it out. But other than that its probably the most reliable car I have. Definitely the fastest. And now the prettiest;)

[sammy]

great rick glad you found it . i haad been looking over my electric manual trying to find what it could be until you called ,when you didnt i got and the forum and saw this yeah !!!!!!!!!!!!! you got it

[1990 quasar blue]

Congrats man. I've had my girlfriend, two friends, and an inspection guy all do it to me as well. Oh yeah, I've done it to me a few times too.