No Love!

sly dvl

Ya, it's got a Turbo
Re: No Love!

Gain access to your ECM - run the vehicle while tapping the ECM with the handle of a screwdriver or something of the likes. If it won't run then try cranking while tapping. If it fires (or dies) then you've confirmed it; you need an ECM.
 

killerrudy

New member
Re: No Love!

Well, I put in the new MAP sensor yesterday and she fired right up. Drove around for about 30 minutes and then same exact cut out as before. tried to start it 3 or 4 times with the same cough, cough, stubble, stumble. Then sat there mad for about 15 minutes and tried it one last time and she started right up and I drove her 20 minutes all the way home! So I will try the ECM Tap test today when I get home. Someone also said that the knock sensor could be bad. Would that make it do what I described?
 

sly dvl

Ya, it's got a Turbo
Re: No Love!

killerrudy said:
Someone also said that the knock sensor could be bad. Would that make it do what I described?
Nope

"Guessing" can become an expensive & frustrating game my friend...
 

killerrudy

New member
Re: No Love!

I don't mind guessing if it can possibly fix the problem. But when I get a MAP sensor code, put in a new MAP it starts(when it wouldn't before) and drives fine, and then dies just like before, that is frustrating!
 

El_Jeffe

New member
Re: No Love!

killerrudy said:
Since it was kinda nice enough to go for a bike ride today inbetween the rain showers. I took off for the afternoon. Came back, turn the key and she fired right up. Rev'ed it twice and let ldle for about 30 seconds and then she died. She shut off like I turned the key. Smooth, no shuttering or choking. Smoothly. Then she went back to not wanting to start. So definitly not enough time for the pump to get warm. Never missed onces. So figured not spark. So unless the pump is just being sparatic as heLL, I hate my life! Just kidding! Just hate it when things are not consistent!

Sound like the fuel pump is going/gone bad. I had a similar issue with my Z28. I would let it sit over night and it would start up the next morning for bit, then die out. Replaced the fuel pump and all was good after that. Good luck.
 

killerrudy

New member
Re: No Love!

Update 17! Pulled of the bed and put in the new fuel pump! Started right up, but then 1/2 a mile down the road it died once again (same way as before, stumbles and dies) Took about 30 minutes before it woud start back up to drive her home. So the only thing left with the fuel system is the fuel relay and injectors. I am so frustrated. Any more suggestions?
 

killerrudy

New member
Re: No Love!

I am trying to take your guys advice. I swear! So I just put a new FPR on the truck and she started up no problem. Let her just sit and idle to see if anything went wrong. About 2 minutes later she just turned off with a check engine light on. (pump ran for 2 seconds after it turned off). Run a scan tool and it give a code 43. I haven't researched it yet, but I know it means knock sensor. I have a new one, but could that make it do what I have explained? I wouldn't think so, but I guess that it is possible? I am not forgetting about checkin the FP, I will do that. I just am relying on the codes that my truck is spitting out right now.
 

JSM

Active member
Re: No Love!

knock sensor won't cause it to just not run. Throw a code yes, not run no.

When it won't start, do you have spark? Fuel pressure, how muc? are the injectors firing?

I am leaning toward an ecm, but verify a few things and you will have it fixed quickly, randomly throw parts at it, and it might take awhile.
 

killerrudy

New member
Re: No Love!

Okay for the record you guys rock! I ripped my dash apart today and did the "tap" test on the ecm. Well actually I just started my truck and punched the glove box and bam! Truck winced and wanted to die! So down to kragen I went and ordered a reman ECM. What is the little control unit that is attached to the ECM? I didn't see anything about it in my manual? Thanks everyone for your help.
 
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