This is topic car jerking after blower install in forum Tech Talk at Northern California Ford Owners  .


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Posted by javier (Member # 547) on :
 
i have had my blower on my car for a while and lately it has been jerking when im driving at like 15-25 mph. has anyone had any problems like this that might now what is going on...


thanx...
 

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Posted by 9lbpony (Member # 3510) on :
 
No mechanical or tuning changes? Sounds like the car is bucking which is usually an issue with timing or fuel delivery. I know a lot of cars buck when they first change injectors until they get the slopes / breakpoint / offsets dialed in correctly.

Perhaps a MAP or MAF sensor is giving bad data and throwing off load calculation? How is your voltage looking at those low speeds? Does it jerk at those speeds in any gear or only higher gears?
 

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Posted by 2stangs69-91 (Member # 1951) on :
 
check your bypass valve make sure it is working. If you don't have one you may need to get one.
 

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Posted by javier (Member # 547) on :
 
their has been no changes to anything after the car wasa tuned when i got the blower installed..

2stangs69-91 .

i was wondering the same thing.. i have a by-pass valve but a lot of people have been telling me tha does Bosh plastic ones like to fail alot.. but i havent tested it to see if it works..

whats a good by-pass valve other then that Plastic Bosh by-pass valve
 

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Posted by 2stangs69-91 (Member # 1951) on :
 
I run the plastic Bosch but I upgraded to the 110 which uses brass discs instead of the plastic one on the inside. The bosch one that comes with the kit is a 102 or 103 I beleave
 

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