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Re: 93 TY running issue - timing ? Well that is news to me , I will go check that right now THX DaveP If no luck I know I can at least pull the O2 sensor tomorrow.

Re: 93 TY running issue - timing ? I'm pretty sure , personally I only saw 1 line. It was dead on 0 when I put the light on it. At idle it seems to be running pretty normal - does not smell rich at all As soon as the truck sees any positive boost is when it starts to cut out , and no code...

Re: 93 TY running issue - timing ? I tried this as well with no luck. I tried hitting the switch I found every way in every combination I could think of. key on , off , started... holding them down ect.. spent about an hour test driving this with no luck. At this point I am not sure if the...

Re: 93 TY running issue - timing ? Plugs are ACDelco R43TS I traced all the plug wires and they are in the correct firing order I rechecked the codes after disconnecting the battery today and did idle relearn - drove it probably 60 miles today as well - no more code 42 MAP sensor has been...

Re: 93 TY running issue - timing ? I do not have permission to post them....

Re: 93 TY running issue - timing ? I can't seem to figure out how to post pictures on this site - I been working away on this thing ever since I got home.

Re: 93 TY running issue - timing ? I'll check those map sensor codes too.Thx static n .#2960

Re: 93 TY running issue - timing ? I will check the prom when I get home. I could throw the old distributor in there n see what happens. The one in there now is suppose to be brand new n just replaced right before I bought it. How do I check to see if its a 2 or 3 bar map sensor ?

Re: 93 TY running issue - timing ? The msd box isn't hooked up. It has a 6al box mounted with all the wiring , but it is not hooked up. One of the little things leading me to believe I acquired someone else's headache.

Re: 93 TY running issue - timing ? I wasn't so lucky , switch didn't fix issue. Tried both buttons ,several times. Disconnected the battery , no luck with that either. The truck will rev to 4000 rpm in park , then does the same thing. I'm going to pull the ecm tonight when I get home n see...

Re: 93 TY running issue - timing ? There actually is a switch undee the console the the PO had no idea was there that I noticed when cleaning the truck. I'm gonna be that is it. I might have pushed the button when I was cleaning. Hopefully that's the issue. after reading about valet mode last...

Re: 93 TY running issue - timing ? How would I disable this , I am leaning towards this is what is going on now.

Re: 93 TY running issue - timing ? Ain't that the truth , I'm not in a position right now to throw parts at a truck . And I will try everything possible before I take one of my vehicles anywhere to pay someone else to work on them ( unless its something like diagnosing electrical stuff , Im...

Re: 93 TY running issue - timing ? I will check to see about the cat. con. If that is it I can just replace it with pipe no big deal. Im pretty sure its not going to be a stock chip , but I will pull the ecm out tomorrow and take a look. Truck has upgraded turbo and injection. The PO had put...

Re: 93 TY running issue - timing ? Error code 4 2 was stored

Re: 93 TY running issue - timing ? I know it has a aftermarket chip , but I have no idea which one. The previous owner is sending me a folder with all of the receits for all the parts, but I do not have it yet.

Re: 93 TY running issue - timing ? I haven't jumped the ports , but I am not getting a check engine light , I will go try that here in a second to see if there are any stored. Trans fluid is full, color is ok, and doesn't smell burned. Trans shifts out fine , has all the gears and tcc lockup...

Re: 93 TY running issue - timing ? http://www.youtube.com/watch?v=ZS5-GTOXD3s&feature=youtu.be The first minute I was leaving my neighborhood , you can see it runs good and pulls pretty hard right til it hits the 3000 rpm area. @ 50 seconds in you can see the first time it does it , then I...

Re: 93 TY running issue - timing ? Also, thanks for looking for me , I appreciate that. :tup:

Re: 93 TY running issue - timing ? I know what ya mean. This is one of them things about buying a used vehicle , have to find out what someone else did or didn't do to it. It has a brand new dizzy in it. plugs are good , all wires look fine. I have personally checked all the vacuum lines I...