No Start - Page 2 - ZR-1 Net Registry Forums

chriskinzel · 08-28-2012

OK this is not fun anymore. Just pulled the plenum and all wires seem to be plugged in. I checked everything in sight under there, and all lookes OK. still no spark! What am I missing?

scottfab · 08-29-2012

Time to review what things you may have done since the last time
it ran ok.
There are still no codes set?
The starting circuits are all stock ?(no bypass of starter circuits)
Just making sure.

Have you had any of the connectors to the DIS off?
Did any of the wires get pinched when the plenum got put back in?
Without having a code set this could get difficult to isolate.
Focusing on the DIS would seem correct.
Find out if it's getting 12v.
You'll absolutely need the factory manual for this.

chriskinzel · 08-29-2012

Thanks for the ideas Scott. The car ran fine with the exception of the low coolant code (I think is was 15) befor I replaced the sensor. I did lose a lot of coolant wile replacing the sensor. No codes, no pinched wires, turns over OK but no spark. I did rinse with water os there would not be antifreeze residue in the valley. I have bypassed the VATS and the cluch safety switch. Like I said, it ran fine into the garage. I am going to try to take all electrical plugs apart and spray the with cleaner tomarrow. If that doesent work I think I will just shoot it and put one of us out of missery.

Marc Haibeck · 08-31-2012

Check the INJ1 fuse. If a fuel injector power wire gets caught under the plenum the fuse can open and then there won't be any power to the coils.

Best of luck.

Marc

scottfab · 08-31-2012

Quote:

Originally Posted by Marc Haibeck

Check the INJ1 fuse. If a fuel injector power wire gets caught under the plenum the fuse can open and then there won't be any power to the coils.

Best of luck.

Marc

Well there ya go. From the voice of experience and the author of "Been There Done That". He wrote the book, lost the book then wrote another.

Sure hope it's something fairly fixable like the fuse and not the DIS. The output drive FETs on that board are fixable but not easily found.

chriskinzel · 08-31-2012

I checked all the fuses the other day. I was hoping I shorted something out with the coolant and just needed to replace a fuse. They where all good. I am going to pull all electrical conections, blow out with air then reconnect with dielectric grease. If it still wount start it is over my head and I guess I will try to find a mechanic. Does anyone know of a good LT5 mechanic in Utah?

scottfab · 08-31-2012

Quote:

Originally Posted by chriskinzel

I checked all the fuses the other day. I was hoping I shorted something out with the coolant and just needed to replace a fuse. They where all good. I am going to pull all electrical conections, blow out with air then reconnect with dielectric grease. If it still wount start it is over my head and I guess I will try to find a mechanic. Does anyone know of a good LT5 mechanic in Utah?

Do you have a shop manual? I forget.

chriskinzel · 08-31-2012

IT'S ALIVE!! After pulling the plenum for the 3rd time i decided to put dielectric grease in all electrical connections. I thought i had gone them all, and then I found a plug that was not plugged in! it was the one that plugs in to the rear on the coils. It was just hanging there! I put a little grease on it and plugged it in. Reinstalled the plenum (I am getting good at that) and it fired right up!!!

Thanks to ALL for the sujestions. This is the best group of people ever. I hope to meet some of you in the near future

Thanks again for all the support
Chris

scottfab · 08-31-2012

Quote:

Originally Posted by chriskinzel

IT'S ALIVE!! After pulling the plenum for the 3rd time i decided to put dielectric grease in all electrical connections. I thought i had gone them all, and then I found a plug that was not plugged in! it was the one that plugs in to the rear on the coils. It was just hanging there! I put a little grease on it and plugged it in. Reinstalled the plenum (I am getting good at that) and it fired right up!!!

Thanks to ALL for the sujestions. This is the best group of people ever. I hope to meet some of you in the near future

Thanks again for all the support
Chris

Real good news and must feel great.
Good job. You don't need no stinking mechanic.
You ARE your mechanic

captcorvette · 08-31-2012

Congrats! I really like success stories. Of course encouragement and help are standard fare on this site. Really lots of good folks on this site.

08-28-2012	#11
chriskinzel Join Date: Nov 2011 Location: Salt Lake City, Utah Posts: 169	Re: No Start OK this is not fun anymore. Just pulled the plenum and all wires seem to be plugged in. I checked everything in sight under there, and all lookes OK. still no spark! What am I missing? __________________ 91 ZR-1 Red on Red #922

08-29-2012	#12
scottfab Join Date: Jan 2009 Location: Portland Oregon metro area (Washington side) Posts: 3,207	Re: No Start Time to review what things you may have done since the last time it ran ok. There are still no codes set? The starting circuits are all stock ?(no bypass of starter circuits) Just making sure. Have you had any of the connectors to the DIS off? Did any of the wires get pinched when the plenum got put back in? Without having a code set this could get difficult to isolate. Focusing on the DIS would seem correct. Find out if it's getting 12v. You'll absolutely need the factory manual for this. __________________ Scott Vett owner since 1979._It's about the car and the people

08-29-2012	#13
chriskinzel Join Date: Nov 2011 Location: Salt Lake City, Utah Posts: 169	Re: No Start Thanks for the ideas Scott. The car ran fine with the exception of the low coolant code (I think is was 15) befor I replaced the sensor. I did lose a lot of coolant wile replacing the sensor. No codes, no pinched wires, turns over OK but no spark. I did rinse with water os there would not be antifreeze residue in the valley. I have bypassed the VATS and the cluch safety switch. Like I said, it ran fine into the garage. I am going to try to take all electrical plugs apart and spray the with cleaner tomarrow. If that doesent work I think I will just shoot it and put one of us out of missery. __________________ 91 ZR-1 Red on Red #922

08-31-2012	#14
Marc Haibeck Join Date: May 2007 Location: Addison IL Posts: 250	Re: No Start Check the INJ1 fuse. If a fuel injector power wire gets caught under the plenum the fuse can open and then there won't be any power to the coils. Best of luck. Marc

08-31-2012	#16
chriskinzel Join Date: Nov 2011 Location: Salt Lake City, Utah Posts: 169	Re: No Start I checked all the fuses the other day. I was hoping I shorted something out with the coolant and just needed to replace a fuse. They where all good. I am going to pull all electrical conections, blow out with air then reconnect with dielectric grease. If it still wount start it is over my head and I guess I will try to find a mechanic. Does anyone know of a good LT5 mechanic in Utah? __________________ 91 ZR-1 Red on Red #922

08-31-2012	#18
chriskinzel Join Date: Nov 2011 Location: Salt Lake City, Utah Posts: 169	Re: No Start IT'S ALIVE!! After pulling the plenum for the 3rd time i decided to put dielectric grease in all electrical connections. I thought i had gone them all, and then I found a plug that was not plugged in! it was the one that plugs in to the rear on the coils. It was just hanging there! I put a little grease on it and plugged it in. Reinstalled the plenum (I am getting good at that) and it fired right up!!! Thanks to ALL for the sujestions. This is the best group of people ever. I hope to meet some of you in the near future Thanks again for all the support Chris __________________ 91 ZR-1 Red on Red #922

08-31-2012	#20
captcorvette Join Date: Jan 2011 Location: Dubai, United Arab Emirates Posts: 449	Re: No Start Congrats! I really like success stories. Of course encouragement and help are standard fare on this site. Really lots of good folks on this site.