I just did the chipset install. From Porken. Did the FPR and have got a rebuilt MAF, which had been working before install.

When I first tried to start, just turned over, no engine pop, tach was not moving..


Fearing the worst I contacted Ken and was told to reinsert and double check everything which I did. Everything seemed okay? When I tried to start the second time, (by the way, the second install took about 10 minutes!) when I put the key to the second position the tach buried. Turning key to start position, the tach jumping all over, it did belch and pop a few times... I am getting spark and some gas.

I am wondering if during the FPR install some gas dripped down on the Crank position sensor connector. It's directly under the fuel line that I had disconnected and although I had a towel there some fuel may have gotten in to that connector.

I did that yesterday though and I would think any fuel would have evaporated off by now!

Before I get way down there to unplug is there any other thoughts on what could be going on? That sensor is brand new and appears to be well snugged. In it's proper holder by the way, hate to try and disconnect. My damn hands are too big!

jchiodi

 

It may take a bit to get the gas back into the fuel lines and into the injectors. Are you SURE you put the correct chips in the correct brain - LH & EZK ? Make sure the vacuum elbow is plugged back into the top of the EZK brain. Check to see if the other end of the EZK vacuum line (under the hood - passenger side) hasnt come out of the vac line.

Call when you have a moment!

 

Not my experience but many have incorrectly replaced FPR.

 

Try the basics first.

Charge the battery.

Pull fuel pump fuse (#42, blue) and crank with pedal to floor for 10 secs or so.

 

Ken, Are you thinking it may be flooded?

Joel

 

Had a similar problem. I bought a used FPR from 928Intl during their 1/2 off sale and it was bad. Fuel gushed out of the hole the MAF seats in and I freaked. Sopped up the gas with a towel and wrung it out a few times (ugh). 928Intl jumped on it and a good new '87 FPR was there in 2 days. It took a bit of cranking and rough running before the flooding was worked through. Sitting doesn't do anything. What Ken said, pull the #42 (third from the end) fuse and crank it 'till it starts and then dies. Put the fuse back in a start her up.

Then get ready to fall completely in love with your car all over again. It's like someone stuck a lit firecracker up the a$$ of my '85. Whooee!!!

 

Last time I had that problem with those same ailments, was from gas getting down on the CPS, replaced it and all was good again.

 

Make sure the chip(s) is in the right way... It's easy to get it backwards.

 

I know I have the chips in right and they have been pressed in until firmly seated.

I will first pull the fuse and try to clear. If that doesn't work I will pull CPS and it's connector and clean, it is brand new, replaced two weeks ago

Battery has been charging overnight. I did have a flooded engine before and it was a bitch to clear.

Thanks for the advice all. Joel I may be able to call you while you're on the road. After about 10am I'll be pretty busy, but also on the road.

 

Two things. The FPR is new. Can it be reversed? Looked like it works both ways. My old one had part no. on the top. This one had part no. on the side. Couldn't tell which way it was supposed to orient.

jc

 

I don't think the FPR can be reversed.

If it tried to fire I don't think it's the CPS, but I could be wrong.

I know it won't run well with the stock chips but it should at least run. Maybe try putting the stock ones back in and see if it runs and if so, then your new chips may be toast. Ken, can you confirm that it should at least start and run with stock chips and '87 FPR?

I have it from a very reliable source that if you try cranking with the chips installed backward you will wipe them. Then reinstalling correctly will not help until you get a new chip from Ken.

So I'd go with:
1. try pulling fuse 42 and cranking with healthy battery
2. if no change, try swapping back to stock chips and cranking
3. if no change, go back to completely stock config and try it. I know it's a PITA but you want to isolate the things that changed before thinking that something else was broken in the process.

 

The chips were never reversed.

I pulled the connector for CPS,PITA, cleaned it with Electrical contact cleaner.
Could not get to the sensor end that easily, so I left that alone. Might try again now that it's getting light and I can see a little better.

I had also cleaned the plug to ecu's and reconnected.

I removed the 42# fuse, tried cranking- no popping. when i put the fuse back in it started popping, trying to start. Then after a few tries at this it stopped trying to start. Just cranking away, nothing. During all this, the tach is still acting pretty crazy, buries when I turn key to run position, jumping all over when the car is cranking.

I will give this another try,pulling fuse, ect. then see if putting old chips in has any effect.
jc

 

It sounds like you're flooding the car. When you try to start it, Keep the pedal mashed down all the way as to get enough air in to compensate for the excess fuel. Do it outside... big black smoke will come out the tail pipe.

If that still doesn't work, I would swap the old chips back in and see if you can get it to run again. I've seen it before where a chip goes bad.

 

I swapped chips to stock. Still no start, no pop, tach stopped acting crazy, now it just sits there not moving.... I should see some movement when cranking..?
I will try to pull the sensor end of CPS and wipe off. see what happens.

jc

 

Well can't get to that CPS, got the allen bolt off and swiveled it around a little, but can't pull it out. until I change out FPR again to old one. Then I will be back to how it was before.

Damn, gonna drop 10 degrees tomorrow and I had the thing outside enjoying the last few days of 45+ weather. Gotta clean garage, move Harley over, and push inside. &%$%$%&#!